JP2000218138A - Heating type membrane filter equipment - Google Patents
Heating type membrane filter equipmentInfo
- Publication number
- JP2000218138A JP2000218138A JP2023699A JP2023699A JP2000218138A JP 2000218138 A JP2000218138 A JP 2000218138A JP 2023699 A JP2023699 A JP 2023699A JP 2023699 A JP2023699 A JP 2023699A JP 2000218138 A JP2000218138 A JP 2000218138A
- Authority
- JP
- Japan
- Prior art keywords
- membrane filtration
- water
- heating
- membrane
- filtration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、加熱式膜濾過設備
に係り、特に、水道水の浄水場、バイオ産業、医・薬関
連設備から排出される感染性原虫類や有害微生物を含有
する汚水を処理して水を放流可能とし、かつ除去した固
形物をそのまま廃棄処分することのできる加熱式膜濾過
設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating type membrane filtration equipment, and more particularly to a wastewater containing infectious protozoa and harmful microorganisms discharged from a tap water purification plant, a biotechnology industry, and a medical / pharmaceutical equipment. The present invention relates to a heated membrane filtration facility capable of treating water and allowing water to be discharged, and capable of directly discarding the removed solid matter.
【０００２】[0002]
【従来の技術】凝集沈殿処理、砂濾過処理、塩素消毒処
理等から構成された通常の浄水製造設備は、沈殿汚泥を
含有する汚水や、砂濾過槽を洗浄した洗浄汚水等の汚水
が発生する。そして、浄水能力が１００００ｍ3 ／日以
上の浄水製造設備から排出される汚水については、環境
への配慮から水質汚濁防止法による排水規制の対象とな
っている。この為、汚水は、天日乾燥や機械脱水で脱水
された後の固形物を埋め立てや盛土などで処分してい
る。2. Description of the Related Art A conventional water purification plant comprising a coagulating sedimentation treatment, a sand filtration treatment, a chlorine disinfection treatment and the like generates wastewater such as wastewater containing sedimentation sludge and washing wastewater obtained by washing a sand filtration tank. . Sewage discharged from a water purification plant having a water purification capacity of 10,000 m 3 / day or more is subject to drainage regulation by the Water Pollution Prevention Law in consideration of the environment. For this reason, sewage is disposed of by reclaiming or embanking solids that have been dehydrated by solar drying or mechanical dehydration.
【０００３】また、簡易水道向けの膜を用いた新しい浄
水製造設備が、厚生省大型プロジェクト「ＭＣＡ２１計
画」の中で開発され、実設備も稼働している。ところ
で、近年、塩素による消毒処理に対して耐性を有する感
染性原虫類であるクリプトスポリジウムによる水道原水
の汚染問題が多くの国々で注目されてきている。In addition, a new water purification plant using a membrane for a simple water supply has been developed in the Ministry of Health and Welfare's large-scale project "MCA21 Project", and actual facilities are in operation. By the way, in recent years, the problem of contamination of tap water by cryptosporidium, which is an infectious protozoa that is resistant to disinfection treatment with chlorine, has attracted attention in many countries.
【０００４】クリプトスポリジウムとは、原生動物の原
虫類に属する水系病原性生物で、そのオーシスト（嚢包
体）は球形で３〜４μｍといわれている。このオーシス
トは、経口摂取により体内に入り、腸粘膜の微絨毛の中
に寄生して増殖し、下痢などの症状を引き起こす。クリ
プトスポリジウムは、塩素に対する耐性が高く、８０ｍ
ｇ／Ｌの遊離塩素に９０分接触させなければ９０％不活
性化することができないといわれている。この耐性レベ
ルは、大腸菌の２４万倍の塩素抵抗性に相当するので、
一般の浄水場で実施されている遊離塩素による消毒方法
では効果が期待できない。また、オゾンにより不活性化
する場合には、１ｍｇ／Ｌのオゾンに５分間接触させれ
ばよいといわれている。しかし、様々な物質が混在する
水道原水を処理する実際の浄水製造設備では、原水中に
注入したオゾンはクリプトスポリジウムの殺菌以外に有
機物等の酸化により消費されるので、クリプトスポリジ
ウムを確実に殺菌することが難しい。ちなみに、感染性
原虫類としては、クリプトスポリジウムの他にジアルデ
ィア、エキノコッカス等がある。[0004] Cryptosporidium is an aquatic pathogenic organism belonging to the protozoan protozoa, and its oocyst (capsule) is said to be spherical and 3 to 4 µm in size. The oocysts enter the body by oral ingestion, parasitize and grow in microvilli of the intestinal mucosa, and cause symptoms such as diarrhea. Cryptosporidium is highly resistant to chlorine,
It is said that 90% inactivation cannot be achieved without contact with g / L free chlorine for 90 minutes. This level of resistance is equivalent to 240,000 times the chlorine resistance of E. coli,
The effect cannot be expected by the disinfection method using free chlorine that is implemented in general water purification plants. It is also said that when inactivated by ozone, it may be brought into contact with 1 mg / L of ozone for 5 minutes. However, in an actual water purification plant that treats tap water containing various substances, ozone injected into the raw water is consumed by oxidation of organic substances and the like in addition to sterilization of cryptosporidium, so that cryptosporidium is surely sterilized. It is difficult. Incidentally, infectious protozoa include Giardia, Echinococcus, etc. in addition to Cryptosporidium.
