JP2009090276A - System for filtering raw water for drinking water - Google Patents

System for filtering raw water for drinking water Download PDF

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JP2009090276A
JP2009090276A JP2008219057A JP2008219057A JP2009090276A JP 2009090276 A JP2009090276 A JP 2009090276A JP 2008219057 A JP2008219057 A JP 2008219057A JP 2008219057 A JP2008219057 A JP 2008219057A JP 2009090276 A JP2009090276 A JP 2009090276A
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hollow fiber
filtration
fiber membrane
activated carbon
membrane
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JP5037457B2 (en
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Tatsuo Mongaki
龍男 捫垣
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Asahi Kasei Chemicals Corp
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<P>PROBLEM TO BE SOLVED: To provide a system for filtering raw water for drinking water capable of effectively removing an organic material such as a musty smell substance in the raw water for the drinking water, requiring no washing pump nor a back wash tank for washing a suspended matter etc. adhering to a filter medium. <P>SOLUTION: The system comprises an ozone generator 4 for oxidizing and decomposing the organic material such as the musty smell substance in the raw water for the drinking water, an activated carbon tank 6 for adsorbing the organic material such as the musty smell substance oxidized and decomposed by the ozone, and hollow fiber filtering apparatuses 20 and 7 for filtering the raw water for the drinking water installed at the upstream side of the ozone generator 4 and at the downstream side of the active carbon tank 6. Each of the hollow fiber filtering apparatuses 20, 7 contains a pair of hollow fiber filtering modules capable of back washing each other via operating on-off valves. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、飲料用原水がカビ臭物質等の有機物を含むために実質的に直接飲用できず、一旦、煮沸等を行ってから飲料用に供される地域に好適に利用可能な飲料用水濾過システムに関するものである。   In the present invention, since the raw water for beverage contains organic matter such as mold odor substance, it cannot be drunk directly, and the water filtration for beverage that can be used suitably for the area where it is used for beverage after boiling etc. It is about the system.

従来の飲料用水濾過システムとしては、砂濾過、活性炭、軟化器(イオン交換樹脂)等を利用してNF(ナノフィルター)またはRO(逆浸透膜)により構成される。例えば、特開2006−035004号公報(特許文献1)には、飲料水を砂濾過、活性炭、精密濾過膜、限外濾過膜を用いて得る方法が示されている。   A conventional water filtration system for beverages is composed of NF (nanofilter) or RO (reverse osmosis membrane) using sand filtration, activated carbon, softener (ion exchange resin) or the like. For example, Japanese Patent Laid-Open No. 2006-035004 (Patent Document 1) discloses a method for obtaining drinking water using sand filtration, activated carbon, a microfiltration membrane, and an ultrafiltration membrane.

特開2006−035004号公報JP 2006-035004 A

しかしながら、前述の従来例では、飲料用原水に含まれるカビ臭物質等の有機物を効果的に除去することが出来ないという問題があった。   However, the above-described conventional example has a problem that organic substances such as mold odor substances contained in the raw drinking water cannot be effectively removed.

本発明は前記課題を解決するものであり、その目的とするところは、飲料用原水に含まれるカビ臭物質等の有機物を効果的に除去することが出来、濾過膜に附着した縣濁物質等を洗浄するための洗浄ポンプや逆洗タンクを不要とした飲料用水濾過システムを提供せんとするものである。   The present invention solves the above-mentioned problems, and the object of the present invention is to effectively remove organic substances such as mold odor substances contained in the raw water for drinking, and suspended substances attached to the filter membrane, etc. It is intended to provide a drinking water filtration system that eliminates the need for a washing pump and a backwash tank for washing food.

前記目的を達成するための本発明に係る飲料用水濾過システムの第1の構成は、飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置とを有し、前記中空糸膜濾過装置は、原水供給ヘッダ管にそれぞれ開閉バルブを介して原水供給流路が接続され、且つ濾過水排出ヘッダ管にそれぞれ濾過水排出流路が接続されると共に該濾過水排出ヘッダ管に開閉バルブが設けられ、且つ戻り原水ヘッダ管にそれぞれ開閉バルブを介して戻り原水流路が接続された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で相互逆洗可能に構成されたことを特徴とする。   In order to achieve the above object, a first configuration of a drinking water filtration system according to the present invention is an ozone that supplies ozone to drinking raw water and oxidatively decomposes organic matter such as mold odor substances contained in the drinking raw water. Supply means, activated carbon that adsorbs organic matter such as mold odor substance oxidized and decomposed by ozone supplied by the ozone supply means, and raw water for drinking on the upstream side of the ozone supply means or on the downstream side of the activated carbon. A hollow fiber membrane filtration device that permeates and filters a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less. The hollow fiber membrane filtration device supplies raw water to each of the raw water supply header pipes via an open / close valve. A flow path is connected, and a filtrate drain path is connected to each filtrate drain header pipe, and an open / close valve is provided in the filtrate drain header pipe, and a return raw water header It consists of a plurality of hollow fiber filtration membrane modules each connected to the pipe through the open / close valve and the raw water flow path, and is configured to be back-washable between the plurality of hollow fiber filtration membrane modules by opening / closing the open / close valve. It is characterized by that.

尚、ここで、分画分子量とは、中空糸膜を透過できる最大分子量をいい、口径とは中空糸膜の口径(内径直径)をいう。   Here, the molecular weight cut off means the maximum molecular weight that can permeate the hollow fiber membrane, and the diameter means the diameter (inner diameter) of the hollow fiber membrane.

また、本発明に係る飲料用水濾過システムの第2の構成は、前記第1の構成において、前記複数の中空糸濾過膜モジュール間で行う相互逆洗水にエアーを混合するエアー供給手段を有することを特徴とする。   Moreover, the 2nd structure of the water filtration system for drinks which concerns on this invention has an air supply means which mixes air with the mutual backwash water performed between the said some hollow fiber filtration membrane modules in the said 1st structure. It is characterized by.

また、本発明に係る飲料用水濾過システムの第3の構成は、飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置とを有し、前記中空糸膜濾過装置は、濾過水排出ヘッダ管にそれぞれ開閉バルブを介して濾過水排出流路が接続され、該濾過水排出ヘッダ管が吸引ポンプの吸水口に接続され、該吸引ポンプの排水口に接続された濾過水排出ヘッダ管に開閉バルブが接続され、該濾過水排出ヘッダ管の開閉バルブと前記吸引ポンプとの間から分岐した逆洗ヘッダ管にそれぞれ開閉バルブを介して逆洗流路が接続されると共に該逆洗流路が前記濾過水排出流路の開閉バルブのそれぞれの上流側で連通された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で相互逆洗可能に構成されたことを特徴とする。   Further, the third configuration of the drinking water filtration system according to the present invention is the ozone supplying means for supplying ozone to the drinking raw water and oxidizing and decomposing organic substances such as mold odor substances contained in the drinking raw water, Activated carbon adsorbing organic matter such as mold odor substance oxidatively decomposed by ozone supplied by ozone supply means, and raw water for drinking on the upstream side of the ozone supply means or downstream of the activated carbon, the average pore diameter is 0.001 μm And a hollow fiber membrane filtration device that permeates and filters through a hollow fiber membrane of 1 μm or less, and the hollow fiber membrane filtration device has a filtrate drainage flow path in each filtrate drain header pipe via an open / close valve. The filtrate drain header pipe is connected to the suction port of the suction pump, and an open / close valve is connected to the filtrate drain header pipe connected to the drain port of the suction pump. A backwashing flow path is connected to the backwashing header pipe branched from the opening / closing valve of the saddle pipe and the suction pump via the opening / closing valve, and the backwashing flow path opens and closes the filtered water discharge path. It is composed of a plurality of hollow fiber filtration membrane modules communicated on the upstream side of each of the valves, and is configured such that the plurality of hollow fiber filtration membrane modules can be backwashed with each other by opening and closing the opening / closing valve. .

また、本発明に係る飲料用水濾過システムの第4の構成は、飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置とを有し、前記中空糸膜濾過装置は、処理槽内に浸漬された中空糸膜を透過させて原液を濾過する中空糸膜濾過装置であって、更に前記中空糸膜濾過装置は、濾過液排出ヘッダ管にそれぞれ開閉バルブを介して濾過液排出流路が接続され、該濾過液排出ヘッダ管が吸引ポンプの吸液口に接続され、該吸引ポンプの排液口に接続された濾過液排出ヘッダ管に開閉バルブが接続され、該濾過液排出ヘッダ管の開閉バルブと前記吸引ポンプとの間から分岐した逆洗ヘッダ管にそれぞれ開閉バルブを介して逆洗流路が接続されると共に該逆洗流路が前記濾過液排出流路の開閉バルブのそれぞれの上流側で連通された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で相互逆洗可能に構成されたことを特徴とする。   Further, the fourth configuration of the drinking water filtration system according to the present invention is the ozone supplying means for supplying ozone to the drinking raw water and oxidizing and decomposing organic substances such as mold odor substances contained in the drinking raw water, Activated carbon adsorbing organic matter such as mold odor substance oxidatively decomposed by ozone supplied by ozone supply means, and raw water for drinking on the upstream side of the ozone supply means or downstream of the activated carbon, the average pore diameter is 0.001 μm A hollow fiber membrane filtration device that permeates and filters a hollow fiber membrane of 1 μm or less, and the hollow fiber membrane filtration device filters the undiluted solution through the hollow fiber membrane immersed in the treatment tank. A hollow fiber membrane filtration device, wherein the hollow fiber membrane filtration device is further connected to a filtrate discharge header pipe through an on-off valve, and the filtrate discharge header pipe is connected to a suction pump. An opening / closing valve is connected to the filtrate discharge header pipe connected to the liquid discharge port of the suction pump, and is branched from between the opening / closing valve of the filtrate discharge header pipe and the suction pump. A plurality of hollow fiber filtration membranes in which a backwash flow path is connected to each backwash header pipe via an open / close valve, and the backwash flow path communicates with each upstream side of the open / close valve of the filtrate discharge flow path It consists of a module, It was comprised so that mutual backwashing was possible among these hollow fiber filtration membrane modules by the opening / closing operation | movement of the said on-off valve.

また、本発明に係る飲料用水濾過システムの第5の構成は、前記第4の構成において、前記処理槽内にエアー供給手段を設け、前記複数の中空糸濾過膜モジュール間で相互逆洗する際に前記エアー供給手段によるエアーの曝気量を増加させる曝気量制御手段を有することを特徴とする。   Moreover, when the 5th structure of the water filtration system for drinks concerning this invention provides an air supply means in the said processing tank in the said 4th structure, and mutually backwashes between these hollow fiber filtration membrane modules And aeration amount control means for increasing the aeration amount of air by the air supply means.

また、本発明に係る飲料用水濾過システムの第6の構成は、前記第5の構成において、前記曝気量制御手段は、前記処理槽内に浸漬された複数の中空糸濾過膜モジュール全体に対して前記エアー供給手段によるエアーの曝気量を増加させることを特徴とする。   Moreover, the 6th structure of the drinking water filtration system which concerns on this invention is a said 5th structure. WHEREIN: The said aeration amount control means is with respect to the whole several hollow fiber filtration membrane module immersed in the said processing tank. The aeration amount of air by the air supply means is increased.

また、本発明に係る飲料用水濾過システムの第7の構成は、前記第5の構成において、前記曝気量制御手段は、前記処理槽内に浸漬された複数の中空糸濾過膜モジュールのうち逆洗中の中空糸濾過膜モジュールに対してのみ前記エアー供給手段によるエアーの曝気量を増加させることを特徴とする。   Further, a seventh configuration of the drinking water filtration system according to the present invention is the fifth configuration, wherein the aeration amount control means is a backwashing among a plurality of hollow fiber filtration membrane modules immersed in the treatment tank. The air aeration amount by the air supply means is increased only for the hollow fiber filtration membrane module therein.

また、本発明に係る飲料用水濾過システムの第8の構成は、前記第5の構成において、前記曝気量制御手段は、前記処理槽内に浸漬された複数の中空糸濾過膜モジュールのうち、逆洗中の中空糸濾過膜モジュールと、濾過中の中空糸濾過膜モジュールとの間に形成される領域に対して前記エアー供給手段によるエアーの曝気量を増加させることを特徴とする。   The eighth configuration of the drinking water filtration system according to the present invention is the fifth configuration, wherein the aeration amount control means is the reverse of the plurality of hollow fiber filtration membrane modules immersed in the treatment tank. The aeration amount of air by the air supply means is increased with respect to a region formed between the hollow fiber filtration membrane module being washed and the hollow fiber filtration membrane module being filtered.

また、本発明に係る飲料用水濾過システムの第9の構成は、前記第4の構成において、前記処理槽内に攪拌手段を設け、前記複数の中空糸濾過膜モジュール間で相互逆洗する際に前記攪拌手段により該処理槽内の液を攪拌することを特徴とする。   Moreover, when the 9th structure of the water filtration system for drinks which concerns on this invention provides a stirring means in the said processing tank in the said 4th structure, and mutually backwashes between these hollow fiber filtration membrane modules, The liquid in the treatment tank is stirred by the stirring means.

また、本発明に係る飲料用水濾過システムの第10の構成は、飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置とを有し、前記中空糸膜濾過装置は、外装ケース内に収容された中空糸膜を透過させて原液を濾過する中空糸膜濾過装置であって、更に前記中空糸膜濾過装置は、原液供給ヘッダ管にそれぞれ開閉バルブを介して原液供給流路が接続され、且つ濾過液排出ヘッダ管にそれぞれ濾過液排出流路が接続されると共に該濾過液排出ヘッダ管に開閉バルブが設けられ、且つ戻り原液ヘッダ管にそれぞれ開閉バルブを介して戻り原液流路が接続され、且つ一方の前記戻り原液流路と他方の前記原液供給流路とがそれぞれ開閉バルブを介して接続された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で直列に接続して前記中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄が可能に構成されたことを特徴とする。   Further, the tenth configuration of the drinking water filtration system according to the present invention is the ozone supply means for supplying ozone to the drinking raw water and oxidizing and decomposing organic substances such as mold odor substances contained in the drinking raw water, Activated carbon adsorbing organic matter such as mold odor substance oxidatively decomposed by ozone supplied by ozone supply means, and raw water for drinking on the upstream side of the ozone supply means or downstream of the activated carbon, the average pore diameter is 0.001 μm And a hollow fiber membrane filtration device that permeates and filters the hollow fiber membrane of 1 μm or less, and the hollow fiber membrane filtration device filters the undiluted solution through the hollow fiber membrane accommodated in the outer case. A hollow fiber membrane filtration device, wherein the hollow fiber membrane filtration device is further connected to a raw solution supply header pipe via an open / close valve, respectively, and to a filtrate discharge header pipe. The filtrate discharge flow path is connected, and an opening / closing valve is provided in the filtrate discharge header pipe, and the return concentrate flow path is connected to the return concentrate header pipe via the opening / closing valve, respectively, and one of the return concentrates The flow path and the other stock solution supply flow path are each composed of a plurality of hollow fiber filtration membrane modules connected via open / close valves, and are connected in series between the plurality of hollow fiber filtration membrane modules by opening / closing the open / close valve. It is configured to be able to perform flushing cleaning that is connected and allows the stock solution to flow outside the hollow fiber membrane to wash the hollow fiber membrane.

また、本発明に係る飲料用水濾過システムの第11の構成は、前記第10の構成において、前記複数の中空糸濾過膜モジュール間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段を有することを特徴とする。   In addition, the eleventh configuration of the drinking water filtration system according to the present invention is the tenth configuration, further comprising air supply means for mixing air with a mutual flushing cleaning liquid performed between the plurality of hollow fiber filtration membrane modules. Features.

また、本発明に係る飲料用水濾過システムの第12の構成は、飲料用原水中に含まれるカビ臭物質等の有機物を吸着する活性炭と、前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置とが複数組並列に接続され、前記各活性炭のそれぞれの下流側と、前記各中空糸膜濾過装置のそれぞれの上流側とを一同に接続する第1の中継流路と、前記各中空糸膜濾過装置のそれぞれの下流側と、前記第1の中継流路とを一同に接続する第2の中継流路とを有し、前記各活性炭の上流側にそれぞれ設けられた第1の開閉バルブと、前記第1の中継流路上で前記第2の中継流路が接続される部位の両側にそれぞれ設けられた第2の開閉バルブと、前記各中空糸膜濾過装置の下流側と前記第2の中継流路とが接続される部位の下流側に設けられた第3の開閉バルブと、の開閉操作により該複数の活性炭と前記複数の中空糸膜濾過装置の中空糸濾過膜モジュールとの間で相互逆洗可能に構成されたことを特徴とする。   In addition, the twelfth configuration of the drinking water filtration system according to the present invention has an average pore size of 0 for activated carbon that adsorbs organic matter such as mold odor substances contained in the drinking raw water, and drinking raw water on the downstream side of the activated carbon. A plurality of hollow fiber membrane filtration devices that permeate and filter through a hollow fiber membrane of 001 μm or more and 1 μm or less are connected in parallel, and each downstream side of each activated carbon and each of the hollow fiber membrane filtration devices A first relay channel that connects the upstream side together, a second downstream channel that connects the downstream side of each hollow fiber membrane filtration device and the first relay channel together, and And a first opening / closing valve provided on the upstream side of each activated carbon, and a second opening / closing valve provided on each side of the first relay flow path to which the second relay flow path is connected. 2 on-off valves and the hollow fiber membrane filtration devices Of the plurality of activated carbons and the plurality of hollow fiber membrane filtration devices by an opening / closing operation of a third opening / closing valve provided on the downstream side of a portion where the downstream side of the device is connected to the second relay flow path It is characterized in that it can be mutually backwashed with the hollow fiber filtration membrane module.