【０００５】このような背景から、厚生省は、「水道水
中のクリプトスポリジウムに関する対策の実施につい
て」（衛水第２４８号、平成８年１０月４日）におい
て、暫定対策指針を定め、水道事業者、水道用水供給事
業者及び専用水道の設置者に対策が周知徹底できるよう
に通知を出している。このなかで、浄水製造の際の徹底
事項として「砂濾過出口の水の濁度を常時把握し、砂濾
過出口の濁度を０．１度以下に維持する」ために、目詰
まりの発生がなくても砂濾過池を定期的に洗浄する等の
対策をあげている。即ち、凝集沈殿処理や砂濾過処理を
行う浄水製造設備の場合、砂濾過池の濾過管理を安定し
て行うことにより、濾過水中にクリプトスポリジウムが
検出される恐れを少なくさせることができる。一方、膜
を用いた浄水製造設備の場合、使用される膜の孔径がク
リプトスポリジウムのオーシストより１オーダ以上小さ
いため、オーシストは膜により除去される。[0005] Against this background, the Ministry of Health and Welfare has established provisional countermeasures guidelines in "Regarding Implementation of Measures Regarding Cryptosporidium in Tap Water" (No. 248, October 4, 1996). In addition, a notice has been issued so that the measures can be thoroughly communicated to the water service provider and the private water installer. Among them, as a thorough matter at the time of water purification production, clogging occurs because "the turbidity of the water at the sand filtration outlet is constantly monitored and the turbidity of the sand filtration outlet is kept at 0.1 degrees or less". Even if no such measures are taken, measures such as periodically cleaning the sand filtration pond are given. That is, in the case of a purified water production facility that performs a coagulation sedimentation treatment or a sand filtration treatment, the risk of Cryptosporidium being detected in the filtered water can be reduced by stably performing the filtration management of the sand filtration pond. On the other hand, in the case of a water purification plant using a membrane, the oocyst is removed by the membrane because the pore diameter of the membrane used is at least one order of magnitude smaller than the oocyst of Cryptosporidium.
【０００６】このように、砂濾過処理の管理の徹底や膜
濾過を用いることにより、砂濾過水中や膜濾過水中にク
リプトスポリジウムのオーシストが残存するのを防止す
ることは可能である。As described above, it is possible to prevent the oocysts of Cryptosporidium from remaining in sand filtration water or membrane filtration water by thoroughly controlling the sand filtration treatment and using membrane filtration.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、原水が
感染性原虫類等で汚染されている場合には、凝集沈殿処
理により発生する汚泥を含有する汚水中、砂濾過材を洗
浄した洗浄汚水中、或いは膜濾過により濃縮された濃縮
液中に不活性化していない感染性原虫類が濃縮された状
態で残存する。従って、このような汚水は、天日乾燥や
薬品の処理により不活性化してからでないと処分できな
いという問題がある。天日乾燥は、安価な方法ではある
が、広い敷地面積を必要とし、高温多湿な地域や時期に
よっては十分な処理が行えないため根本的な解決にはな
らない。同様に、簡易水道向けの膜を用いた新しい浄水
製造設備の膜濾過装置を洗浄した洗浄汚水についても感
染性原虫類を含む可能性があり、不活性化する手段を備
えることが望まれている。However, when the raw water is contaminated with infectious protozoa, etc., the wastewater containing the sludge generated by the coagulation sedimentation treatment, the washing wastewater obtained by washing the sand filter material, Alternatively, the non-inactivated infectious protozoa remain in a concentrated state in the concentrated solution concentrated by membrane filtration. Therefore, there is a problem that such sewage can be disposed only after being inactivated by solar drying or chemical treatment. Although solar drying is an inexpensive method, it requires a large site area and does not provide a sufficient solution depending on the hot and humid area or season, and is not a fundamental solution. Similarly, the cleaning sewage obtained by washing the membrane filtration device of a new water purification facility using a membrane for simple water supply may contain infectious protozoa, and it is desired to provide a means for inactivating the sewage. .
【０００８】また、このような汚水を濃縮した濃縮液の
最終処分に当たっては、減容化しないと処分費用が嵩む
という問題がある。本発明は、このような事情に鑑みて
なされたもので、感染性原虫類等の微生物を含有する汚
水を安全且つ確実に処理することができると共に、最終
処分される汚水の減容化をも図ることのできる加熱式膜
濾過設備を提供することを目的とする。In the final disposal of the concentrated liquid obtained by concentrating such wastewater, there is a problem that the disposal cost increases unless the volume is reduced. The present invention has been made in view of such circumstances, and it is possible to safely and reliably treat wastewater containing microorganisms such as infectious protozoa and to reduce the volume of wastewater to be finally disposed. It is an object of the present invention to provide a heating type membrane filtration equipment which can be achieved.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するため
に本発明の請求項１では、微生物を含む汚水を濾過する
設備において、前記汚水を前記微生物が死滅する温度で
加熱しながら膜濾過して濾過液と濃縮液とに分離する膜
濾過装置と、前記膜濾過装置から回収した廃熱を前記濃
縮液を加熱乾燥する熱源の少なくとも１部に利用する乾
燥装置と、から成ることを特徴とする。According to a first aspect of the present invention, there is provided a facility for filtering wastewater containing microorganisms, wherein the wastewater is subjected to membrane filtration while heating the wastewater at a temperature at which the microorganisms die. And a drying device that uses waste heat recovered from the membrane filtration device as at least part of a heat source for heating and drying the concentrated solution. I do.
【００１０】本発明の請求項１によれば、膜濾過装置で
濾過する汚水を加熱して汚水中の微生物を殺菌するよう
にしたので、感染性原虫類等の微生物を含有する汚水を
安全且つ確実に処理することができると共に、汚水を加
熱して濾過効率を上げることができる。しかも、膜濾過
装置の廃熱を利用した乾燥装置を、膜濾過装置に組み込
んで濃縮液を乾燥するようにしたので、省エネを図るこ
とができると共に、濃縮された固体の処理が極めて容易
になる。According to the first aspect of the present invention, the sewage to be filtered by the membrane filtration device is heated to sterilize microorganisms in the sewage, so that sewage containing microorganisms such as infectious protozoa can be safely and satisfactorily removed. The treatment can be surely performed, and the filtration efficiency can be increased by heating the sewage. In addition, since the drying device utilizing waste heat of the membrane filtration device is incorporated into the membrane filtration device to dry the concentrated liquid, energy can be saved and the treatment of the concentrated solid becomes extremely easy. .
【００１１】本発明の請求項２によれば、請求項１の膜
濾過装置として回転平膜濾過装置を使用するので、濃縮
液の濃縮倍率を高めることができる。この場合、中空回
転軸に膜濾過部材を複数並設したもの同士を、膜濾過部
材が交差するようにして回転させると、膜面の濃度勾配
を強制的に低下させることができる。従って、濾過性能
を向上させることができるので、濃縮液の濃縮倍率を一
層高めることができる。中空糸膜濾過装置や平膜濾過装
置の場合、濃縮液の含水率を９８％以下にすることは難
しいが、回転平膜濾過装置ならば９０％以下にすること
は可能である。そして、９０％以下の濃縮液は汚泥状で
粘調性があるので、乾燥装置のベルトコンベアでも容易
に移送されて乾燥される。濃縮液を乾燥した乾燥汚泥の
含水率を６５％以下にすれば、そのまま廃棄処分するこ
とができる。According to the second aspect of the present invention, since the rotary flat membrane filtration apparatus is used as the membrane filtration apparatus of the first aspect, the concentration ratio of the concentrated solution can be increased. In this case, when a plurality of membrane filtration members arranged side by side on a hollow rotary shaft are rotated such that the membrane filtration members intersect, the concentration gradient on the membrane surface can be forcibly reduced. Therefore, since the filtration performance can be improved, the concentration ratio of the concentrated liquid can be further increased. In the case of a hollow fiber membrane filtration device or a flat membrane filtration device, it is difficult to reduce the water content of the concentrated solution to 98% or less, but it is possible to reduce the moisture content to 90% or less in the case of a rotary flat membrane filtration device. Since the concentrated liquid of 90% or less is sludge-like and has viscous properties, it is easily transferred and dried even on a belt conveyor of a drying device. If the moisture content of the dried sludge obtained by drying the concentrated liquid is set to 65% or less, the sludge can be directly discarded.