また、本発明に係る飲料用水濾過システムの第13の構成は、飲料用原水中に含まれるカビ臭物質等の有機物を吸着する活性炭と、前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置とが複数組並列に接続され、前記各活性炭のそれぞれの下流側と、前記各中空糸膜濾過装置のそれぞれの上流側とを一同に接続する第1の中継流路と、前記各中空糸膜濾過装置のそれぞれの下流側と、前記第1の中継流路とを一同に接続する第2の中継流路とを有し、前記各活性炭の上流側に設けられた第1の三方弁と、前記第1の中継流路上で前記第2の中継流路が接続される部位に設けられた第2の三方弁と、前記各中空糸膜濾過装置の下流側と前記第2の中継流路とが接続される部位の下流側に設けられた開閉バルブと、の開閉操作及び切替操作により該複数の活性炭と前記複数の中空糸膜濾過装置の中空糸濾過膜モジュールとの間で相互逆洗可能に構成されたことを特徴とする。   In addition, the thirteenth configuration of the drinking water filtration system according to the present invention has an average pore size of 0 for the activated carbon that adsorbs organic matter such as mold odor substance contained in the drinking raw water and the drinking raw water downstream of the activated carbon. A plurality of hollow fiber membrane filtration devices that permeate and filter through a hollow fiber membrane of 001 μm or more and 1 μm or less are connected in parallel, and each downstream side of each activated carbon and each of the hollow fiber membrane filtration devices A first relay channel that connects the upstream side together, a second downstream channel that connects the downstream side of each hollow fiber membrane filtration device and the first relay channel together, and A first three-way valve provided on the upstream side of each activated carbon, and a second three-way valve provided on a portion of the first relay flow path to which the second relay flow path is connected And the downstream side of each hollow fiber membrane filtration device and the second relay channel Back and forth between the plurality of activated carbons and the hollow fiber filtration membrane modules of the plurality of hollow fiber membrane filtration devices by opening and closing operations and switching operations. It is configured to be possible.

本発明に係る飲料用水濾過システムの第1、第3、第4の構成によれば、オゾン供給手段により飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解することが出来、その酸化分解したカビ臭物質等の有機物を活性炭により吸着除去することが出来る。そして、オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を中空糸膜濾過装置に設けられた平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過することが出来る。   According to the first, third, and fourth configurations of the drinking water filtration system according to the present invention, ozone is supplied to the drinking raw water by the ozone supply means, and organic substances such as mold odor substances contained in the drinking raw water Can be oxidized and decomposed, and organic substances such as mold odor substances decomposed and oxidized can be adsorbed and removed by activated carbon. And, the raw water for drinking on the upstream side of the ozone supply means or the downstream side of the activated carbon is filtered through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less provided in the hollow fiber membrane filtration device. I can do it.

また、開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で相互逆洗可能な構成としたことで、中空糸膜に附着した縣濁物質等を洗浄するための洗浄ポンプや逆洗タンクを不要とし、濾過設備の小型化とコストダウンを図ることが出来る。   In addition, by adopting a configuration that allows backwashing between a plurality of hollow fiber filtration membrane modules by opening and closing the open / close valve, a washing pump and a backwash tank for washing suspended substances attached to the hollow fiber membrane are provided. This eliminates the need to reduce the size and cost of the filtration equipment.

また、本発明に係る飲料用水濾過システムの第2の構成によれば、エアー供給手段により複数の中空糸濾過膜モジュール間で行う相互逆洗中にエアーを供給することで、中空糸膜を揺らして洗浄効果を向上することが出来る。   Moreover, according to the 2nd structure of the drinking water filtration system which concerns on this invention, a hollow fiber membrane is shaken by supplying air during the mutual backwashing performed between several hollow fiber filtration membrane modules by an air supply means. The cleaning effect can be improved.

また、本発明に係る飲料用水濾過システムの第5の構成によれば、処理槽内に浸漬された複数の中空糸濾過膜モジュール間で相互逆洗する際に、曝気量制御手段により曝気量を増加させることで処理槽内の処理液中に上昇流を形成することが出来、これにより逆洗中の中空糸膜から剥離された縣濁物質が上昇流により処理槽の液面付近まで上昇し、濾過中の中空糸膜に付着することがない。   Moreover, according to the 5th structure of the drinking water filtration system which concerns on this invention, when carrying out mutual backwashing between the several hollow fiber filtration membrane modules immersed in the processing tank, aeration amount is controlled by the aeration amount control means. By increasing the flow rate, an upward flow can be formed in the treatment liquid in the treatment tank, whereby the suspended substances separated from the hollow fiber membrane being backwashed rise to the vicinity of the liquid level in the treatment tank. , It does not adhere to the hollow fiber membrane during filtration.

また、本発明に係る飲料用水濾過システムの第6の構成によれば、曝気量制御手段により逆洗中の中空糸膜と、濾過中の中空糸膜とに全体的に曝気量を増やして、逆洗中の中空糸濾過膜モジュールに対する洗浄効果と濾過中の中空糸濾過膜モジュールに対する縣濁物質の再付着防止効果を高めることが出来る。   Further, according to the sixth configuration of the drinking water filtration system according to the present invention, the aeration amount is increased to the hollow fiber membrane being backwashed and the hollow fiber membrane being filtered by the aeration amount control means, The effect of washing the hollow fiber filtration membrane module during backwashing and the effect of preventing re-adhesion of suspended substances to the hollow fiber filtration membrane module during filtration can be enhanced.

また、本発明に係る飲料用水濾過システムの第7の構成によれば、曝気量制御手段により逆洗中の中空糸膜に対してのみ曝気量を増やして、逆洗中の中空糸濾過膜モジュールに対しては上昇流を形成することが出来、これにより逆洗中の中空糸濾過膜モジュールから剥離された縣濁物質が該上昇流により処理槽の液面付近まで退避させられ、更には隣接する濾過中の中空糸濾過膜モジュール等に沿った下降流となり、処理槽内で旋回流を形成するので、逆洗中の中空糸濾過膜モジュールに対する洗浄効果及び濾過中の中空糸濾過膜モジュールに対する縣濁物質の再付着防止効果を効率的に高めることが出来る。   Further, according to the seventh configuration of the drinking water filtration system of the present invention, the aeration amount is increased only for the hollow fiber membrane being backwashed by the aeration amount control means, so that the hollow fiber filtration membrane module being backwashed As a result, a suspended flow separated from the hollow fiber filtration membrane module being backwashed can be retreated to the vicinity of the liquid level of the treatment tank by the upward flow, and further adjacent As a result, it becomes a downward flow along the hollow fiber filtration membrane module during filtration and forms a swirling flow in the treatment tank, so that the cleaning effect on the hollow fiber filtration membrane module during back washing and the hollow fiber filtration membrane module during filtration are The effect of preventing re-adhesion of suspended substances can be increased efficiently.

また、本発明に係る飲料用水濾過システムの第8の構成によれば、曝気量制御手段により逆洗中の中空糸膜と濾過中の中空糸膜との間に形成される領域に対して曝気量を増やして安定した旋回流を形成し、洗浄効果を効率的に高めることが出来る。   Moreover, according to the 8th structure of the drinking water filtration system which concerns on this invention, it aerates with respect to the area | region formed between the hollow fiber membrane under backwashing and the hollow fiber membrane under filtration by the aeration amount control means. The amount can be increased to form a stable swirling flow, and the cleaning effect can be enhanced efficiently.

また、本発明に係る飲料用水濾過システムの第9の構成によれば、処理槽内に浸漬された複数の中空糸濾過膜モジュール間で相互逆洗する際に、攪拌手段により該処理槽内の液を攪拌することで、逆洗中の中空糸膜から剥離された縣濁物質が攪拌流により退避させられ、濾過中の中空糸膜に付着することがない。   Moreover, according to the 9th structure of the water filtration system for drinks concerning this invention, when carrying out mutual backwashing between the some hollow fiber filtration membrane modules immersed in the processing tank, inside a processing tank by a stirring means By stirring the liquid, the suspended substance peeled off from the hollow fiber membrane being backwashed is withdrawn by the stirring flow and does not adhere to the hollow fiber membrane being filtered.

また、本発明に係る飲料用水濾過システムの第10の構成によれば、開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で直列に接続して前記中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄が可能な構成としたことでフラッシング洗浄で廃棄される原液(濃縮液)の液量を低減でき、廃液処理量も低減出来る。   Moreover, according to the 10th structure of the drinking water filtration system which concerns on this invention, it connects in series between several hollow fiber filtration membrane modules by the opening / closing operation | movement of an on-off valve, and lets undiluted | stock solution flow outside the said hollow fiber membrane. By adopting a configuration capable of flushing washing for washing the hollow fiber membrane, the amount of the stock solution (concentrated solution) discarded by flushing washing can be reduced, and the waste liquid treatment amount can also be reduced.

また、本発明に係る飲料用水濾過システムの第11の構成によれば、エアー供給手段により複数の中空糸濾過膜モジュール間で行う相互フラッシング洗浄液にエアーを混合することで、中空糸膜を揺らして洗浄効果を向上することが出来る。   Moreover, according to the 11th structure of the drinking water filtration system which concerns on this invention, a hollow fiber membrane is shaken by mixing air with the mutual flushing washing | cleaning liquid performed between several hollow fiber filtration membrane modules by an air supply means. The cleaning effect can be improved.

また、本発明に係る飲料用水濾過システムの第12、第13の構成によれば、二方弁からなる開閉バルブの開閉操作や三方弁の切替操作により複数の活性炭と複数の中空糸膜濾過装置の中空糸濾過膜モジュールとの間で相互逆洗可能な構成としたことで、活性炭や中空糸膜に附着した縣濁物質等を洗浄するための洗浄ポンプや逆洗タンクを不要とし、濾過設備の小型化とコストダウンを図ることが出来る。   Further, according to the twelfth and thirteenth configurations of the drinking water filtration system according to the present invention, a plurality of activated carbons and a plurality of hollow fiber membrane filtration devices can be opened and closed by a two-way valve and a three-way valve switching operation. By adopting a configuration that allows backwashing with the hollow fiber filtration membrane module, there is no need for a washing pump or backwash tank for washing suspended substances attached to the activated carbon or the hollow fiber membrane, and filtration equipment. Can be reduced in size and cost.

図により本発明に係る飲料用水濾過システムの一実施形態を具体的に説明する。図1は本発明に係る飲料用水濾過システムの構成を示すフローチャート、図2は中空糸膜濾過装置の開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で相互逆洗を行う様子を示し、図2(a)は外圧式、図2(b)は内圧式、図2(c)は浸漬膜の場合をそれぞれ示す図、図3は外圧式で複数の中空糸濾過膜モジュール間で行う相互逆洗中にエアーを供給するエアー供給手段を設けた構成を示す図である。   An embodiment of a drinking water filtration system according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a flowchart showing the configuration of a drinking water filtration system according to the present invention, and FIG. 2 shows a state in which mutual backwashing is performed between a plurality of hollow fiber filtration membrane modules by opening and closing an open / close valve of a hollow fiber membrane filtration device 2 (a) is an external pressure type, FIG. 2 (b) is an internal pressure type, FIG. 2 (c) is a diagram showing a case of an immersion membrane, and FIG. 3 is an external pressure type, which is performed between a plurality of hollow fiber filtration membrane modules. It is a figure which shows the structure which provided the air supply means which supplies air during backwashing.

図1において、1は水道局等から供給される飲料用原水(生活用水道水)が貯留された原水タンクであり、供給ポンプ2により第1の中空糸膜濾過装置20を介して混合器3に供給される。第1の中空糸膜濾過装置20は、詳しくは後述する第2の中空糸膜濾過装置7の中空糸膜の口径よりも大きな口径のカートリッジ式フィルターであっても良いが、該第2の中空糸膜濾過装置7と同様に平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する構成であっても良い。また、混合器3は、滞留時間が10分程度のスタティックミキサーを採用することが出来る。   In FIG. 1, reference numeral 1 denotes a raw water tank in which raw drinking water (domestic tap water) supplied from a water station or the like is stored, and a mixer 3 through a first hollow fiber membrane filtration device 20 by a supply pump 2. To be supplied. The first hollow fiber membrane filtration device 20 may be a cartridge type filter having a diameter larger than the diameter of the hollow fiber membrane of the second hollow fiber membrane filtration device 7 described in detail later. Similarly to the yarn membrane filtration device 7, a configuration may be adopted in which a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less is permeated and filtered. Moreover, the mixer 3 can employ | adopt the static mixer whose residence time is about 10 minutes.

4はオゾン供給手段となるオゾン発生器であり、混合器3に供給された飲料用原水にオゾン(O)を供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解する。5は反応タンクであり、該反応タンク5内で所定時間(例えば12分程度)滞留させることで飲料用原水にオゾンを均一に接触させることが出来る。反応タンク5は例えば内部に互い違いに設けた仕切り板により形成された反応流路を飲料用原水とオゾンとを混合しながら通過させることにより飲料用原水にオゾンを均一に接触させることが出来る。 Reference numeral 4 denotes an ozone generator serving as an ozone supply means, which supplies ozone (O 3 ) to the drinking water supplied to the mixer 3 to oxidatively decompose organic substances such as mold odor substances contained in the drinking raw water. To do. Reference numeral 5 denotes a reaction tank. By retaining the reaction tank 5 for a predetermined time (for example, about 12 minutes), ozone can be uniformly brought into contact with the raw water for drinking. The reaction tank 5 can make ozone contact with raw | natural water for drinks uniformly, for example by allowing the raw | natural water for drinks and ozone to pass through the reaction flow path formed of the partition plate provided alternately.

反応タンク5の上層部にはオゾンが溜まるため活性炭層が設けられた排オゾン処理器22により排出されるオゾンを活性炭層に吸着させて処理する。尚、混合器3と反応タンク5とを一体型で構成することも出来る。   Since ozone accumulates in the upper layer of the reaction tank 5, the ozone discharged from the exhaust ozone processor 22 provided with the activated carbon layer is adsorbed to the activated carbon layer for treatment. In addition, the mixer 3 and the reaction tank 5 can also be comprised by integral type.

6は活性炭層が設けられた活性炭槽であり、反応タンク5内でオゾンに接触してカビ臭物質等の有機物が酸化分解された飲料用原水は移送ポンプ21により活性炭槽6に送られる。そして、活性炭槽6の活性炭層を飲料用原水が通過することによりオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する。   6 is an activated carbon tank provided with an activated carbon layer, and the raw water for beverages in which organic substances such as mold odor substances are oxidized and decomposed in contact with ozone in the reaction tank 5 are sent to the activated carbon tank 6 by the transfer pump 21. And organic substances, such as a mold odor substance oxidized and decomposed | disassembled by ozone, are adsorb | sucked when the raw water for drinks passes through the activated carbon layer of the activated carbon tank 6.

次亜塩素酸ナトリウム(NaClO)逆洗器23は活性炭槽6の活性炭に発生する微生物を殺菌するものである。   The sodium hypochlorite (NaClO) backwasher 23 sterilizes microorganisms generated on the activated carbon in the activated carbon tank 6.

7は第2の中空糸膜濾過装置であり、該第2の中空糸膜濾過装置7により活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する。   Reference numeral 7 denotes a second hollow fiber membrane filtration device. The raw water for drinking from which organic substances such as mold odor substances are adsorbed and removed by activated carbon in the activated carbon tank 6 by the second hollow fiber membrane filtration device 7 has an average pore diameter of 0.001 μm. Filter through a hollow fiber membrane of 1 μm or less.

図2は第2の中空糸膜濾過装置7の各開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で相互逆洗を行う様子を示し、図2(a)は中空糸膜が外装ケース内に収容された外圧式、図2(b)は中空糸膜が外装ケース内に収容された内圧式、図2(c)は中空糸膜が処理槽内に浸漬された浸漬膜の場合の膜間相互逆洗運転の様子をそれぞれ示す。   FIG. 2 shows a state where mutual backwashing is performed between a plurality of hollow fiber filtration membrane modules by opening and closing each open / close valve of the second hollow fiber membrane filtration device 7, and FIG. FIG. 2 (b) shows an internal pressure type in which a hollow fiber membrane is contained in an outer case, and FIG. 2 (c) shows an immersion membrane in which the hollow fiber membrane is immersed in a treatment tank. The state of the intermembrane backwash operation is shown.

図2(a)に示すように外装ケース内に収容された中空糸膜の外側から飲料用原水に圧力をかけて該中空糸膜の内側に濾過水を透過させる外圧式の場合の第2の中空糸膜濾過装置7では、活性炭槽6から図示しない供給ポンプにより供給される共通の原水供給ヘッダ管8にそれぞれ開閉バルブ9a,9bを介して原水供給流路10a,10bが接続され、且つ共通の濾過水排出ヘッダ管11にそれぞれ濾過水排出流路12a,12bが接続されると共に該濾過水排出ヘッダ管11には開閉バルブ18が設けられ、且つ共通の戻り原水ヘッダ管13にそれぞれ開閉バルブ14a,14bを介して戻り原水流路15a,15bが接続された一対の中空糸濾過膜モジュール16a,16bからなり、各開閉バルブ9a,9b,14a,14b,18の開閉操作により該一対の中空糸濾過膜モジュール16a,16b間で相互逆洗可能に構成されている。   As shown in FIG. 2 (a), the second pressure in the case of the external pressure type in which filtered water is permeated inside the hollow fiber membrane by applying pressure to the raw water for drinking from the outside of the hollow fiber membrane housed in the outer case. In the hollow fiber membrane filtration device 7, the raw water supply flow paths 10a and 10b are connected to the common raw water supply header pipe 8 supplied from the activated carbon tank 6 by a supply pump (not shown) via the open / close valves 9a and 9b, respectively. The filtrate drain flow channels 12a and 12b are connected to the filtrate drain header pipe 11 respectively, and the filtrate drain header pipe 11 is provided with an open / close valve 18 and the common return raw water header pipe 13 is provided with an open / close valve. It consists of a pair of hollow fiber filtration membrane modules 16a, 16b to which the return raw water flow paths 15a, 15b are connected via 14a, 14b, and the pair of hollow fibers 9a, 9b, 14a, 14b, 18 are opened and closed by the opening / closing operation. Thread filtration membrane module It is comprised so that mutual backwashing is possible between 16a and 16b.