【００１２】前記目的を達成するために本発明の請求項
３では、感染性原虫類含有汚水を膜濾過して１段目の濾
過液と濃縮液とに分離する第１の膜濾過装置と、前記第
１の膜濾過装置からの濃縮液を６０°Ｃ以上の温度に加
熱して膜濾過して２段目の濾過液と濃縮液とに分離する
第２の膜濾過装置と、前記２段目の膜濾過装置から回収
した廃熱を、前記２段目の濃縮液を加熱乾燥する熱源の
少なくとも１部に利用する乾燥装置と、から成ることを
特徴とする。[0012] In order to achieve the above object, the present invention provides a first membrane filtration device for separating an infectious protozoan-containing wastewater into a first-stage filtrate and a concentrated solution by membrane filtration. A second membrane filtration device that heats the concentrated liquid from the first membrane filtration device to a temperature of 60 ° C. or more and performs membrane filtration to separate the filtrate into a second-stage filtrate and a concentrated solution; A drying device that uses the waste heat recovered from the membrane filtration device of the eye as at least one part of a heat source for heating and drying the second-stage concentrated liquid.
【００１３】本発明の請求項３によれば、感染性原虫類
含有汚水を第１の膜濾過装置で濃縮した後の１段目の濃
縮液について、２段目の膜濾過装置で６０°Ｃ以上の温
度に加熱して膜濾過するようにした。これにより、加熱
しなければならない対象水の量を減らせるので、省エネ
になる。また、１段目の濾過水には感染性原虫類は移行
せず、ＣＯＤ成分や色度成分もカットされるので濾過水
を使用する上で問題ない。更に、第２の膜濾過装置の廃
熱を利用した乾燥装置を、膜濾過装置に組み込んで、２
段目の濃縮液について加熱乾燥するようにしたので、乾
燥装置での乾燥エネルギーも削減できる。本発明の請求
項４では、特に、感染性原虫類含有の可能性の高い凝集
沈殿槽から発生する汚泥含有汚水及び／又は砂濾過槽の
洗浄汚水にも適用するようにした。According to the third aspect of the present invention, the concentrated liquid of the first stage after the contaminated sewage containing infectious protozoa is concentrated by the first membrane filtration device is subjected to 60 ° C. by the second membrane filtration device. The membrane was filtered by heating to the above temperature. This reduces the amount of target water that must be heated, thus saving energy. In addition, since the infectious protozoa do not migrate to the first-stage filtered water and the COD component and the chromaticity component are also cut, there is no problem in using the filtered water. Further, a drying device utilizing waste heat of the second membrane filtration device is incorporated in the membrane filtration device, and
Since the concentrated liquid in the second stage is heated and dried, the drying energy in the drying device can be reduced. In claim 4 of the present invention, the present invention is particularly applied to sludge-containing sewage generated from a coagulation sedimentation tank likely to contain infectious protozoa and / or washing sewage of a sand filtration tank.
【００１４】[0014]
【発明の実施の形態】以下添付図面に従って本発明の加
熱式膜濾過設備の好ましい実施の形態について詳説す
る。図１は、本発明に係る加熱式膜濾過設備の第１の実
施の形態を説明する断面図で、膜濾過装置として回転平
膜濾過装置を使用した場合である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the heating type membrane filtration equipment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view illustrating a first embodiment of a heated membrane filtration apparatus according to the present invention, in which a rotary flat membrane filtration apparatus is used as a membrane filtration apparatus.