17は中空糸濾過膜モジュール16a,16bにより濾過された飲料用濾過水を一旦貯留するための中間タンクであり、第2の中空糸膜濾過装置7の濾過水排出ヘッダ管11から排出された飲料用濾過水が該中間タンク17に貯留される。中間タンク17内に貯留された飲料用濾過水は所定の水処理を施して直接飲用できる飲料用濾過水(飲料用水道水)として飲料用水道設備に供される。   17 is an intermediate tank for temporarily storing the filtrate for beverage filtered by the hollow fiber membrane modules 16a and 16b, and the beverage discharged from the filtrate drain header 11 of the second hollow fiber membrane filter 7 Filtration water is stored in the intermediate tank 17. Beverage filtered water stored in the intermediate tank 17 is supplied to drinking water facilities as drinking water (drinking tap water) that can be directly drunk after being subjected to a predetermined water treatment.

次に図2(a)を用いて、一対の中空糸濾過膜モジュール16a,16b間で相互逆洗する操作について説明する。先ず、濾過運転を行う場合には、開閉バルブ9a,9b及び濾過水排出ヘッダ管11の濾過水排出流路12a,12bよりも濾過水流通方向下流側(図2の右側)に設けられた開閉バルブ18を開放すると共に、開閉バルブ14a,14bを閉鎖した状態で各中空糸濾過膜モジュール16a,16bの中空糸膜の外側から内側(外圧式濾過)に活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を透過させて全濾過する。   Next, with reference to FIG. 2 (a), an operation for backwashing between the pair of hollow fiber filtration membrane modules 16a and 16b will be described. First, when performing the filtration operation, the opening / closing provided on the downstream side in the filtrate flow direction (the right side in FIG. 2) with respect to the filtrate discharge channels 12a and 12b of the filtrate discharge header pipe 11 and the on / off valves 9a and 9b. While the valve 18 is opened and the open / close valves 14a and 14b are closed, mold odor substances and the like are activated by activated carbon in the activated carbon tank 6 from outside to inside (external pressure filtration) of the hollow fiber membranes of the hollow fiber filtration membrane modules 16a and 16b. The raw water for drinking from which the organic matter is adsorbed and removed is permeated and completely filtered.

次に一対の中空糸濾過膜モジュール16a,16b間で相互逆洗運転する場合において、中空糸濾過膜モジュール16aを逆洗運転する場合には、開閉バルブ9b,14aを開放すると共に、開閉バルブ9a,14b,18を閉鎖した状態で中空糸濾過膜モジュール16bの中空糸膜の外側から内側(外圧式濾過)に活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を透過させた濾過水を中空糸濾過膜モジュール16aの濾過水排出流路12aに逆流させて中空糸膜の内側から外側に透過させ、中空糸膜に附着した縣濁物質を剥離して戻り原水流路15aから戻り原水ヘッダ管13を介して外部に排除する。   Next, in the case of mutual backwash operation between the pair of hollow fiber filtration membrane modules 16a and 16b, when the hollow fiber filtration membrane module 16a is backwashed, the on-off valves 9b and 14a are opened and the on-off valve 9a is opened. , 14b, 18 with the raw water for drinking from which organic substances such as mold odor substances are adsorbed and removed by activated carbon in the activated carbon tank 6 from outside to inside (external pressure filtration) of the hollow fiber membrane of the hollow fiber membrane module 16b. The permeated filtered water is caused to flow back to the filtered water discharge flow path 12a of the hollow fiber membrane module 16a and permeate from the inside to the outside of the hollow fiber membrane, and the suspended substances attached to the hollow fiber membrane are peeled off and returned to the raw water stream. It returns from the path 15a and is removed to the outside through the raw water header pipe 13.

同様に、中空糸濾過膜モジュール16bを逆洗運転する場合には、開閉バルブ9a,14bを開放すると共に、開閉バルブ9b,14a,18を閉鎖した状態で中空糸濾過膜モジュール16aの中空糸膜の外側から内側(外圧式濾過)に活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を透過させた濾過水を中空糸濾過膜モジュール16bの濾過水排出流路12bに逆流させて中空糸膜の内側から外側に透過させ、該中空糸膜に附着した縣濁物質を剥離して戻り原水流路15bから戻り原水ヘッダ管13を介して外部に排除する。   Similarly, when the hollow fiber filtration membrane module 16b is backwashed, the open / close valves 9a, 14b are opened and the open / close valves 9b, 14a, 18 are closed, and the hollow fiber membrane membrane 16a has a hollow fiber membrane. From the outside to the inside (external pressure filtration), the filtered water obtained by allowing the raw water for drinking from which organic substances such as mold odor substances are adsorbed and removed by the activated carbon of the activated carbon tank 6 to pass through is filtered water discharge flow path 12b of hollow fiber filtration membrane module 16b. The suspension is made to flow backward and permeate from the inside to the outside of the hollow fiber membrane, and the suspended substances attached to the hollow fiber membrane are peeled off and removed from the return raw water flow path 15b through the return raw water header pipe 13 to the outside.

尚、各中空糸濾過膜モジュール16a,16bの中空糸膜の外表面を単に洗い流すフラッシング運転を行う場合には、開閉バルブ9a,9b,14a,14bを開放すると共に、開閉バルブ18を閉鎖した状態で活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を原水供給ヘッダ管8から各原水供給流路10a,10bに供給して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側を流通させて該中空糸膜の外側表面に附着した縣濁物質を剥離して戻り原水流路15a,15bから戻り原水ヘッダ管13を介して外部に排除する。   When performing a flushing operation in which the outer surface of the hollow fiber membrane of each hollow fiber filtration membrane module 16a, 16b is simply washed, the open / close valve 9a, 9b, 14a, 14b is opened and the open / close valve 18 is closed. In the activated carbon tank 6, the raw water for drinking from which organic substances such as mold odor substances are adsorbed and removed by the activated carbon of the activated carbon tank 6 is supplied from the raw water supply header pipe 8 to the raw water supply flow paths 10a and 10b, and the hollow fiber filtration membrane modules 16a and 16b. The suspended material attached to the outer surface of the hollow fiber membrane is peeled off through the outside of the hollow fiber membrane and removed from the return raw water flow paths 15a and 15b through the return raw water header pipe 13.

図2(b)に示すように外装ケース内に収容された中空糸膜の内側から飲料用原水に圧力をかけて該中空糸膜の外側に濾過水を透過させる内圧式の場合の第2の中空糸膜濾過装置7も、図2(a)と同様に構成されて、各開閉バルブ9a,9b,14a,14b,18の開閉操作により該一対の中空糸濾過膜モジュール16a,16b間で相互逆洗可能に構成されている。   As shown in FIG. 2 (b), a second case of the internal pressure type in which filtered water is permeated to the outside of the hollow fiber membrane by applying pressure to the drinking raw water from the inside of the hollow fiber membrane housed in the outer case. The hollow fiber membrane filtration device 7 is also configured in the same manner as in FIG. 2A, and the pair of hollow fiber filtration membrane modules 16a and 16b are mutually connected by opening and closing the respective open / close valves 9a, 9b, 14a, 14b, and 18. It is configured to be backwashable.

そして、図2(b)において、濾過運転を行う場合には、開閉バルブ9a,9b及び濾過水排出ヘッダ管11の濾過水排出流路12a,12bよりも濾過水流通方向下流側(図2の右側)に設けられた開閉バルブ18を開放すると共に、開閉バルブ14a,14bを閉鎖した状態で各中空糸濾過膜モジュール16a,16bの中空糸膜の内側から外側(内圧式濾過)に活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を透過させて全濾過する。   In FIG. 2B, when the filtration operation is performed, the filtered water flow direction downstream side of the filtered water discharge flow paths 12a and 12b of the open / close valves 9a and 9b and the filtered water discharge header pipe 11 (in FIG. 2). The activated carbon tank 6 is opened from the inside to the outside (internal pressure filtration) of the hollow fiber membrane of each hollow fiber filtration membrane module 16a, 16b with the on-off valve 18 provided on the right side opened and the on-off valves 14a, 14b closed. The raw water for beverages from which organic substances such as mold odor substances are adsorbed and removed by the activated carbon is permeated and filtered.

次に図2(b)において、一対の中空糸濾過膜モジュール16a,16b間で相互逆洗運転する場合において、中空糸濾過膜モジュール16aを逆洗運転する場合には、開閉バルブ9b,14aを開放すると共に、開閉バルブ9a,14b,18を閉鎖した状態で中空糸濾過膜モジュール16bの中空糸膜の内側から外側(内圧式濾過)に活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を透過させた濾過水を中空糸濾過膜モジュール16aの濾過水排出流路12aに逆流させて中空糸膜の外側から内側に透過させ、中空糸膜に附着した縣濁物質を剥離して戻り原水流路15aから戻り原水ヘッダ管13を介して外部に排除する。   Next, in FIG. 2B, in the case where the backwash operation is performed between the pair of hollow fiber filtration membrane modules 16a and 16b, when the hollow fiber filtration membrane module 16a is backwashed, the on-off valves 9b and 14a are provided. Organic substances such as mold odor substances are adsorbed by activated carbon in the activated carbon tank 6 from the inside to the outside (internal pressure filtration) of the hollow fiber membrane of the hollow fiber filtration membrane module 16b with the open / close valves 9a, 14b, 18 closed. Suspended substances attached to the hollow fiber membrane by allowing the filtered water permeated through the removed drinking water to flow back to the filtrate discharge channel 12a of the hollow fiber membrane module 16a and permeating from the outside to the inside of the hollow fiber membrane. Are removed from the return raw water flow path 15a through the return raw water header pipe 13 to the outside.

同様に、中空糸濾過膜モジュール16bを逆洗運転する場合には、開閉バルブ9a,14bを開放すると共に、開閉バルブ9b,14a,18を閉鎖した状態で中空糸濾過膜モジュール16aの中空糸膜の内側から外側(内圧式濾過)に活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を透過させた濾過水を中空糸濾過膜モジュール16bの濾過水排出流路12bに逆流させて中空糸膜の外側から内側に透過させ、該中空糸膜に附着した縣濁物質を剥離して戻り原水流路15bから戻り原水ヘッダ管13を介して外部に排除する。   Similarly, when the hollow fiber filtration membrane module 16b is backwashed, the open / close valves 9a, 14b are opened and the open / close valves 9b, 14a, 18 are closed, and the hollow fiber membrane membrane 16a has a hollow fiber membrane. From the inner side to the outer side (internal pressure filtration), the filtered water obtained by allowing the raw water for drinking from which organic substances such as mold odor substances are adsorbed and removed by the activated carbon of the activated carbon tank 6 to pass through the filtered water discharge channel 12b of the hollow fiber filtration membrane module 16b The suspension is made to flow backward and permeate from the outside to the inside of the hollow fiber membrane, and the suspended substances attached to the hollow fiber membrane are peeled off and removed from the return raw water flow path 15b through the return raw water header pipe 13 to the outside.

図2(c)に示すように一端部が閉塞された中空糸膜が裸のままで処理槽24内に浸漬され、該中空糸膜の開放された他端部から吸引ポンプ25により吸引して処理槽24内の飲料用原水を該中空糸膜を透過させて濾過した濾過水を汲み出す浸漬式の場合の第2の中空糸膜濾過装置7では、活性炭槽6から図示しない供給ポンプにより飲料用原水が処理槽24内に供給され、共通の濾過水排出ヘッダ管11にそれぞれ開閉バルブ26a,26bを介して濾過水排出流路12a,12bが接続され、該濾過水排出ヘッダ管11が吸引ポンプ25の吸液口となる吸水口に接続され、該吸引ポンプ25の排液口となる排水口に接続された濾過水排出ヘッダ管11に開閉バルブ30が接続され、該濾過水排出ヘッダ管11の開閉バルブ30と吸引ポンプ25との間から分岐した共通の逆洗ヘッダ管27にそれぞれ開閉バルブ28a,28bを介して逆洗流路29a,29bが接続されると共に該逆洗流路29a,29bが濾過水排出流路12a,12bの開閉バルブ26a,26bのそれぞれの上流側で連通された一対の中空糸濾過膜モジュール16a,16bからなり、各開閉バルブ26a,26b,28a,28b,30の開閉操作により該一対の中空糸濾過膜モジュール16a,16b間で相互逆洗可能に構成されている。   As shown in FIG. 2 (c), the hollow fiber membrane whose one end is closed is immersed in the treatment tank 24 while being bare, and is sucked by the suction pump 25 from the other open end of the hollow fiber membrane. In the second hollow fiber membrane filtration device 7 in the case of an immersion type that pumps filtered water that has been filtered through the hollow fiber membrane through the raw water for beverage in the treatment tank 24, the beverage is fed from the activated carbon tank 6 by a supply pump (not shown). The raw water is supplied into the treatment tank 24, and the filtrate drain passages 12a and 12b are connected to the common filtrate drain header pipe 11 via the open / close valves 26a and 26b, respectively. An on-off valve 30 is connected to a filtrate outlet header pipe 11 connected to a water inlet serving as a liquid inlet of the pump 25, and connected to a drain outlet serving as a drain outlet of the suction pump 25, and the filtrate outlet header pipe 11 to the common backwash header pipe 27 branched from the opening / closing valve 30 and the suction pump 25 The backwash channels 29a and 29b are connected via the on-off valves 28a and 28b, respectively, and the backwash channels 29a and 29b are upstream of the on-off valves 26a and 26b of the filtrate discharge channels 12a and 12b, respectively. A pair of hollow fiber filtration membrane modules 16a and 16b communicated on the side, and back-and-forth back-washing between the pair of hollow fiber filtration membrane modules 16a and 16b by opening and closing each of the on-off valves 26a, 26b, 28a, 28b and 30 It is configured to be possible.

次に図2(c)を用いて、一対の中空糸濾過膜モジュール16a,16b間で相互逆洗する操作について説明する。先ず、濾過運転を行う場合には、開閉バルブ26a,26b,及び濾過液排出ヘッダ管となる濾過水排出ヘッダ管11の吸引ポンプ25よりも濾過水流通方向下流側(図2の右側)に設けられた開閉バルブ30を開放すると共に、開閉バルブ28a,28bを閉鎖した状態で吸引ポンプ25を駆動し、処理槽24内に貯留された活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された原液となる飲料用原水を吸引して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側から内側に透過させて濾過する。   Next, with reference to FIG. 2 (c), the operation of backwashing between the pair of hollow fiber filtration membrane modules 16a and 16b will be described. First, when performing filtration operation, it is provided on the downstream side (the right side in FIG. 2) in the filtrate flow direction with respect to the on-off valves 26a and 26b and the suction pump 25 of the filtrate discharge header pipe 11 serving as the filtrate discharge header pipe. The suction valve 25 is driven with the on-off valve 30 opened and the on-off valves 28a, 28b closed, and organic matter such as mold odor substances are adsorbed and removed by the activated carbon stored in the treatment tank 24. The drinking raw water used as the stock solution is sucked and permeated from the outside to the inside of the hollow fiber membranes of the respective hollow fiber filtration membrane modules 16a and 16b for filtration.

次に一対の中空糸濾過膜モジュール16a,16b間で相互逆洗運転する場合において、中空糸濾過膜モジュール16aを逆洗運転する場合には、開閉バルブ26b,28aを開放すると共に、開閉バルブ26a,28b,30を閉鎖した状態で吸引ポンプ25を駆動し、処理槽24内に貯留した活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を吸引して中空糸濾過膜モジュール16bの中空糸膜の外側から内側に透過させ、その濾過水を中空糸濾過膜モジュール16aの濾過液排出流路となる濾過水排出流路12aに逆流させて中空糸膜の内側から外側に透過させて中空糸膜に附着した縣濁物質を剥離し、処理槽24内に排除する。   Next, when performing a mutual backwash operation between the pair of hollow fiber filtration membrane modules 16a and 16b, when the hollow fiber filtration membrane module 16a is backwashed, the on-off valves 26b and 28a are opened and the on-off valve 26a , 28b and 30 are closed, the suction pump 25 is driven, and the raw water for drinking from which the organic matter such as mold odor substance is adsorbed and removed by the activated carbon of the activated carbon tank 6 stored in the treatment tank 24 is filtered through a hollow fiber. The membrane module 16b is permeated from the outside to the inside of the hollow fiber membrane, and the filtrate is flown back to the filtrate drainage channel 12a, which serves as the filtrate drainage channel of the hollow fiber membrane module 16a, from the inside to the outside of the hollow fiber membrane. The suspended substances attached to the hollow fiber membranes are peeled off and removed into the treatment tank 24.

同様に、中空糸濾過膜モジュール16bを逆洗運転する場合には、開閉バルブ26a,28bを開放すると共に、開閉バルブ26b,28a,30を閉鎖した状態で吸引ポンプ25を駆動し、処理槽24内に貯留した活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を吸引して中空糸濾過膜モジュール16aの中空糸膜の外側から内側に透過させ、その濾過水を中空糸濾過膜モジュール16bの濾過水排出流路12bに逆流させて中空糸膜の内側から外側に透過させて該中空糸膜に附着した縣濁物質を剥離し、処理槽24内に排除する。   Similarly, when the hollow fiber filtration membrane module 16b is backwashed, the opening and closing valves 26a and 28b are opened and the suction pump 25 is driven with the opening and closing valves 26b, 28a and 30 closed, and the treatment tank 24 is operated. The raw water for beverage from which organic substances such as mold odor substances are adsorbed and removed by the activated carbon stored in the activated carbon tank 6 is sucked and permeated from the outside to the inside of the hollow fiber membrane of the hollow fiber filtration membrane module 16a. The suspended substances adhering to the hollow fiber membrane are peeled off from the inner side of the hollow fiber membrane by flowing back to the filtered water discharge channel 12b of the hollow fiber membrane module 16b and removed from the treatment tank 24.

図3は図2(a)に示して前述した外圧濾過式の第2の中空糸膜濾過装置7において、一対の中空糸濾過膜モジュール16a,16b間で行う相互逆洗中にエアーを供給するエアー供給手段となるエアー供給ヘッダ管19から分岐したエアー供給枝管19a,19bがそれぞれ開閉バルブ31a,31bを介して原水供給流路10a,10bに連通された場合の一例を示す。中空糸濾過膜モジュール16a,16b間の相互逆洗運転については図2(a)に示して前述したと同様であり、各中空糸濾過膜モジュール16a,16bの逆洗時にその中空糸濾過膜モジュール16a,16bに対応する開閉バルブ31a,31bを適宜開放してエアーバブリングによる逆洗運転を実施することが出来る。   FIG. 3 shows the external pressure filtration type second hollow fiber membrane filtration device 7 shown in FIG. 2 (a) and supplies air during mutual backwashing between the pair of hollow fiber filtration membrane modules 16a and 16b. An example in which the air supply branch pipes 19a and 19b branched from the air supply header pipe 19 serving as the air supply means are communicated with the raw water supply flow paths 10a and 10b via the open / close valves 31a and 31b, respectively. The mutual back washing operation between the hollow fiber filtration membrane modules 16a and 16b is the same as described above with reference to FIG. 2 (a), and when the hollow fiber filtration membrane modules 16a and 16b are back washed, the hollow fiber filtration membrane modules are the same. The back-and-forth operation by air bubbling can be performed by opening the on-off valves 31a and 31b corresponding to 16a and 16b as appropriate.

尚、前記各実施形態において、一対の中空糸濾過膜モジュール16a,16bとは、逆洗用濾過水を生成する1或いは複数群の中空糸濾過膜モジュールと、逆洗される1或いは複数群の濾過膜モジュールとの対をいう。また、共通の各ヘッダ管に接続された中空糸濾過膜モジュールの他にも別々の各ヘッダ管に接続された1或いは複数の中空糸濾過膜モジュール群を含む。   In each of the above embodiments, the pair of hollow fiber filtration membrane modules 16a and 16b includes one or a plurality of groups of hollow fiber filtration membrane modules that generate backwash filtered water, and one or a plurality of groups of backwashed membranes. A pair with a filtration membrane module. In addition to the hollow fiber filtration membrane module connected to each common header pipe, one or a plurality of hollow fiber filtration membrane module groups connected to different header pipes are included.

上記構成によれば、オゾン供給手段となるオゾン発生器4により飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解することが出来、その酸化分解したカビ臭物質等の有機物を活性炭槽6の活性炭により吸着除去することが出来る。そして、活性炭槽6の活性炭によりカビ臭物質等の有機物が吸着除去された飲料用原水を第2の中空糸膜濾過装置7に設けられた平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過することで、活性炭槽6を通り抜けた微生物を除去することが出来る。   According to the above configuration, ozone can be supplied to the drinking raw water by the ozone generator 4 serving as an ozone supply means to oxidize and decompose organic substances such as mold odor substances contained in the drinking raw water. The organic matter such as the mold odor substance can be adsorbed and removed by the activated carbon in the activated carbon tank 6. Then, the raw water for drinking from which organic substances such as mold odor substances are adsorbed and removed by the activated carbon in the activated carbon tank 6 is used as a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less provided in the second hollow fiber membrane filtration device 7. The microorganisms that have passed through the activated carbon tank 6 can be removed by permeation and filtration.

また、各開閉バルブの自動或いは手動の開閉操作により一対の中空糸濾過膜モジュール16a,16b間で相互逆洗可能な構成としたことで、中空糸膜に附着した縣濁物質等を洗浄するための洗浄ポンプや逆洗タンクを不要とし、濾過設備の小型化とコストダウンを図ることが出来る。   In addition, because the back and forth between the pair of hollow fiber filtration membrane modules 16a and 16b can be backwashed automatically or manually by opening and closing each open / close valve, the suspended substances attached to the hollow fiber membrane can be washed. This eliminates the need for washing pumps and backwash tanks, thereby reducing the size and cost of filtration equipment.

また、エアー供給手段となるエアー供給管により一対の中空糸濾過膜モジュール16a,16b間で行う相互逆洗中にエアーを供給することで、中空糸膜を揺らして洗浄効果を向上することが出来る。   Further, by supplying air during the mutual backwashing performed between the pair of hollow fiber filtration membrane modules 16a and 16b by the air supply pipe as an air supply means, the washing effect can be improved by shaking the hollow fiber membrane. .

尚、前記実施形態では、第2の中空糸膜濾過装置7の中空糸濾過膜モジュール16a,16b間で相互逆洗を行う場合について説明したが、第1の中空糸膜濾過装置20においても同様に中空糸濾過膜モジュール16a,16b間で相互逆洗を行うことも出来る。   In the above embodiment, the case where mutual backwashing is performed between the hollow fiber filtration membrane modules 16a and 16b of the second hollow fiber membrane filtration device 7 has been described, but the same applies to the first hollow fiber membrane filtration device 20. In addition, mutual backwashing can be performed between the hollow fiber filtration membrane modules 16a and 16b.

次に本発明に係る飲料用水膜濾システムの他の構成について図4〜図7を用いて説明する。尚、前記実施形態と同様に構成したものは同一の符号を付して説明を省略する。本実施形態では、図4〜図7に示すように、処理槽24内の底部に曝気口41a,42a,43aが配置されたエアー供給手段となるエアー供給管41,42,43を設け、処理槽24内に浸漬された複数の中空糸濾過膜モジュール16a,16b間で図1(c)に示して前述したと同様に、相互逆洗する際にエアー供給手段となるエアー供給管41,42,43によるエアーの曝気量を増加させる曝気量制御手段となる曝気量制御部44が設けられている。   Next, another structure of the drinking water membrane filter system according to the present invention will be described with reference to FIGS. In addition, what was comprised similarly to the said embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In the present embodiment, as shown in FIGS. 4 to 7, air supply pipes 41, 42, 43 serving as air supply means in which aeration ports 41 a, 42 a, 43 a are arranged at the bottom of the processing tank 24 are provided, and processing is performed. As described above with reference to FIG. 1 (c) between the plurality of hollow fiber filtration membrane modules 16a and 16b immersed in the tank 24, the air supply pipes 41 and 42 that serve as air supply means when backwashing each other. , 43 is provided with an aeration amount control unit 44 serving as an aeration amount control means for increasing the aeration amount of air.

本実施形態の曝気量制御部44は、図4に示すように、処理槽24内に浸漬された複数の中空糸濾過膜モジュール16a,16bの全体に対してエアー供給手段となるエアー供給管41,42,43によるエアーの曝気量を増加させる制御を行うことが出来る。図5は中空糸濾過膜モジュール16a,16bの下部に設けたエアー供給管41,42によるエアーの曝気量を増加させる制御を行ったものである。   As shown in FIG. 4, the aeration amount control unit 44 of the present embodiment includes an air supply pipe 41 serving as an air supply unit for the whole of the plurality of hollow fiber filtration membrane modules 16 a and 16 b immersed in the processing tank 24. , 42 and 43 can be controlled to increase the amount of air aeration. FIG. 5 shows control in which the amount of aerated air is increased by air supply pipes 41 and 42 provided at the lower part of the hollow fiber filtration membrane modules 16a and 16b.

上記構成によれば、曝気量制御手段となる曝気量制御部44により逆洗中の中空糸膜と、濾過中の中空糸膜とに全体的に曝気量を増やして、逆洗中の中空糸濾過膜モジュール(図4、図5では中空糸濾過膜モジュール16b)に対する洗浄効果と濾過中の中空糸濾過膜モジュール(図4、図5では中空糸濾過膜モジュール16a)に対する縣濁物質の再付着防止効果を高めることが出来る。   According to the above configuration, the aeration amount control unit 44 serving as the aeration amount control means increases the overall aeration amount to the hollow fiber membrane being backwashed and the hollow fiber membrane being filtered, so that the hollow fiber being backwashed Cleaning effect on the filtration membrane module (hollow fiber filtration membrane module 16b in FIGS. 4 and 5) and reattachment of suspended substances to the hollow fiber filtration membrane module being filtered (hollow fiber filtration membrane module 16a in FIGS. 4 and 5) The prevention effect can be enhanced.

また、本実施形態の曝気量制御部44は、図6に示すように、処理槽24内に浸漬された複数の中空糸濾過膜モジュール16a,16bのうち逆洗中の中空糸濾過膜モジュール(図6では中空糸濾過膜モジュール16b)に対してのみエアー供給手段となるエアー供給管42によるエアーの曝気量を増加させる制御を行うことが出来る。   Further, as shown in FIG. 6, the aeration amount control unit 44 of the present embodiment includes a hollow fiber filtration membrane module that is being backwashed among the plurality of hollow fiber filtration membrane modules 16 a and 16 b immersed in the treatment tank 24 ( In FIG. 6, it is possible to perform control for increasing the amount of air aeration by the air supply pipe 42 serving as the air supply means only for the hollow fiber filtration membrane module 16b).

上記構成によれば、曝気量制御手段となる曝気量制御部44により逆洗中の中空糸膜に対してのみ曝気量を増やして、逆洗中の中空糸濾過膜モジュール(図6では中空糸濾過膜モジュール16b)に対しては上昇流46を形成することが出来、これにより逆洗中の中空糸濾過膜モジュール(図6では中空糸濾過膜モジュール16b)から剥離された縣濁物質が該上昇流46により処理槽24の液面付近まで退避させられ、更には隣接する濾過中の中空糸濾過膜モジュール(図6では中空糸濾過膜モジュール16a)等に沿った下降流47となり、処理槽24内で旋回流を形成するので、逆洗中の中空糸濾過膜モジュール(図6では中空糸濾過膜モジュール16b)に対する洗浄効果及び濾過中の中空糸濾過膜モジュール(図6では中空糸濾過膜モジュール16a)に対する縣濁物質の再付着防止効果を効率的に高めることが出来る。   According to the above configuration, the aeration amount is increased only for the hollow fiber membrane being backwashed by the aeration amount control unit 44 serving as the aeration amount control means, and the hollow fiber filtration membrane module (in FIG. An upward flow 46 can be formed with respect to the filtration membrane module 16b), so that the suspended substances separated from the hollow fiber filtration membrane module (in FIG. 6, hollow fiber filtration membrane module 16b) being backwashed The ascending flow 46 is retracted to the vicinity of the liquid level of the treatment tank 24, and further becomes a descending flow 47 along the adjacent hollow fiber filtration membrane module (the hollow fiber filtration membrane module 16a in FIG. 6) or the like during filtration. Since a swirl flow is formed in 24, the cleaning effect on the hollow fiber filtration membrane module during backwashing (hollow fiber filtration membrane module 16b in FIG. 6) and the hollow fiber filtration membrane module during filtration (hollow fiber filtration membrane in FIG. 6) Trap for module 16a) The effect of preventing re-deposition of turbid substances can be increased efficiently.

また、本実施形態の曝気量制御部44は、図7に示すように、処理槽24内に浸漬された複数の中空糸濾過膜モジュール16a,16bのうち、逆洗中の中空糸濾過膜モジュール(図7では中空糸濾過膜モジュール16b)と、濾過中の中空糸濾過膜モジュール(図7では中空糸濾過膜モジュール16a)との間に形成される中間領域45に対してエアー供給手段となるエアー供給管43によるエアーの曝気量を増加させる制御を行うことが出来る。   Further, as shown in FIG. 7, the aeration amount control unit 44 of the present embodiment includes a hollow fiber filtration membrane module that is being backwashed among a plurality of hollow fiber filtration membrane modules 16 a and 16 b immersed in the treatment tank 24. Air supply means is provided for the intermediate region 45 formed between the hollow fiber filtration membrane module 16b in FIG. 7 and the hollow fiber filtration membrane module being filtered (hollow fiber filtration membrane module 16a in FIG. 7). Control can be performed to increase the amount of air aeration by the air supply pipe 43.

上記構成によれば、曝気量制御手段となる曝気量制御部44により逆洗中の中空糸膜と濾過中の中空糸膜との間に形成される中間領域45に対して曝気量を増やして安定した旋回流を形成し、洗浄効果を効率的に高めることが出来る。   According to the above configuration, the aeration amount is increased with respect to the intermediate region 45 formed between the hollow fiber membrane being backwashed and the hollow fiber membrane being filtered by the aeration amount control unit 44 serving as the aeration amount control means. A stable swirling flow can be formed, and the cleaning effect can be enhanced efficiently.

上記各構成によれば、処理槽24内に浸漬された複数の中空糸濾過膜モジュール16a,16b間で相互逆洗する際に、曝気量制御手段となる曝気量制御部44により曝気量を増加させることで処理槽24内の処理液中に上昇流46を形成することが出来、これにより逆洗中の中空糸膜から剥離された縣濁物質が該上昇流46により処理槽24の液面付近まで退避させられ、濾過中の中空糸膜に付着することがない。   According to each of the above configurations, the aeration amount is increased by the aeration amount control unit 44 serving as the aeration amount control means when the plurality of hollow fiber filtration membrane modules 16a and 16b immersed in the treatment tank 24 are backwashed with each other. As a result, an upward flow 46 can be formed in the treatment liquid in the treatment tank 24, and the suspended material peeled off from the hollow fiber membrane being backwashed can thereby be liquid level in the treatment tank 24 by the upward flow 46. It is retracted to the vicinity and does not adhere to the hollow fiber membrane being filtered.

次に本発明に係る中空糸膜濾過装置の更に他の構成について図8を用いて説明する。尚、前記実施形態と同様に構成したものは同一の符号を付して説明を省略する。本実施形態では、図8に示すように、処理槽24内の底部に攪拌手段となる攪拌機48を設け、複数の中空糸濾過膜モジュール16a,16b間で相互逆洗する際に該攪拌機48により処理槽24内の液を攪拌するものである。   Next, still another configuration of the hollow fiber membrane filtration device according to the present invention will be described with reference to FIG. In addition, what was comprised similarly to the said embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In this embodiment, as shown in FIG. 8, a stirrer 48 serving as a stirring means is provided at the bottom of the treatment tank 24, and the stirrer 48 performs backwashing between the plurality of hollow fiber filtration membrane modules 16a and 16b. The liquid in the treatment tank 24 is agitated.

上記構成によれば、処理槽24内に浸漬された複数の中空糸濾過膜モジュール16a,16b間で相互逆洗する際に、攪拌機48により該処理槽24内の液を攪拌することで、逆洗中の中空糸膜から剥離された縣濁物質が攪拌流により退避させられ、濾過中の中空糸膜に付着することがない。   According to the above configuration, when the plurality of hollow fiber filtration membrane modules 16a and 16b immersed in the processing tank 24 are back-washed with each other, the liquid in the processing tank 24 is stirred by the stirrer 48, thereby The suspended substance peeled off from the hollow fiber membrane being washed is retracted by the stirring flow and does not adhere to the hollow fiber membrane being filtered.

次に本発明に係る飲料用水膜濾システムの更に他の構成について図9〜図11を用いて説明する。尚、前記各実施形態と同様に構成したものは同一の符号を付して説明を省略する。本実施形態では、第1、第2の中空糸膜濾過装置7,20の他の実施形態として、図9は外圧式中空糸膜濾過装置において開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で直列に接続して中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄を行う様子を示す図、図10は外圧式中空糸膜濾過装置において複数の中空糸濾過膜モジュール間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段を設けた構成を示す図、図11は内圧式中空糸膜濾過装置において開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で直列に接続して中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄を行うと共に複数の中空糸濾過膜モジュール間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段を設けた構成を示す図である。   Next, still another configuration of the drinking water membrane filtration system according to the present invention will be described with reference to FIGS. In addition, what was comprised similarly to each said embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In this embodiment, as another embodiment of the first and second hollow fiber membrane filtration devices 7 and 20, FIG. 9 shows a plurality of hollow fiber filtration membrane modules by opening and closing valves in an external pressure hollow fiber membrane filtration device. FIG. 10 is a diagram showing a state in which flushing cleaning is performed to wash the hollow fiber membrane by flowing a stock solution outside the hollow fiber membrane by connecting them in series, FIG. 10 shows a plurality of hollow fiber filtration membranes in an external pressure type hollow fiber membrane filtration device FIG. 11 is a diagram showing a configuration provided with an air supply means for mixing air with a mutual flushing cleaning liquid performed between modules. FIG. 11 shows a series of a plurality of hollow fiber filtration membrane modules by opening and closing valves in an internal pressure type hollow fiber membrane filtration device. To the outside of the hollow fiber membrane, and flushing washing to wash the hollow fiber membrane and mixing the air with the mutual flushing washing solution to be performed between multiple hollow fiber filtration membrane modules That is a diagram showing a configuration in which the air supply means.