【００１５】図１に示すように、加熱式膜濾過設備１０
は、回転平膜濾過装置１２と、回転平膜濾過装置１２で
膜濾過される汚水を加熱する加熱手段１４と、回転平膜
濾過装置１２で濃縮された濃縮液を乾燥する乾燥装置１
６とで構成される。回転平膜濾過装置１２は、濾過容器
１８内に複数の中空回転軸２０、２０、２０が回転自在
に支持されると共に、各中空回転軸２０の一端側が図示
しない回転駆動源にそれぞれ接続される。各中空回転軸
２０の他端側は集水管２２に連結され、集水管２２が吸
引ポンプ２３に接続される。中空回転軸２０にはその軸
方向に所定間隔を置いて耐熱性の濾過膜２４Ａを備えた
円板状の膜濾過部材２４、２４…が支持される。耐熱性
の濾過膜２４Ａとしては、ステンレス製の金属膜、セラ
ミックス膜の他に耐熱性の有機膜を使用することができ
る。金属膜やセラミックス膜の場合には膜の孔径は０．
１〜０．５μｍ、有機膜の場合には０．５μｍ以下であ
ることが好ましい。この回転平膜濾過装置１２の構成に
おいて、回転駆動源と吸引ポンプ２３を作動させると回
転する膜濾過部材２４内が負圧になるので、濾過容器１
８内に供給された汚水は、濾過膜２４Ａで吸引濾過され
る。濾過膜２４Ａで濾過された透過水は、膜濾過部材２
４内に導かれた後、中空回転軸２０に穿設された通水孔
を通って中空回転軸２０内に流れ、集水管２２に集水さ
れる。この場合、図１に示すように、異なる中空回転軸
２０の膜濾過部材２４同士を交互にオーバーラップさ
せ、回転駆動源の作動によって中空回転軸２０を回転さ
せると、オーバラップ部分で汚水の乱流が発生するの
で、膜面の濃度勾配を強制的に低下させることができ
る。従って、濾過性能を向上させることができるので、
濃縮液の濃縮倍率を一層高めることができる。[0015] As shown in FIG.
Is a rotary flat membrane filtration device 12, a heating means 14 for heating sewage filtered by the rotary flat membrane filtration device 12, and a drying device 1 for drying the concentrated liquid concentrated by the rotary flat membrane filtration device 12.
6. In the rotary flat membrane filtration device 12, a plurality of hollow rotary shafts 20, 20, 20 are rotatably supported in a filter vessel 18, and one end of each hollow rotary shaft 20 is connected to a rotary drive source (not shown). . The other end of each hollow rotary shaft 20 is connected to a water collecting pipe 22, and the water collecting pipe 22 is connected to a suction pump 23. The hollow rotary shaft 20 supports, at predetermined intervals in the axial direction thereof, disk-shaped membrane filtration members 24 having a heat-resistant filtration membrane 24A. As the heat-resistant filtration membrane 24A, a heat-resistant organic film can be used in addition to a stainless steel metal film and a ceramic film. In the case of a metal film or a ceramic film, the pore size of the film is 0.
The thickness is preferably 1 to 0.5 μm, and in the case of an organic film, 0.5 μm or less. In the configuration of the rotary flat membrane filtration device 12, when the rotation drive source and the suction pump 23 are operated, the inside of the rotating membrane filtration member 24 becomes negative pressure.
The sewage supplied into 8 is suction-filtered by the filtration membrane 24A. The permeated water filtered by the filtration membrane 24A is supplied to the membrane filtration member 2
After being guided into the inside 4, the water flows through the water hole formed in the hollow rotary shaft 20 into the hollow rotary shaft 20, and is collected in the water collecting pipe 22. In this case, as shown in FIG. 1, when the membrane filtration members 24 of different hollow rotary shafts 20 are alternately overlapped, and the hollow rotary shaft 20 is rotated by the operation of the rotary drive source, turbulent water is turbulent at the overlapped portion. Since a flow is generated, the concentration gradient on the film surface can be forcibly reduced. Therefore, since the filtration performance can be improved,
The concentration ratio of the concentrated liquid can be further increased.