図9は中空糸膜濾過装置7の各開閉バルブの開閉操作により一対の中空糸濾過膜モジュール16a,16b間で直列に接続して中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄を行う様子を示し、各中空糸濾過膜モジュール16a,16bは中空糸膜が外装ケース内に収容された外圧式として構成される。   FIG. 9 shows that the hollow fiber membrane filtration device 7 is opened and closed by opening and closing each of the pair of hollow fiber filtration membrane modules 16a and 16b in series, and the stock solution is allowed to flow outside the hollow fiber membrane to clean the hollow fiber membrane. The state in which flushing washing is performed is shown, and each hollow fiber filtration membrane module 16a, 16b is configured as an external pressure type in which the hollow fiber membrane is housed in an outer case.

図9に示すように外装ケース内に収容された中空糸膜の外側から原液に圧力をかけて該中空糸膜の内側に濾過液を透過させる外圧式の場合の中空糸膜濾過装置7では、図示しない供給ポンプにより供給される共通の原液供給ヘッダ管8にそれぞれ開閉バルブ9a,9bを介して原液供給流路10a,10bが接続され、且つ共通の濾過液排出ヘッダ管11にそれぞれ濾過液排出流路12a,12bが接続されると共に該濾過液排出ヘッダ管11に開閉バルブ18が設けられ、且つ共通の戻り原液ヘッダ管13にそれぞれ開閉バルブ14a,14bを介して戻り原液流路15a,15bが接続され、且つ一方の戻り原液流路15a,15bと他方の原液供給流路10a,10bとがそれぞれ開閉バルブ6a,6bを介して直列フラッシング管5a,5bにより接続(即ち、戻り原液流路15aと原液供給流路10bとが開閉バルブ6aを介して直列フラッシング管5aにより接続されると共に、戻り原液流路15bと原液供給流路10aとが開閉バルブ6bを介して直列フラッシング管5bにより接続)された一対の中空糸濾過膜モジュール16a,16bからなり、各開閉バルブ6a,6b,9a,9b,14a,14b,18の開閉操作により該一対の中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄が可能に構成されている。   In the hollow fiber membrane filtration device 7 in the case of the external pressure type in which the filtrate is permeated through the inside of the hollow fiber membrane by applying pressure to the stock solution from the outside of the hollow fiber membrane accommodated in the outer case as shown in FIG. Undiluted solution supply flow paths 10a and 10b are connected to a common undiluted solution supply header pipe 8 supplied by a supply pump (not shown) via open / close valves 9a and 9b, respectively, and a filtrate is discharged to a common filtrate discharge header pipe 11 respectively. The flow path 12a, 12b is connected and the filtrate discharge header pipe 11 is provided with an opening / closing valve 18, and the return stock solution flow paths 15a, 15b are connected to the common return stock solution header pipe 13 via the opening / closing valves 14a, 14b, respectively. Are connected to each other and the other stock solution supply channels 10a and 10b are connected by serial flushing pipes 5a and 5b via open / close valves 6a and 6b (that is, the return stock solution channels are connected). 15a and The stock solution supply flow path 10b is connected to the series flushing pipe 5a via the open / close valve 6a, and the return stock solution flow path 15b and the stock solution supply flow path 10a are connected to each other via the open / close valve 6b via the serial flushing pipe 5b. A pair of hollow fiber filtration membrane modules 16a and 16b, which are connected in series between the pair of hollow fiber filtration membrane modules 16a and 16b by opening and closing each of the on-off valves 6a, 6b, 9a, 9b, 14a, 14b and 18. Thus, flushing washing is possible in which the stock solution is flowed outside the hollow fiber membranes of the hollow fiber filtration membrane modules 16a and 16b to wash the hollow fiber membranes.

次に図9を用いて、一対の中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄を行う操作について説明する。先ず、濾過運転を行う場合には、開閉バルブ9a,9b及び濾過液排出ヘッダ管11の濾過液排出流路12a,12bよりも濾過液流通方向下流側(図9の右側)に設けられた開閉バルブ18を開放すると共に、開閉バルブ6a,6b,14a,14bを閉鎖した状態で各中空糸濾過膜モジュール16a,16bの中空糸膜の外側から内側(外圧式濾過)に原液を透過させて全濾過するか、或いは開閉バルブ14a,14bを開放した状態で原液の一部が中空糸膜の外側を流通して図示しない原液タンクに収容される循環濾過を行う。   Next, using FIG. 9, the pair of hollow fiber filtration membrane modules 16a and 16b are connected in series, and the stock solution is flowed outside the hollow fiber membranes of the respective hollow fiber filtration membrane modules 16a and 16b. An operation for performing flushing cleaning for cleaning will be described. First, when performing the filtration operation, the opening / closing valve 9a, 9b and the opening / closing provided on the downstream side in the filtrate flow direction (the right side in FIG. 9) from the filtrate discharge passages 12a, 12b of the filtrate discharge header pipe 11. While the valve 18 is opened and the on-off valves 6a, 6b, 14a, 14b are closed, the stock solution is permeated from the outside to the inside (external pressure filtration) of the hollow fiber membranes of the hollow fiber filtration membrane modules 16a, 16b. Filtering is performed, or circulating filtration is performed in which a part of the stock solution flows outside the hollow fiber membrane and is accommodated in a stock solution tank (not shown) with the open / close valves 14a and 14b opened.

次に一対の中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄運転する場合において、中空糸濾過膜モジュール16aを先行してフラッシング洗浄運転する場合には、開閉バルブ6a,9a,14bを開放すると共に、開閉バルブ6b,9b,14a,18を閉鎖した状態で原液供給流路10aから原液を供給して該中空糸濾過膜モジュール16aの中空糸膜の外側を流通させて該中空糸膜の外側表面に附着した縣濁物質を剥離して戻り原液流路15aから外部に排除し、更に該戻り原液流路15aから排出されたフラッシング洗浄液を直列フラッシング管5aを介して中空糸濾過膜モジュール16bの原液供給流路10bから供給して該中空糸濾過膜モジュール16bの中空糸膜の外側を流通させて該中空糸膜の外側表面に附着した縣濁物質を剥離して戻り原液流路15bから戻り原液ヘッダ管13を介して外部に排除する。   Next, a flushing washing operation is performed in which the pair of hollow fiber filtration membrane modules 16a and 16b are connected in series, and a stock solution is flowed outside the hollow fiber membranes of the hollow fiber filtration membrane modules 16a and 16b to wash the hollow fiber membranes. In this case, when the hollow fiber filtration membrane module 16a is preceded by the flushing washing operation, the on-off valve 6a, 9a, 14b is opened and the on-off valve 6b, 9b, 14a, 18 is closed. The stock solution is supplied from the passage 10a and circulates outside the hollow fiber membrane of the hollow fiber membrane module 16a to peel off the suspended substances attached to the outer surface of the hollow fiber membrane and return to the outside from the stock solution channel 15a. Further, the flushing washing liquid discharged from the return raw liquid flow path 15a is supplied from the raw liquid supply flow path 10b of the hollow fiber filtration membrane module 16b via the serial flushing pipe 5a to supply the hollow fiber filtration membrane module. The suspended material attached to the outer surface of the hollow fiber membrane is peeled off through the outside of the hollow fiber membrane of the cable 16b and removed from the return stock solution flow path 15b through the return stock solution header tube 13 to the outside.

同様に、中空糸濾過膜モジュール16bを先行してフラッシング洗浄運転する場合には、開閉バルブ6b,9b,14aを開放すると共に、開閉バルブ6a,9a,14b,18を閉鎖した状態で原液供給流路10bから原液を供給して該中空糸濾過膜モジュール16bの中空糸膜の外側を流通させて該中空糸膜の外側表面に附着した縣濁物質を剥離して戻り原液流路15bから外部に排除し、更に該戻り原液流路15bから排出されたフラッシング洗浄液を直列フラッシング管5bを介して中空糸濾過膜モジュール16aの原液供給流路10aから供給して該中空糸濾過膜モジュール16aの中空糸膜の外側を流通させて該中空糸膜の外側表面に附着した縣濁物質を剥離して戻り原液流路15aから戻り原液ヘッダ管13を介して外部に排除する。   Similarly, when the hollow fiber filtration membrane module 16b is preceded by the flushing washing operation, the on-off valves 6b, 9b, and 14a are opened, and the on-off valves 6a, 9a, 14b, and 18 are closed. The stock solution is supplied from the passage 10b and circulates outside the hollow fiber membrane of the hollow fiber membrane module 16b so that the suspended substances attached to the outer surface of the hollow fiber membrane are peeled off and returned to the outside from the stock solution channel 15b. Further, the flushing washing liquid discharged from the return raw liquid flow path 15b is supplied from the raw liquid supply flow path 10a of the hollow fiber filtration membrane module 16a through the serial flushing pipe 5b, and the hollow fiber of the hollow fiber filtration membrane module 16a is supplied. The suspended substance adhering to the outer surface of the hollow fiber membrane is peeled off through the outside of the membrane and removed from the return stock solution flow path 15a through the return stock solution header tube 13 to the outside.

図10は図9に示して前述した外圧濾過式の中空糸膜濾過装置7において、一対の中空糸濾過膜モジュール16a,16b間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段となるエアー供給ヘッダ管19から分岐したエアー供給枝管19a,19bがそれぞれ開閉バルブ17a,17bを介して原液供給流路10a,10bに連通された場合の一例を示す。中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄運転については図9に示して前述したと同様であり、各中空糸濾過膜モジュール16a,16bのフラッシング洗浄時にその中空糸濾過膜モジュール16a,16bに対応する開閉バルブ17a,17bを適宜開放してエアーバブリングによるフラッシング洗浄運転を実施することが出来る。   FIG. 10 shows an air supply serving as an air supply means for mixing air with a mutual flushing cleaning liquid performed between the pair of hollow fiber filtration membrane modules 16a and 16b in the external pressure filtration type hollow fiber membrane filtration device 7 shown in FIG. An example in which the air supply branch pipes 19a and 19b branched from the header pipe 19 are connected to the stock solution supply flow paths 10a and 10b via the open / close valves 17a and 17b, respectively. FIG. 9 shows the flushing washing operation in which the hollow fiber membrane modules 16a and 16b are connected in series and the stock solution is flowed outside the hollow fiber membranes of the hollow fiber membrane modules 16a and 16b to wash the hollow fiber membranes. As described above, the flushing cleaning operation by air bubbling is performed by appropriately opening the opening / closing valves 17a and 17b corresponding to the hollow fiber filtration membrane modules 16a and 16b during the flushing washing of the hollow fiber filtration membrane modules 16a and 16b. Can be implemented.

図11は内圧濾過式の中空糸膜濾過装置7の一例であり、図11に示すように外装ケース内に収容された中空糸膜の内側から原液に圧力をかけて該中空糸膜の外側に濾過液を透過させる内圧式の場合の中空糸膜濾過装置7では、図示しない供給ポンプにより供給される共通の原液供給ヘッダ管8にそれぞれ開閉バルブ9a,9bを介して原液供給流路10a,10bが接続され、且つ共通の濾過液排出ヘッダ管11にそれぞれ濾過液排出流路12a,12bが接続されると共に該濾過液排出ヘッダ管11に開閉バルブ18が設けられ、且つ共通の戻り原液ヘッダ管13にそれぞれ開閉バルブ14a,14bを介して戻り原液流路15a,15bが接続され、且つ一方の戻り原液流路15a,15bと他方の原液供給流路10a,10bとがそれぞれ開閉バルブ6a,6bを介して直列フラッシング管5a,5bにより接続(即ち、戻り原液流路15aと原液供給流路10bとが開閉バルブ6aを介して直列フラッシング管5aにより接続されると共に、戻り原液流路15bと原液供給流路10aとが開閉バルブ6bを介して直列フラッシング管5bにより接続)された一対の中空糸濾過膜モジュール16a,16bからなり、各開閉バルブ6a,6b,9a,9b,14a,14b,18の開閉操作により該一対の中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄が可能に構成されている。   FIG. 11 shows an example of an internal pressure filtration type hollow fiber membrane filtration device 7, and as shown in FIG. 11, pressure is applied to the stock solution from the inside of the hollow fiber membrane accommodated in the outer case to place it outside the hollow fiber membrane. In the hollow fiber membrane filtration device 7 in the case of the internal pressure type that allows the filtrate to permeate, the stock solution supply flow paths 10a and 10b are respectively connected to a common stock solution supply header pipe 8 supplied by a supply pump (not shown) via open / close valves 9a and 9b. Are connected to the common filtrate discharge header pipe 11 respectively, and the filtrate discharge header pipe 11 is provided with an open / close valve 18 and a common return concentrate header pipe. 13 is connected to return stock solution channels 15a and 15b via open / close valves 14a and 14b, respectively, and one return stock solution channel 15a and 15b and the other stock solution supply channels 10a and 10b are connected to open / close valves 6a and 6b, respectively. Through series flashin Connected by pipes 5a and 5b (that is, the return stock solution flow path 15a and the stock solution supply flow path 10b are connected by the series flushing pipe 5a through the open / close valve 6a, and the return stock solution flow path 15b and the stock solution supply flow path 10a Are connected by a series flushing pipe 5b through an open / close valve 6b), and a pair of hollow fiber filtration membrane modules 16a, 16b. The open / close valves 6a, 6b, 9a, 9b, 14a, 14b, and 18 are opened and closed. A configuration in which a pair of hollow fiber filtration membrane modules 16a and 16b are connected in series and a flushing washing is performed to wash the hollow fiber membranes by flowing a stock solution outside the hollow fiber membranes of the hollow fiber filtration membrane modules 16a and 16b. Has been.

次に図11を用いて、一対の中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の内側に原液を流して該中空糸膜を洗浄するフラッシング洗浄を行う操作について説明する。先ず、濾過運転を行う場合には、開閉バルブ9a,9b及び濾過液排出ヘッダ管11の濾過液排出流路12a,12bよりも濾過液流通方向下流側(図11の右側)に設けられた開閉バルブ18を開放すると共に、開閉バルブ6a,6b,14a,14bを閉鎖した状態で各中空糸濾過膜モジュール16a,16bの中空糸膜の内側から外側(内圧式濾過)に原液を透過させて全濾過するか、或いは開閉バルブ14a,14bを開放した状態で原液の一部が中空糸膜の内側を流通して図示しない原液タンクに収容される循環濾過を行う。   Next, referring to FIG. 11, the pair of hollow fiber filtration membrane modules 16a and 16b are connected in series, and the stock solution is flowed inside the hollow fiber membranes of the respective hollow fiber filtration membrane modules 16a and 16b. An operation for performing flushing cleaning for cleaning will be described. First, when performing the filtration operation, the opening / closing valve 9a, 9b and the opening / closing provided on the downstream side of the filtrate discharge flow path 12a, 12b of the filtrate discharge header pipe 11 in the filtrate flow direction (right side in FIG. 11). While the valve 18 is opened and the open / close valves 6a, 6b, 14a, 14b are closed, the stock solution is permeated from the inside to the outside (internal pressure filtration) of the hollow fiber membranes of the hollow fiber filtration membrane modules 16a, 16b. Filtering is performed, or circulating filtration is performed in which a part of the stock solution circulates inside the hollow fiber membrane and is accommodated in a stock solution tank (not shown) with the open / close valves 14a and 14b opened.

次に一対の中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の内側に原液を流して該中空糸膜を洗浄するフラッシング洗浄運転する場合において、中空糸濾過膜モジュール16aを先行してフラッシング洗浄運転する場合には、開閉バルブ6a,9a,14bを開放すると共に、開閉バルブ6b,9b,14a,18を閉鎖した状態で原液供給流路10aから原液を供給して該中空糸濾過膜モジュール16aの中空糸膜の内側を流通させて該中空糸膜の内側表面に附着した縣濁物質を剥離して戻り原液流路15aから外部に排除し、更に該戻り原液流路15aから排出されたフラッシング洗浄液を直列フラッシング管5aを介して中空糸濾過膜モジュール16bの原液供給流路10bから供給して該中空糸濾過膜モジュール16bの中空糸膜の内側を流通させて該中空糸膜の内側表面に附着した縣濁物質を剥離して戻り原液流路15bから戻り原液ヘッダ管13を介して外部に排除する。   Next, a flushing washing operation is performed in which a pair of hollow fiber filtration membrane modules 16a and 16b are connected in series, and a stock solution is passed inside the hollow fiber membranes of the hollow fiber filtration membrane modules 16a and 16b to wash the hollow fiber membranes. In this case, when the hollow fiber filtration membrane module 16a is preceded by the flushing washing operation, the on-off valve 6a, 9a, 14b is opened and the on-off valve 6b, 9b, 14a, 18 is closed. The stock solution is supplied from the passage 10a, and the inside of the hollow fiber membrane of the hollow fiber membrane module 16a is circulated to peel off the suspended substances attached to the inner surface of the hollow fiber membrane. Further, the flushing washing liquid discharged from the return raw liquid flow path 15a is supplied from the raw liquid supply flow path 10b of the hollow fiber filtration membrane module 16b via the serial flushing pipe 5a to supply the hollow fiber filtration membrane module. The suspended substance adhering to the inner surface of the hollow fiber membrane is peeled off through the inside of the hollow fiber membrane of the cable 16b and removed from the return stock solution channel 15b via the return stock solution header tube 13 to the outside.

同様に、中空糸濾過膜モジュール16bを先行してフラッシング洗浄運転する場合には、開閉バルブ6b,9b,14aを開放すると共に、開閉バルブ6a,9a,14b,18を閉鎖した状態で原液供給流路10bから原液を供給して該中空糸濾過膜モジュール16bの中空糸膜の内側を流通させて該中空糸膜の内側表面に附着した縣濁物質を剥離して戻り原液流路15bから外部に排除し、更に該戻り原液流路15bから排出されたフラッシング洗浄液を直列フラッシング管5bを介して中空糸濾過膜モジュール16aの原液供給流路10aから供給して該中空糸濾過膜モジュール16aの中空糸膜の内側を流通させて該中空糸膜の内側表面に附着した縣濁物質を剥離して戻り原液流路15aから戻り原液ヘッダ管13を介して外部に排除する。   Similarly, when the hollow fiber filtration membrane module 16b is preceded by the flushing washing operation, the on-off valves 6b, 9b, and 14a are opened, and the on-off valves 6a, 9a, 14b, and 18 are closed. The stock solution is supplied from the passage 10b and circulates inside the hollow fiber membrane of the hollow fiber membrane module 16b to peel off the suspended substances attached to the inner surface of the hollow fiber membrane and return to the outside from the stock solution channel 15b. Further, the flushing washing liquid discharged from the return raw liquid flow path 15b is supplied from the raw liquid supply flow path 10a of the hollow fiber filtration membrane module 16a through the serial flushing pipe 5b, and the hollow fiber of the hollow fiber filtration membrane module 16a is supplied. The suspended substance attached to the inner surface of the hollow fiber membrane is peeled off through the inside of the membrane and removed from the return stock solution flow path 15a through the return stock solution header tube 13 to the outside.

図11においても一対の中空糸濾過膜モジュール16a,16b間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段となるエアー供給ヘッダ管19から分岐したエアー供給枝管19a,19bがそれぞれ開閉バルブ17a,17bを介して原液供給流路10a,10bに連通されており、中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の内側に原液を流して該中空糸膜を洗浄するフラッシング洗浄運転時にその中空糸濾過膜モジュール16a,16bに対応する開閉バルブ17a,17bを適宜開放してエアーバブリングによるフラッシング洗浄運転を実施することが出来る。   Also in FIG. 11, air supply branch pipes 19a and 19b branched from an air supply header pipe 19 serving as an air supply means for mixing air with a mutual flushing cleaning liquid performed between a pair of hollow fiber filtration membrane modules 16a and 16b are respectively open / close valves 17a. , 17b are connected to the stock solution supply channels 10a, 10b, and are connected in series between the hollow fiber filtration membrane modules 16a, 16b, and are connected to the inside of the hollow fiber membranes of the hollow fiber filtration membrane modules 16a, 16b. The flushing washing operation by air bubbling can be carried out by opening the on-off valves 17a and 17b corresponding to the hollow fiber filtration membrane modules 16a and 16b as appropriate during the flushing washing operation in which the hollow fiber membrane is washed.

尚、前記実施形態において、一対の中空糸濾過膜モジュール16a,16b以外にも複数の中空糸濾過膜モジュールを順次直列に接続したものや、複数の中空糸濾過膜モジュールを並列接続した濾過膜モジュール群を直列に接続した構成も含む。   In the embodiment, in addition to the pair of hollow fiber filtration membrane modules 16a and 16b, a plurality of hollow fiber filtration membrane modules connected in series or a filtration membrane module in which a plurality of hollow fiber filtration membrane modules are connected in parallel. A configuration in which groups are connected in series is also included.

上記構成によれば、各開閉バルブの開閉操作により一対の中空糸濾過膜モジュール16a,16b間で直列に接続して各中空糸濾過膜モジュール16a,16bの中空糸膜の外側或いは内側に原液を流して該中空糸膜を洗浄するフラッシング洗浄が可能な構成としたことでフラッシング洗浄で廃棄される原液(濃縮液)の液量を低減でき、廃液処理量も低減出来る。   According to the above configuration, the stock solution is connected to the outside or the inside of the hollow fiber membranes of the hollow fiber filtration membrane modules 16a and 16b by connecting in series between the pair of hollow fiber filtration membrane modules 16a and 16b by opening and closing the open / close valves. By adopting a configuration capable of flushing and washing the hollow fiber membrane by flowing, the amount of the stock solution (concentrated solution) discarded by the flushing washing can be reduced, and the waste liquid treatment amount can also be reduced.

また、エアー供給手段となるエアー供給管により一対の中空糸濾過膜モジュール16a,16b間で行う相互フラッシング洗浄液にエアーを混合することで、中空糸膜を揺らして洗浄効果を向上することが出来る。他の構成は前記各実施形態と同様に構成され、同様な効果を得ることが出来る。   In addition, by mixing air with the mutual flushing cleaning liquid performed between the pair of hollow fiber filtration membrane modules 16a and 16b by the air supply pipe as an air supply means, the cleaning effect can be improved by shaking the hollow fiber membrane. Other configurations are the same as those of the above-described embodiments, and the same effects can be obtained.

次に本発明に係る飲料用水膜濾システムの更に他の構成について図12〜図17を用いて説明する。尚、前記各実施形態と同様に構成したものは同一の符号を付して説明を省略する。本実施形態では、図12〜図17に示すように、飲料用原水中に含まれるカビ臭物質等の有機物を吸着する活性炭を含む活性炭槽6A,6Bと、該活性炭槽6A,6Bよりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置7A,7Bとが2組並列に接続され、各活性炭槽6A,6Bのそれぞれの下流側と、各中空糸膜濾過装置7A,7Bのそれぞれの上流側とを一同に接続する第1の中継流路51と、各中空糸膜濾過装置7A,7Bのそれぞれの下流側と、該第1の中継流路51とを一同に接続する第2の中継流路52とを有して構成される。   Next, still another configuration of the drinking water membrane filtration system according to the present invention will be described with reference to FIGS. In addition, what was comprised similarly to each said embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In this embodiment, as shown in FIGS. 12 to 17, activated carbon tanks 6A and 6B containing activated carbon that adsorbs organic substances such as mold odor substances contained in raw drinking water, and downstream of the activated carbon tanks 6A and 6B. Two sets of hollow fiber membrane filtration devices 7A and 7B for filtering raw water for drinking on the side through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less are connected in parallel, and each of the activated carbon tanks 6A and 6B is connected in parallel. A first relay channel 51 that connects the downstream side of each of the hollow fiber membrane filtration devices 7A and 7B together, the downstream side of each of the hollow fiber membrane filtration devices 7A and 7B, The first relay channel 51 is configured to have a second relay channel 52 that is connected together.

図14及び図15では、二方弁を用いて構成した一例であり、各活性炭槽6A,6Bの上流側にそれぞれ設けられた第1の開閉バルブとなる開閉バルブV,Vと、第1の中継流路51上で第2の中継流路52が接続される部位の両側にそれぞれ設けられた第2の開閉バルブとなる開閉バルブV,Vと、各中空糸膜濾過装置7A,7Bの下流側と第2の中継流路52とが接続される部位の下流側に設けられた第3の開閉バルブとなる開閉バルブVとの開閉操作により該複数の活性炭槽6A,6Bにそれぞれ含まれる活性炭と、複数の中空糸膜濾過装置7A,7Bのそれぞれに設けられた中空糸濾過膜モジュール16a,16bとの間で相互逆洗可能に構成される。 14 and 15 show an example of a configuration using a two-way valve. On-off valves V 1 and V 2 serving as first on-off valves respectively provided on the upstream side of the activated carbon tanks 6A and 6B, On-off valves V 3 and V 4 serving as second on-off valves respectively provided on both sides of a portion to which the second relay passage 52 is connected on the one relay passage 51, and each hollow fiber membrane filtration device 7A downstream and a second relay passage 52 and the plurality of the activated carbon tanks 6A by opening and closing operation of the opening and closing valve V 9 of the third on-off valve provided on the downstream side of the site to be connected to 7B, 6B In each of the plurality of hollow fiber membrane filtration devices 7A and 7B, and the hollow fiber filtration membrane modules 16a and 16b provided in each of the hollow fiber membrane filtration devices 7A and 7B.

また、図16及び図17では、二方弁と三方弁とを用いて構成した一例であり、各活性炭槽6A,6Bの上流側に設けられた第1の三方弁V31と、第1の中継流路51上で第2の中継流路52が接続される部位に設けられた第2の三方弁V32と、各中空糸膜濾過装置7A,7Bの下流側と第2の中継流路52とが接続される部位の下流側に設けられた開閉バルブVとの開閉操作及び切替操作により該複数の活性炭槽6A,6Bにそれぞれ含まれる活性炭と、複数の中空糸膜濾過装置7A,7Bのそれぞれに設けられた中空糸濾過膜モジュール16a,16bとの間で相互逆洗可能に構成される。 FIGS. 16 and 17 show an example in which a two-way valve and a three-way valve are used. The first three-way valve V 31 provided on the upstream side of each activated carbon tank 6A, 6B, and the first A second three-way valve V 32 provided at a portion to which the second relay channel 52 is connected on the relay channel 51, the downstream side of each of the hollow fiber membrane filtration devices 7A and 7B, and the second relay channel. activated carbon contained plurality of activated carbon tanks 6A, the 6B respectively by the opening and closing operation and switching operation between the opening and closing valve V 9 provided on the downstream side of a portion 52 and is connected, a plurality of hollow fiber membrane filtering device 7A, 7B is configured to be mutually backwashable with the hollow fiber filtration membrane modules 16a and 16b provided in each of 7B.

図12は図1に示す移送ポンプ21と中間タンク17との間に、図14或いは図16に示す活性炭槽6A,6Bと、該活性炭槽6A,6Bよりも下流側にそれぞれ接続された中空糸膜濾過装置7A,7Bとが2組並列に接続された相互逆洗ユニット50が接続された場合の一例であり、図13は図1に示す第1の中空糸膜濾過装置20、オゾン発生器4、混合器3、排オゾン処理器22、反応タンク5及び移送ポンプ21を省略して供給ポンプ2と中間タンク17との間に、図14或いは図16に示す活性炭槽6A,6Bと、該活性炭槽6A,6Bよりも下流側にそれぞれ接続された中空糸膜濾過装置7A,7Bとが2組並列に接続された相互逆洗ユニット50が接続された場合の一例である。図13では飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン処理が不要とされる井戸水等の比較的上質の飲料用原水を濾過する場合に適しており、オゾン系経路を省略して、より低コストの飲料用水濾過システムを構築することが出来るものである。   FIG. 12 shows activated carbon tanks 6A and 6B shown in FIG. 14 or FIG. 16 and hollow fibers connected downstream of the activated carbon tanks 6A and 6B between the transfer pump 21 and the intermediate tank 17 shown in FIG. FIG. 13 shows an example of a case where a mutual backwash unit 50 in which two sets of membrane filtration devices 7A and 7B are connected in parallel is connected, and FIG. 13 shows the first hollow fiber membrane filtration device 20 and ozone generator shown in FIG. 4, the mixer 3, the exhaust ozone processor 22, the reaction tank 5 and the transfer pump 21 are omitted, and the activated carbon tanks 6A and 6B shown in FIG. This is an example in which a mutual backwash unit 50 in which two sets of hollow fiber membrane filtration devices 7A and 7B connected downstream of the activated carbon tanks 6A and 6B are connected in parallel is connected. In Figure 13, it is suitable for filtering relatively high-quality drinking water such as well water that does not require ozone treatment to oxidize and decompose organic substances such as musty odor substances contained in drinking water. Omitted and a lower cost drinking water filtration system can be constructed.

次に図14及び図15を用いて、二方弁からなる各開閉バルブV〜Vの開閉操作により複数の活性炭槽6A,6Bに含まれる活性炭と、複数の中空糸膜濾過装置7A,7Bのそれぞれの中空糸濾過膜モジュールとの間で相互逆洗する様子を説明する。先ず、濾過運転を行う場合には、開閉バルブV,V,Vを開放すると共に、開閉バルブV〜Vを閉鎖し、各活性炭槽6A,6B及び中空糸膜濾過装置7A,7Bを飲料用原水がそれぞれ通過して濾過された飲料用濾過水が中間タンク17に貯留される。 Next, using FIG. 14 and FIG. 15, activated carbon contained in the plurality of activated carbon tanks 6A and 6B and a plurality of hollow fiber membrane filtration devices 7A, by opening and closing each of the opening and closing valves V 1 to V 9 composed of two-way valves. The state of backwashing with each of the hollow fiber filtration membrane modules 7B will be described. First, when performing the filtration operation, the open / close valves V 1 , V 2 , V 9 are opened and the open / close valves V 3 -V 8 are closed, and the activated carbon tanks 6A, 6B and the hollow fiber membrane filtration device 7A, Beverage filtrate water that has been filtered through the beverage raw water passing through 7B is stored in the intermediate tank 17.

次に、中空糸膜濾過装置7Aの濾過液を用いて活性炭槽6Bに含まれる活性炭を洗浄する場合(図15に示す逆洗浄1)には、開閉バルブV,V,Vを開放すると共に、開閉バルブV,V,V,V〜Vを閉鎖し、活性炭槽6A及び中空糸膜濾過装置7Aを飲料用原水が通過して濾過された飲料用濾過水が第2の中継流路52から第1の中継流路51を経由して活性炭槽6Bに含まれる活性炭を洗浄して排液流路53から洗浄水が排出される。 Next, when the activated carbon contained in the activated carbon tank 6B is washed using the filtrate of the hollow fiber membrane filtration device 7A (back washing 1 shown in FIG. 15), the on-off valves V 1 , V 4 , V 6 are opened. At the same time, the on-off valves V 2 , V 3 , V 5 , V 7 to V 9 are closed, and the beverage filtered water that has been filtered through the activated carbon tank 6A and the hollow fiber membrane filtration device 7A is filtered. The activated carbon contained in the activated carbon tank 6B is washed from the second relay channel 52 via the first relay channel 51, and the washing water is discharged from the drainage channel 53.

次に、中空糸膜濾過装置7Bの濾過液を用いて活性炭槽6Aに含まれる活性炭を洗浄する場合(図15に示す逆洗浄2)には、開閉バルブV,V,Vを開放すると共に、開閉バルブV,V,V〜Vを閉鎖し、活性炭槽6B及び中空糸膜濾過装置7Bを飲料用原水が通過して濾過された飲料用濾過水が第2の中継流路52から第1の中継流路51を経由して活性炭槽6Aに含まれる活性炭を洗浄して排液流路54から洗浄水が排出される。 Next, when the activated carbon contained in the activated carbon tank 6A is washed using the filtrate of the hollow fiber membrane filtration device 7B (back washing 2 shown in FIG. 15), the on-off valves V 2 , V 3 , V 5 are opened. At the same time, the on-off valves V 1 , V 4 , V 6 to V 9 are closed, and the filtered filtered water for beverage filtered through the activated carbon tank 6B and the hollow fiber membrane filtration device 7B through the drinking water is the second relay. The activated carbon contained in the activated carbon tank 6 </ b> A is washed from the flow channel 52 via the first relay flow channel 51, and the washing water is discharged from the drainage flow channel 54.

次に、中空糸膜濾過装置7Aの濾過液を用いて中空糸膜濾過装置7Bの中空糸濾過膜モジュールの中空糸膜を洗浄する場合(図15に示す逆洗浄3)には、開閉バルブV,Vを開放すると共に、開閉バルブV〜V,Vを閉鎖し、活性炭槽6A及び中空糸膜濾過装置7Aを飲料用原水が通過して濾過された飲料用濾過水により中空糸膜濾過装置7Bの中空糸濾過膜モジュールの中空糸膜を洗浄して排液流路55から洗浄水が排出される。 Next, when the hollow fiber membrane of the hollow fiber filtration membrane module of the hollow fiber membrane filtration device 7B is washed using the filtrate of the hollow fiber membrane filtration device 7A (backwash 3 shown in FIG. 15), the open / close valve V 1, thereby opening the V 8, the opening and closing valve V 2 ~V 7, closing the V 9, hollow activated carbon tanks 6A and hollow fiber membrane filtration system 7A by filtered water for beverage raw water for drinking was filtered through The hollow fiber membrane of the hollow fiber filtration membrane module of the yarn membrane filtration device 7B is washed, and the washing water is discharged from the drainage channel 55.

次に、中空糸膜濾過装置7Bの濾過液を用いて中空糸膜濾過装置7Aの中空糸濾過膜モジュールの中空糸膜を洗浄する場合(図15に示す逆洗浄4)には、開閉バルブV,Vを開放すると共に、開閉バルブV,V〜V,V,Vを閉鎖し、活性炭槽6B及び中空糸膜濾過装置7Bを飲料用原水が通過して濾過された飲料用濾過水により中空糸膜濾過装置7Aの中空糸濾過膜モジュールの中空糸膜を洗浄して排液流路56から洗浄水が排出される。 Next, when washing the hollow fiber membrane of the hollow fiber filtration membrane module of the hollow fiber membrane filtration device 7A using the filtrate of the hollow fiber membrane filtration device 7B (backwash 4 shown in FIG. 15), the open / close valve V together to open the 2, V 7, and closes the opening and closing valve V 1, V 3 ~V 6, V 8, V 9, raw water for drinking activated carbon vessel 6B and the hollow fiber membrane filtration apparatus 7B is filtered through The hollow fiber membrane of the hollow fiber membrane module of the hollow fiber membrane filtration device 7A is washed with the filtered water for beverage, and the washing water is discharged from the drainage flow path 56.