【００１６】濾過容器１８の底板には、膜濾過により濃
縮された汚泥状の濃縮液を排出する排泥管２６の一端が
接続され、排泥管２６の他端が乾燥装置１６に延設され
る。排泥管２６には開閉バルブ２７が設けられ、乾燥装
置１６に送られる濃縮液の排出量の調整を行う。濾過容
器１８の上板にはジョイント３０を介して排気管３２の
一端が接続され、排気管３２の他端が乾燥装置１６の後
記する温風吹出管３４に接続される。そして、排気管３
２には送風機３６が設けられると共に、加熱ヒータ３３
が設けられる。The bottom plate of the filtration vessel 18 is connected to one end of a sludge pipe 26 for discharging sludge-like concentrate concentrated by membrane filtration, and the other end of the sludge pipe 26 is extended to the drying device 16. You. An opening / closing valve 27 is provided in the drainage pipe 26 to adjust the discharge amount of the concentrated liquid sent to the drying device 16. One end of an exhaust pipe 32 is connected to the upper plate of the filtration container 18 via a joint 30, and the other end of the exhaust pipe 32 is connected to a hot air blowing pipe 34 described later of the drying device 16. And the exhaust pipe 3
2 is provided with a blower 36 and a heater 33
Is provided.
【００１７】加熱手段１４は、主として、濾過容器１８
内の底板近傍に配設された加熱管３８、加熱管３８に加
熱空気、燃焼排ガス或いは過熱蒸気等の加熱媒体を送る
配管４０とで構成される。そして、濾過容器１８内に供
給された汚水中に加熱管３８から例えば加熱空気が曝気
され、汚水を６０°Ｃ以上に加熱する。加熱源として、
ボイラーの温かい排ガスを使用すると廃熱利用になる。
また、蒸気を汚水に直接吹き込むこともできる。The heating means 14 mainly comprises a filtration vessel 18
And a pipe 40 for sending a heating medium such as heated air, combustion exhaust gas or superheated steam to the heating pipe 38. Then, for example, heated air is aerated from the heating pipe 38 into the sewage supplied into the filtration container 18 to heat the sewage to 60 ° C. or more. As a heating source,
The use of warm exhaust gas from boilers results in waste heat utilization.
In addition, steam can be directly blown into wastewater.
【００１８】乾燥装置１６は、主として、ケーシング４
２内に設けられたベルトコンベア４４と、ベルトコンベ
ア４４上で移送される汚泥状の濃縮液に温風を吹きつけ
て濃縮液を加熱乾燥する温風吹出管３４及び熱交換器３
５とで構成される。ベルトコンベア４４は、離間された
一対の駆動プーリ４６と従動プーリ４８との間に、多数
の小孔が形成された無端状のベルト５０が懸け渡され
る。ベルトコンベア４４の上流端に、回転平膜濾過装置
１２の排泥管２６の出口が配置され、下流端には乾燥し
た乾燥汚泥を回収する回収容器５２が配設される。温風
吹出管３４は、ベルト５０の上面と下面の間にベルト５
０の移動方向に沿って複数本配設され、これらの温風吹
出管３４に回転平膜濾過装置１２からの排気管３２が接
続される。これにより、排気管３２の送風機３６及びヒ
ータ３３を作動させると、汚水を加熱して濾過容器１８
内のヘッドスペース５４に溜まった温かい空気は、ヒー
タ３３で高い温度に加熱された状態で排気管３２を介し
て乾燥装置１６の温風吹出管３４に送られ、ベルト５０
の上面側に向かって吹き出される。更に、乾燥装置１６
に設けられた熱交換器３５は、回転平膜濾過装置１２の
集水管２２と連結管３７を介して連結される。これによ
り、熱交換器３５内には、温かい濾過水が流れ、乾燥装
置１６内を温める。従って、ベルトコンベア４４により
移送される濃縮液は、温風吹出管３４と熱交換器３５に
より効率的に加熱乾燥されると共に、回転平膜濾過装置
１２から回収した廃熱を利用しているので省エネにな
る。The drying device 16 mainly includes the casing 4
2, a hot air blowing pipe 34 for blowing hot air to the sludge-like concentrated liquid transferred on the belt conveyor 44 to heat and dry the concentrated liquid, and a heat exchanger 3
And 5. In the belt conveyor 44, an endless belt 50 having a large number of small holes is suspended between a pair of drive pulleys 46 and a driven pulley 48 which are separated from each other. The outlet of the sludge pipe 26 of the rotary flat membrane filtration device 12 is arranged at the upstream end of the belt conveyor 44, and a collection container 52 for collecting dried and dried sludge is arranged at the downstream end. The warm air outlet pipe 34 is provided between the upper and lower surfaces of the belt 50 so that the belt 5
A plurality of the hot air blow-out tubes 34 are connected to the exhaust pipe 32 from the rotary flat membrane filtration device 12. Thereby, when the blower 36 and the heater 33 of the exhaust pipe 32 are operated, the sewage is heated and the filtration container 18 is heated.