次に図16及び図17を用いて、二方弁からなる各開閉バルブV〜Vの開閉操作及び三方弁V31,V32の切替操作により複数の活性炭槽6A,6Bに含まれる活性炭と、複数の中空糸膜濾過装置7A,7Bのそれぞれの中空糸濾過膜モジュールとの間で相互逆洗する様子を説明する。先ず、濾過運転を行う場合には、三方弁V31を活性炭槽6A,6Bの両側に開放すると共に、三方弁V32を活性炭槽6A,6Bの両側とも閉鎖し、更に、開閉バルブVを開放すると共に、開閉バルブV〜Vを閉鎖し、各活性炭槽6A,6B及び中空糸膜濾過装置7A,7Bを飲料用原水がそれぞれ通過して濾過された飲料用濾過水が中間タンク17に貯留される。 Next, with reference to FIGS. 16 and 17, the activated carbon contained in a plurality of activated carbon tanks 6A, 6B by the opening and closing operation and switching operation of the three-way valve V 31, V 32 of the opening and closing valve V 5 ~V 9 consisting of two-way valve And the state of mutual backwashing between the hollow fiber filtration membrane modules of the plurality of hollow fiber membrane filtration devices 7A and 7B. First, in the case of performing filtering operation, the activated carbon tanks 6A the three-way valve V 31, with opening on either side of 6B, activated carbon tank 6A the three-way valve V 32, closing both sides of 6B, further, the opening and closing valve V 9 Opening and closing the on-off valves V 5 to V 8 , and drinking water filtered through the activated carbon tanks 6 A and 6 B and the hollow fiber membrane filtration devices 7 A and 7 B, respectively. It is stored in.

次に、中空糸膜濾過装置7Aの濾過液を用いて活性炭槽6Bに含まれる活性炭を洗浄する場合(図17に示す逆洗浄1)には、三方弁V31を活性炭槽6A側に切り替える(活性炭槽6A側を開放し、活性炭槽6B側を閉鎖する)と共に、三方弁V32を活性炭槽6B側に切り替える(活性炭槽6A側を閉鎖し、活性炭槽6B側を開放する)。更に、開閉バルブVを開放すると共に、開閉バルブV,V〜Vを閉鎖し、活性炭槽6A及び中空糸膜濾過装置7Aを飲料用原水が通過して濾過された飲料用濾過水が第2の中継流路52から第1の中継流路51を経由して活性炭槽6Bに含まれる活性炭を洗浄して排液流路53から洗浄水が排出される。 Then, when washing the activated carbon contained in the activated carbon vessel 6B using the filtrate of the hollow fiber membrane filtration system 7A (backwash 1 shown in FIG. 17) switches the three-way valve V 31 in the activated carbon vessel 6A side ( opening the active carbon tank 6A side, the closing of activated carbon vessel 6B side), switches the three-way valve V 32 in the activated carbon vessel 6B side (closing the activated carbon tanks 6A side, releasing the active carbon tank 6B side). Further, the open / close valve V 6 is opened, the open / close valves V 5 , V 7 to V 9 are closed, and the beverage filtered water filtered through the raw water for beverage passing through the activated carbon tank 6 A and the hollow fiber membrane filtration device 7 A. However, the activated carbon contained in the activated carbon tank 6B is washed from the second relay channel 52 via the first relay channel 51, and the washing water is discharged from the drainage channel 53.

次に、中空糸膜濾過装置7Bの濾過液を用いて活性炭槽6Aに含まれる活性炭を洗浄する場合(図17に示す逆洗浄2)には、三方弁V31を活性炭槽6B側に切り替える(活性炭槽6A側を閉鎖し、活性炭槽6B側を開放する)と共に、三方弁V32を活性炭槽6A側に切り替える(活性炭槽6A側を開放し、活性炭槽6B側を閉鎖する)。更に、開閉バルブVを開放すると共に、開閉バルブV〜Vを閉鎖し、活性炭槽6B及び中空糸膜濾過装置7Bを飲料用原水が通過して濾過された飲料用濾過水が第2の中継流路52から第1の中継流路51を経由して活性炭槽6Aに含まれる活性炭を洗浄して排液流路54から洗浄水が排出される。 Then, when washing the activated carbon contained in the activated carbon vessel 6A with the filtrate of the hollow fiber membrane filtration apparatus 7B (backwash 2 shown in FIG. 17) switches the three-way valve V 31 in the activated carbon vessel 6B side ( activated carbon tanks 6A side is closed, while opening the activated carbon vessel 6B side), it switches the three-way valve V 32 in the activated carbon vessel 6A side (opening the active carbon tank 6A side, closing the activated carbon vessel 6B side). Furthermore, the opening and closing valve V 5, the opening and closing valve V 6 ~V 9 is closed and activated carbon vessel 6B and the hollow fiber membrane filtration device 7B to be filtered passes through the raw water for drinking has been drinking filtered water is second The activated carbon contained in the activated carbon tank 6 </ b> A is washed from the relay channel 52 via the first relay channel 51 and the washing water is discharged from the drain channel 54.

次に、中空糸膜濾過装置7Aの濾過液を用いて中空糸膜濾過装置7Bの中空糸濾過膜モジュールの中空糸膜を洗浄する場合(図17に示す逆洗浄3)には、三方弁V31を活性炭槽6A側に切り替える(活性炭槽6A側を開放し、活性炭槽6B側を閉鎖する)と共に、三方弁V32を活性炭槽6A,6Bの両側とも閉鎖し、更に、開閉バルブVを開放すると共に、開閉バルブV〜V,Vを閉鎖し、活性炭槽6A及び中空糸膜濾過装置7Aを飲料用原水が通過して濾過された飲料用濾過水により中空糸膜濾過装置7Bの中空糸濾過膜モジュールの中空糸膜を洗浄して排液流路55から洗浄水が排出される。 Next, when the hollow fiber membrane of the hollow fiber filtration membrane module of the hollow fiber membrane filtration device 7B is washed using the filtrate of the hollow fiber membrane filtration device 7A (backwash 3 shown in FIG. 17), the three-way valve V 31 switch to activated carbon vessel 6A side (opening the active carbon tank 6A side, closing the activated carbon vessel 6B side) with activated carbon vessel 6A the three-way valve V 32, closing both sides of 6B, further, the opening and closing valve V 8 Opening and closing the on-off valves V 5 to V 7 and V 9 , and the hollow fiber membrane filtration device 7B by the filtered water for beverage filtered through the activated carbon tank 6A and the hollow fiber membrane filtration device 7A through the drinking raw water. The hollow fiber membrane of the hollow fiber filtration membrane module is washed, and the washing water is discharged from the drainage channel 55.

次に、中空糸膜濾過装置7Bの濾過液を用いて中空糸膜濾過装置7Aの中空糸濾過膜モジュールの中空糸膜を洗浄する場合(図17に示す逆洗浄4)には、三方弁V31を活性炭槽6B側に切り替える(活性炭槽6A側を閉鎖し、活性炭槽6B側を開放する)と共に、三方弁V32を活性炭槽6A,6Bの両側とも閉鎖し、更に、開閉バルブVを開放すると共に、開閉バルブV,V,V,Vを閉鎖し、活性炭槽6B及び中空糸膜濾過装置7Bを飲料用原水が通過して濾過された飲料用濾過水により中空糸膜濾過装置7Aの中空糸濾過膜モジュールの中空糸膜を洗浄して排液流路56から洗浄水が排出される。 Next, when the hollow fiber membrane of the hollow fiber filtration membrane module of the hollow fiber membrane filtration device 7A is washed using the filtrate of the hollow fiber membrane filtration device 7B (backwash 4 shown in FIG. 17), the three-way valve V 31 (closed activated carbon tanks 6A side, releasing the active carbon tank 6B side) to switch to active carbon tank 6B side with active carbon tank 6A the three-way valve V 32, closing both sides of 6B, further, the opening and closing valve V 7 The open / close valves V 5 , V 6 , V 8 , and V 9 are closed, and the hollow fiber membrane is filtered by the filtered water for beverage filtered through the activated carbon tank 6B and the hollow fiber membrane filtration device 7B. The hollow fiber membrane of the hollow fiber filtration membrane module of the filtration device 7A is washed, and the washing water is discharged from the drainage channel 56.

尚、前記各実施形態では、相互逆洗ユニット50の一例として、活性炭槽6A,6Bと、該活性炭槽6A,6Bよりも下流側にそれぞれ接続された中空糸膜濾過装置7A,7Bとが2組並列に接続された場合について説明したが、他の複数の活性炭槽6と、該活性炭槽6よりも下流側にそれぞれ接続された他の複数の中空糸膜濾過装置7とが他の複数組並列に接続して相互逆洗ユニット50を構成することも出来る。   In each of the above embodiments, as an example of the mutual backwash unit 50, the activated carbon tanks 6A and 6B and the hollow fiber membrane filtration devices 7A and 7B connected downstream of the activated carbon tanks 6A and 6B are each 2 Although the case where the set was connected in parallel was described, the other plural activated carbon tanks 6 and the other plural hollow fiber membrane filtration devices 7 respectively connected to the downstream side of the activated carbon tank 6 are the other plural sets. It is also possible to configure the mutual backwash unit 50 by connecting in parallel.

上記構成によれば、二方弁からなる各開閉バルブV〜Vの開閉操作や各三方弁V31,V32の切替操作により複数の活性炭を含む活性炭槽6と複数の中空糸膜濾過装置7の中空糸濾過膜モジュールとの間で相互逆洗可能な構成としたことで、活性炭や中空糸膜に附着した縣濁物質等を洗浄するための洗浄ポンプや逆洗タンクを不要とし、濾過設備の小型化とコストダウンを図ることが出来る。他の構成は前記各実施形態と同様に構成され、同様の効果を得ることが出来る。 According to the above configuration, the activated carbon tank 6 containing a plurality of activated carbons and the plurality of hollow fiber membrane filtrations by the opening / closing operations of the on-off valves V 1 to V 9 comprising two-way valves and the switching operations of the three-way valves V 31 and V 32. By adopting a configuration capable of mutual backwashing with the hollow fiber filtration membrane module of the device 7, a washing pump and a backwashing tank for washing suspended substances attached to the activated carbon or the hollow fiber membrane are unnecessary, It is possible to reduce the size and cost of the filtration equipment. Other configurations are the same as those in the above embodiments, and the same effects can be obtained.

本発明の活用例として、飲料用原水がカビ臭物質等の有機物を含むために実質的に直接飲用できず、一旦、煮沸等を行ってから飲料用に供される地域に好適な飲料用水濾過システムに適用出来る。   As an example of use of the present invention, since drinking raw water contains organic substances such as mold odor substances, it cannot be drunk directly directly, and once it has been boiled, etc., it is suitable for an area where drinking water is suitable for drinking Applicable to the system.

本発明に係る飲料用水濾過システムの構成を示すフローチャートである。It is a flowchart which shows the structure of the water filtration system for drinks concerning this invention. 中空糸膜濾過装置の開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で相互逆洗を行う様子を示し、(a)は外圧式、(b)は内圧式、(c)は浸漬膜の場合をそれぞれ示す図である。The state in which backwashing is performed between a plurality of hollow fiber filtration membrane modules by opening and closing the open / close valve of the hollow fiber membrane filtration device is shown, (a) is an external pressure type, (b) is an internal pressure type, and (c) is an immersion membrane. FIG. 外圧式で複数の中空糸濾過膜モジュール間で行う相互逆洗中にエアーを供給するエアー供給手段を設けた構成を示す図である。It is a figure which shows the structure which provided the air supply means which supplies air during the mutual backwashing performed between several hollow fiber filtration membrane modules by an external pressure type. 浸漬膜の場合で曝気量を制御する構成を説明する図である。It is a figure explaining the structure which controls the amount of aeration in the case of an immersion film. 浸漬膜の場合で曝気量を制御する構成を説明する図である。It is a figure explaining the structure which controls the amount of aeration in the case of an immersion film. 浸漬膜の場合で曝気量を制御する構成を説明する図である。It is a figure explaining the structure which controls the amount of aeration in the case of an immersion film. 浸漬膜の場合で曝気量を制御する構成を説明する図である。It is a figure explaining the structure which controls the amount of aeration in the case of an immersion film. 浸漬膜の場合で処理槽内を攪拌する構成を説明する図である。It is a figure explaining the structure which stirs the inside of a processing tank in the case of an immersion film. 外圧式中空糸膜濾過装置において開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で直列に接続して中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄を行う様子を示す図である。In the external pressure type hollow fiber membrane filtration device, flushing washing is performed by connecting a plurality of hollow fiber filtration membrane modules in series by opening / closing an on-off valve and flowing the stock solution to the outside of the hollow fiber membrane to wash the hollow fiber membrane. FIG. 外圧式中空糸膜濾過装置において複数の中空糸濾過膜モジュール間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段を設けた構成を示す図である。It is a figure which shows the structure which provided the air supply means which mixes air with the mutual flushing washing | cleaning liquid performed between several hollow fiber filtration membrane modules in an external pressure type hollow fiber membrane filtration apparatus. 内圧式中空糸膜濾過装置において開閉バルブの開閉操作により複数の中空糸濾過膜モジュール間で直列に接続して中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄を行うと共に複数の中空糸濾過膜モジュール間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段を設けた構成を示す図である。In the internal pressure type hollow fiber membrane filtration device, flushing washing is performed in which a plurality of hollow fiber filtration membrane modules are connected in series by opening and closing an open / close valve, and a stock solution is allowed to flow outside the hollow fiber membrane to wash the hollow fiber membrane. It is a figure which shows the structure which provided the air supply means which mixes air with the mutual flushing washing | cleaning liquid performed between several hollow fiber filtration membrane modules. 図1に示す移送ポンプと中間タンクとの間に、活性炭槽と、該活性炭槽よりも下流側にそれぞれ接続された中空糸膜濾過装置とが2組並列に接続された相互逆洗ユニットが接続された場合の一例を示す図である。Connected between the transfer pump and the intermediate tank shown in FIG. 1 is a mutual backwash unit in which two sets of activated carbon tanks and hollow fiber membrane filtration devices connected downstream of the activated carbon tanks are connected in parallel. It is a figure which shows an example at the time of being carried out. 図1に示す第1の中空糸膜濾過装置、オゾン発生器、混合器、排オゾン処理器、反応タンク及び移送ポンプを省略して供給ポンプと中間タンクとの間に、活性炭槽と、該活性炭槽よりも下流側にそれぞれ接続された中空糸膜濾過装置とが2組並列に接続された相互逆洗ユニットが接続された場合の一例を示す図である。The first hollow fiber membrane filtration device, the ozone generator, the mixer, the exhaust ozone processor, the reaction tank, and the transfer pump shown in FIG. 1 are omitted, and the activated carbon tank and the activated carbon are provided between the supply pump and the intermediate tank. It is a figure which shows an example at the time of the mutual backwashing unit connected with 2 sets of hollow fiber membrane filtration apparatuses each connected downstream from the tank in parallel. 活性炭槽と、該活性炭槽よりも下流側にそれぞれ接続された中空糸膜濾過装置とが2組並列に接続された相互逆洗ユニットの構成を示す図である。It is a figure which shows the structure of the mutual backwashing unit in which two sets of activated carbon tanks and the hollow fiber membrane filtration apparatus respectively connected downstream from this activated carbon tank were connected in parallel. 二方弁からなる各開閉バルブの開閉操作により複数の活性炭槽に含まれる活性炭と、複数の中空糸膜濾過装置のそれぞれの中空糸濾過膜モジュールとの間で相互逆洗する様子を説明する図である。The figure explaining a mode that mutual backwashing is carried out between activated carbon contained in a plurality of activated carbon tanks and each hollow fiber filtration membrane module of a plurality of hollow fiber membrane filtration devices by opening and closing operation of each on-off valve which consists of a two-way valve It is. 活性炭槽と、該活性炭槽よりも下流側にそれぞれ接続された中空糸膜濾過装置とが2組並列に接続された他の相互逆洗ユニットの構成を示す図である。It is a figure which shows the structure of the other mutual backwashing unit to which two sets of activated carbon tanks and the hollow fiber membrane filtration apparatus respectively connected downstream from this activated carbon tank were connected in parallel. 二方弁からなる各開閉バルブの開閉操作及び三方弁の切替操作により複数の活性炭槽に含まれる活性炭と、複数の中空糸膜濾過装置のそれぞれの中空糸濾過膜モジュールとの間で相互逆洗する様子を説明する図である。Mutual backwashing between activated carbon contained in a plurality of activated carbon tanks and each hollow fiber filtration membrane module of a plurality of hollow fiber membrane filtration devices by opening and closing each open / close valve composed of a two-way valve and switching operation of a three-way valve It is a figure explaining a mode to do.

符号の説明Explanation of symbols

1…原水タンク
2…供給ポンプ
3…混合器
4…オゾン発生器
5…反応タンク
5a,5b…直列フラッシング管
6,6A,6B…活性炭槽
6a,6b…開閉バルブ
7,7A,7B…第2の中空糸膜濾過装置
8…原水供給ヘッダ管
9a,9b…開閉バルブ
10a,10b…原水供給流路
11…濾過水排出ヘッダ管
12a,12b…濾過水排出流路
13…戻り原水ヘッダ管
14a,14b…開閉バルブ
15a,15b…戻り原水流路
16a,16b…中空糸濾過膜モジュール
17…中間タンク
17a,17b…開閉バルブ
18…開閉バルブ
19…エアー供給ヘッダ管
19a,19b…エアー供給枝管
20…第1の中空糸膜濾過装置
21…移送ポンプ
22…排オゾン処理器
23…次亜塩素酸ナトリウム(NaClO)逆洗器
24…処理槽
25…吸引ポンプ
26a,26b…開閉バルブ
27…逆洗ヘッダ管
28a,28b…開閉バルブ
29a,29b…逆洗流路
30…開閉バルブ
31a,31b…開閉バルブ
41〜43…エアー供給管
41a〜43a…曝気口
44…曝気量制御部
45…中間領域
46…上昇流
47…下降流
48…攪拌機
50…相互逆洗ユニット
51…第1の中継流路
52…第2の中継流路
53〜56…排液流路
V,V〜V…開閉バルブ(二方弁)
31,V32…三方弁
DESCRIPTION OF SYMBOLS 1 ... Raw water tank 2 ... Supply pump 3 ... Mixer 4 ... Ozone generator 5 ... Reaction tank 5a, 5b ... Series flushing pipe 6, 6A, 6B ... Activated carbon tank 6a, 6b ... Open / close valve 7, 7A, 7B ... Second Hollow fiber membrane filtration device 8 ... Raw water supply header tube 9a, 9b ... Open / close valve
10a, 10b ... Raw water supply channel
11 ... filtrated water discharge header pipe
12a, 12b ... Filtrated water discharge channel
13 ... Return raw water header pipe
14a, 14b ... Open / close valve
15a, 15b ... Return raw water flow path
16a, 16b ... Hollow fiber filtration membrane module
17 ... Intermediate tank
17a, 17b ... Open / close valve
18 ... Open / close valve
19 ... Air supply header pipe
19a, 19b ... Air supply branch pipe
20 ... 1st hollow fiber membrane filtration device
21 ... Transfer pump
22 ... Waste ozone treatment device
23 ... Sodium hypochlorite (NaClO) backwasher
24 ... Treatment tank
25… Suction pump
26a, 26b ... Open / close valve
27… Backwash header pipe
28a, 28b ... Open / close valve
29a, 29b ... Backwash flow path
30 ... Open / close valve
31a, 31b ... Open / close valve
41 ~ 43 ... Air supply pipe
41a-43a ... Aeration port
44 ... Aeration control unit
45 ... intermediate area
46 ... Upflow
47 ... Downflow
48 ... Agitator
50 ... Mutual backwash unit
51 ... First relay channel
52 ... Second relay channel
53 to 56 ... drainage flow path V, V 1 to V 9 ... open / close valve (two-way valve)
V 31 , V 32 ... three-way valve

Claims (13)

飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、
前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、
前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置と、
を有し、
前記中空糸膜濾過装置は、原水供給ヘッダ管にそれぞれ開閉バルブを介して原水供給流路が接続され、且つ濾過水排出ヘッダ管にそれぞれ濾過水排出流路が接続されると共に該濾過水排出ヘッダ管に開閉バルブが設けられ、且つ戻り原水ヘッダ管にそれぞれ開閉バルブを介して戻り原水流路が接続された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で相互逆洗可能に構成されたことを特徴とする飲料用水濾過システム。
Ozone supply means for supplying ozone to drinking raw water and oxidizing and decomposing organic substances such as mold odor substances contained in the drinking raw water;
Activated carbon that adsorbs organic matter such as mold odor substances that are oxidatively decomposed by ozone supplied by the ozone supply means;
A hollow fiber membrane filtration device for filtering raw water for drinking on the upstream side of the ozone supply means or the downstream side of the activated carbon through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less;
Have
In the hollow fiber membrane filtration device, the raw water supply flow path is connected to the raw water supply header pipe via an open / close valve, and the filtered water discharge flow path is connected to the filtered water discharge header pipe. A plurality of hollow fiber filtration membrane modules each having a return raw water flow path connected to the return raw water header pipe via an open / close valve, and the plurality of hollow fibers by opening / closing the open / close valve; A drinking water filtration system characterized in that it can be backwashed between filtration membrane modules.
前記複数の中空糸濾過膜モジュール間で行う相互逆洗水にエアーを混合するエアー供給手段を有することを特徴とする請求項1に記載の飲料用水濾過システム。 The drinking water filtration system according to claim 1, further comprising air supply means for mixing air with mutual backwash water performed between the plurality of hollow fiber filtration membrane modules. 飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、
前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、
前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置と、
を有し、
前記中空糸膜濾過装置は、濾過水排出ヘッダ管にそれぞれ開閉バルブを介して濾過水排出流路が接続され、該濾過水排出ヘッダ管が吸引ポンプの吸水口に接続され、該吸引ポンプの排水口に接続された濾過水排出ヘッダ管に開閉バルブが接続され、該濾過水排出ヘッダ管の開閉バルブと前記吸引ポンプとの間から分岐した逆洗ヘッダ管にそれぞれ開閉バルブを介して逆洗流路が接続されると共に該逆洗流路が前記濾過水排出流路の開閉バルブのそれぞれの上流側で連通された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で相互逆洗可能に構成されたことを特徴とする飲料用水濾過システム。
Ozone supply means for supplying ozone to drinking raw water and oxidizing and decomposing organic substances such as mold odor substances contained in the drinking raw water;
Activated carbon that adsorbs organic matter such as mold odor substances that are oxidatively decomposed by ozone supplied by the ozone supply means;
A hollow fiber membrane filtration device for filtering raw water for drinking on the upstream side of the ozone supply means or the downstream side of the activated carbon through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less;
Have
In the hollow fiber membrane filtration device, the filtrate drainage flow path is connected to the filtrate drainage header pipe via an open / close valve, the filtrate drainage header pipe is connected to the water suction port of the suction pump, and the drainage of the suction pump An open / close valve is connected to the filtered water discharge header pipe connected to the opening, and the backwash flow flows through the open / close valve to the backwash header pipe branched from the open / close valve of the filtrate water discharge header pipe and the suction pump. A plurality of hollow fiber filtration membrane modules connected to the upstream side of each of the on-off valves of the filtered water discharge passage, and the plurality of the plurality of hollow fiber filtration membrane modules are connected by opening / closing the on-off valves. A drinking water filtration system characterized in that it can be backwashed between hollow fiber filtration membrane modules.
飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、
前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、
前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置と、
を有し、
前記中空糸膜濾過装置は、処理槽内に浸漬された中空糸膜を透過させて原液を濾過する中空糸膜濾過装置であって、
更に前記中空糸膜濾過装置は、濾過液排出ヘッダ管にそれぞれ開閉バルブを介して濾過液排出流路が接続され、該濾過液排出ヘッダ管が吸引ポンプの吸液口に接続され、該吸引ポンプの排液口に接続された濾過液排出ヘッダ管に開閉バルブが接続され、該濾過液排出ヘッダ管の開閉バルブと前記吸引ポンプとの間から分岐した逆洗ヘッダ管にそれぞれ開閉バルブを介して逆洗流路が接続されると共に該逆洗流路が前記濾過液排出流路の開閉バルブのそれぞれの上流側で連通された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で相互逆洗可能に構成されたことを特徴とする飲料用水濾過システム。
Ozone supply means for supplying ozone to drinking raw water and oxidizing and decomposing organic substances such as mold odor substances contained in the drinking raw water;
Activated carbon that adsorbs organic matter such as mold odor substances that are oxidatively decomposed by ozone supplied by the ozone supply means;
A hollow fiber membrane filtration device for filtering raw water for drinking on the upstream side of the ozone supply means or the downstream side of the activated carbon through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less;
Have
The hollow fiber membrane filtration device is a hollow fiber membrane filtration device that permeates the hollow fiber membrane immersed in the treatment tank and filters the stock solution,
Further, in the hollow fiber membrane filtration device, a filtrate discharge flow path is connected to the filtrate discharge header pipe via an on-off valve, and the filtrate discharge header pipe is connected to a liquid suction port of a suction pump. An open / close valve is connected to the filtrate discharge header pipe connected to the drainage port of the filter, and the backwash header pipe branched from between the open / close valve of the filtrate discharge header pipe and the suction pump is connected via the open / close valve, respectively. A backwash flow path is connected and the backwash flow path is composed of a plurality of hollow fiber filtration membrane modules communicated with each upstream side of the on-off valve of the filtrate discharge flow path. A drinking water filtration system characterized in that it can be backwashed between the plurality of hollow fiber filtration membrane modules.
前記処理槽内にエアー供給手段を設け、前記複数の中空糸濾過膜モジュール間で相互逆洗する際に前記エアー供給手段によるエアーの曝気量を増加させる曝気量制御手段を有することを特徴とする請求項4に記載の飲料用水濾過システム。 An air supply means is provided in the treatment tank, and has an aeration amount control means for increasing the amount of air aeration by the air supply means when backwashing between the plurality of hollow fiber filtration membrane modules. The drinking water filtration system according to claim 4. 前記曝気量制御手段は、前記処理槽内に浸漬された複数の中空糸濾過膜モジュール全体に対して前記エアー供給手段によるエアーの曝気量を増加させることを特徴とする請求項5に記載の飲料用水濾過システム。 The beverage according to claim 5, wherein the aeration amount control means increases the aeration amount of air by the air supply means with respect to the whole of the plurality of hollow fiber filtration membrane modules immersed in the treatment tank. Water filtration system. 前記曝気量制御手段は、前記処理槽内に浸漬された複数の中空糸濾過膜モジュールのうち逆洗中の中空糸濾過膜モジュールに対してのみ前記エアー供給手段によるエアーの曝気量を増加させることを特徴とする請求項5に記載の飲料用水濾過システム。 The aeration amount control means increases the aeration amount of air by the air supply means only for the hollow fiber filtration membrane module being backwashed among the plurality of hollow fiber filtration membrane modules immersed in the treatment tank. The water filtration system for drinks according to claim 5 characterized by things. 前記曝気量制御手段は、前記処理槽内に浸漬された複数の中空糸濾過膜モジュールのうち、逆洗中の中空糸濾過膜モジュールと、濾過中の中空糸濾過膜モジュールとの間に形成される領域に対して前記エアー供給手段によるエアーの曝気量を増加させることを特徴とする請求項5に記載の飲料用水濾過システム。 The aeration amount control means is formed between a hollow fiber filtration membrane module being backwashed and a hollow fiber filtration membrane module being filtered out of a plurality of hollow fiber filtration membrane modules immersed in the treatment tank. The drinking water filtration system according to claim 5, wherein an aeration amount of air by the air supply unit is increased with respect to a region to be drinkable. 前記処理槽内に攪拌手段を設け、前記複数の中空糸濾過膜モジュール間で相互逆洗する際に前記攪拌手段により該処理槽内の液を攪拌することを特徴とする請求項4に記載の飲料用水濾過システム。 The agitation means is provided in the treatment tank, and the liquid in the treatment tank is agitated by the agitation means when the plurality of hollow fiber filtration membrane modules are back-washed with each other. Drinking water filtration system. 飲料用原水にオゾンを供給して該飲料用原水中に含まれるカビ臭物質等の有機物を酸化分解するオゾン供給手段と、
前記オゾン供給手段により供給されたオゾンにより酸化分解されたカビ臭物質等の有機物を吸着する活性炭と、
前記オゾン供給手段よりも上流側または前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置と、
を有し、
前記中空糸膜濾過装置は、外装ケース内に収容された中空糸膜を透過させて原液を濾過する中空糸膜濾過装置であって、
更に前記中空糸膜濾過装置は、原液供給ヘッダ管にそれぞれ開閉バルブを介して原液供給流路が接続され、且つ濾過液排出ヘッダ管にそれぞれ濾過液排出流路が接続されると共に該濾過液排出ヘッダ管に開閉バルブが設けられ、且つ戻り原液ヘッダ管にそれぞれ開閉バルブを介して戻り原液流路が接続され、且つ一方の前記戻り原液流路と他方の前記原液供給流路とがそれぞれ開閉バルブを介して接続された複数の中空糸濾過膜モジュールからなり、前記開閉バルブの開閉操作により該複数の中空糸濾過膜モジュール間で直列に接続して前記中空糸膜の外側に原液を流して該中空糸膜を洗浄するフラッシング洗浄が可能に構成されたことを特徴とする飲料用水濾過システム。
Ozone supply means for supplying ozone to drinking raw water and oxidizing and decomposing organic substances such as mold odor substances contained in the drinking raw water;
Activated carbon that adsorbs organic matter such as mold odor substances that are oxidatively decomposed by ozone supplied by the ozone supply means;
A hollow fiber membrane filtration device for filtering raw water for drinking on the upstream side of the ozone supply means or the downstream side of the activated carbon through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less;
Have
The hollow fiber membrane filtration device is a hollow fiber membrane filtration device that permeates a hollow fiber membrane housed in an outer case and filters a stock solution,
Further, in the hollow fiber membrane filtration device, the stock solution supply flow path is connected to the stock solution supply header pipe via an open / close valve, and the filtrate discharge flow path is connected to the filtrate discharge header pipe, and the filtrate discharge An opening / closing valve is provided in the header pipe, and a return stock solution flow path is connected to the return stock solution header pipe via the opening / closing valve, respectively, and one of the return stock solution flow path and the other of the stock solution supply flow path are open / close valves, respectively. A plurality of hollow fiber filtration membrane modules connected through a plurality of hollow fiber filtration membrane modules connected in series between the plurality of hollow fiber filtration membrane modules by opening and closing the open / close valve to flow a stock solution to the outside of the hollow fiber membranes. A drinking water filtration system characterized in that it can be flushed and washed to wash a hollow fiber membrane.
前記複数の中空糸濾過膜モジュール間で行う相互フラッシング洗浄液にエアーを混合するエアー供給手段を有することを特徴とする請求項10に記載の飲料用水濾過システム。 The beverage water filtration system according to claim 10, further comprising an air supply unit that mixes air with a mutual flushing cleaning liquid performed between the plurality of hollow fiber filtration membrane modules. 飲料用原水中に含まれるカビ臭物質等の有機物を吸着する活性炭と、
前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置と、
が複数組並列に接続され、
前記各活性炭のそれぞれの下流側と、前記各中空糸膜濾過装置のそれぞれの上流側とを一同に接続する第1の中継流路と、
前記各中空糸膜濾過装置のそれぞれの下流側と、前記第1の中継流路とを一同に接続する第2の中継流路と、
を有し、
前記各活性炭の上流側にそれぞれ設けられた第1の開閉バルブと、前記第1の中継流路上で前記第2の中継流路が接続される部位の両側にそれぞれ設けられた第2の開閉バルブと、前記各中空糸膜濾過装置の下流側と前記第2の中継流路とが接続される部位の下流側に設けられた第3の開閉バルブと、の開閉操作により該複数の活性炭と前記複数の中空糸膜濾過装置の中空糸濾過膜モジュールとの間で相互逆洗可能に構成されたことを特徴とする飲料用水濾過システム。
Activated carbon that adsorbs organic matter such as musty odor substances contained in raw drinking water;
A hollow fiber membrane filtration device that filters raw water for drinking on the downstream side of the activated carbon through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less;
Are connected in parallel,
A first relay flow path that connects the downstream side of each activated carbon and the upstream side of each hollow fiber membrane filtration device together,
A second relay flow path for connecting the respective downstream sides of the hollow fiber membrane filtration devices and the first relay flow path together,
Have
A first on-off valve provided on the upstream side of each activated carbon, and a second on-off valve provided on both sides of a portion where the second relay channel is connected on the first relay channel And a plurality of activated carbons by the opening and closing operation of a third on-off valve provided on the downstream side of the site where the downstream side of each hollow fiber membrane filtration device and the second relay flow path are connected A drinking water filtration system characterized in that it can be backwashed with a hollow fiber filtration membrane module of a plurality of hollow fiber membrane filtration devices.
飲料用原水中に含まれるカビ臭物質等の有機物を吸着する活性炭と、
前記活性炭よりも下流側における飲料用原水を平均孔径0.001μm以上且つ1μm以下の中空糸膜を透過させて濾過する中空糸膜濾過装置と、
が複数組並列に接続され、
前記各活性炭のそれぞれの下流側と、前記各中空糸膜濾過装置のそれぞれの上流側とを一同に接続する第1の中継流路と、
前記各中空糸膜濾過装置のそれぞれの下流側と、前記第1の中継流路とを一同に接続する第2の中継流路と、
を有し、
前記各活性炭の上流側に設けられた第1の三方弁と、前記第1の中継流路上で前記第2の中継流路が接続される部位に設けられた第2の三方弁と、前記各中空糸膜濾過装置の下流側と前記第2の中継流路とが接続される部位の下流側に設けられた開閉バルブと、の開閉操作及び切替操作により該複数の活性炭と前記複数の中空糸膜濾過装置の中空糸濾過膜モジュールとの間で相互逆洗可能に構成されたことを特徴とする飲料用水濾過システム。
Activated carbon that adsorbs organic matter such as musty odor substances contained in raw drinking water;
A hollow fiber membrane filtration device that filters raw water for drinking on the downstream side of the activated carbon through a hollow fiber membrane having an average pore diameter of 0.001 μm or more and 1 μm or less;
Are connected in parallel,
A first relay flow path that connects the downstream side of each activated carbon and the upstream side of each hollow fiber membrane filtration device together,
A second relay flow path for connecting the respective downstream sides of the hollow fiber membrane filtration devices and the first relay flow path together,
Have
A first three-way valve provided on the upstream side of each activated carbon; a second three-way valve provided on a portion of the first relay channel connected to the second relay channel; The plurality of activated carbons and the plurality of hollow fibers by an opening / closing operation and a switching operation of an opening / closing valve provided on the downstream side of a portion where the downstream side of the hollow fiber membrane filtration device and the second relay channel are connected A drinking water filtration system characterized in that it can be back-washed with a hollow fiber filtration membrane module of a membrane filtration device.
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