The warm air accumulated in the head space 54 in the inside is sent to the hot air blowing pipe 34 of the drying device 16 via the exhaust pipe 32 while being heated to a high temperature by the heater 33, and the belt 50 is heated.
Is blown out toward the upper surface side. Further, the drying device 16
Is connected to the water collecting pipe 22 of the rotary flat membrane filtration device 12 via a connecting pipe 37. As a result, warm filtered water flows into the heat exchanger 35 and warms the inside of the drying device 16. Therefore, the concentrated liquid transferred by the belt conveyor 44 is efficiently heated and dried by the hot air blowing pipe 34 and the heat exchanger 35 and uses the waste heat recovered from the rotary flat membrane filtration device 12. It saves energy.
【００１９】また、ケーシング４２の底板にはケーシン
グ４２内に溜まった水を排水するバルブ付きの排水管５
６が設けられる。次に、上記の如く構成された加熱式膜
濾過設備１０の作用について、クリプトスポリジウム等
の感染性原虫類で汚染された汚水を膜濾過する例で説明
する。濾過容器１８内に供給された汚水は、加熱管３８
から吹き出される加熱空気で６０°Ｃ以上に加熱されて
から回転する膜濾過部材２４の濾過膜２４Ａにより膜濾
過される。濾過膜２４Ａを透過した濾過水は中空回転軸
２０、集水管２２を介して装置外に排出される一方、濾
過容器１８内の汚水は濃縮されて汚泥状の濃縮液が形成
される。この場合、排泥管２６の開閉バルブ２７を閉じ
た状態にして、濾過容器１８内の汚水を６０°Ｃ以上で
３０分間以上加熱するようにする。これにより、汚水中
の感染性原虫類を確実に不活性化させることができる。
従って、膜濾過された濾過水、及び濾過容器１８内で濃
縮された濃縮液にも活性状態の感染性原虫類が残存しな
いようにできる。また、加熱した汚水を膜濾過するの
で、濾過性能を高めることができ、汚泥を含有する汚水
のように濾過性能が短時間で低下し易い場合にも、良好
な濾過性能を長期間維持することができる。A drain pipe 5 with a valve for draining water accumulated in the casing 42 is provided on the bottom plate of the casing 42.
6 are provided. Next, the operation of the heating type membrane filtration equipment 10 configured as described above will be described with an example in which sewage contaminated with infectious protozoa such as Cryptosporidium is subjected to membrane filtration. The sewage supplied into the filtration container 18 is supplied to a heating pipe 38.
After being heated to 60 ° C. or more by the heated air blown out from the filter, the membrane is filtered by the filtration membrane 24A of the rotating membrane filtration member 24. The filtered water that has passed through the filtration membrane 24A is discharged out of the apparatus via the hollow rotary shaft 20 and the water collecting pipe 22, while the sewage in the filtration vessel 18 is concentrated to form a sludge-like concentrated liquid. In this case, the open / close valve 27 of the exhaust pipe 26 is closed, and the wastewater in the filtration container 18 is heated at 60 ° C. or more for 30 minutes or more. Thereby, infectious protozoa in sewage can be reliably inactivated.
Therefore, active infectious protozoa can be prevented from remaining in the filtered water subjected to membrane filtration and the concentrated liquid concentrated in the filtration container 18. Further, since the heated sewage is subjected to membrane filtration, the filtration performance can be enhanced. Even when the filtration performance is easily reduced in a short time as in the case of sewage containing sludge, good filtration performance is maintained for a long time. Can be.
【００２０】次に、開閉バルブ２７を開き、排泥管２６
を介して濃縮液を乾燥装置１６の移動するベルト５０上
に落下させる。ベルト５０上の濃縮液は、ベルト５０に
より移送される途中でベルト５０の多数の小孔から水が
分離され、排水管５６から排出される。更に、ベルト５
０上の濃縮液には、温風吹出管３４から吹きつけられる
温風と熱交換器３５からの熱により加熱乾燥される。こ
れにより、濃縮液が乾燥して減容化された状態を乾燥汚
泥を得ることができる。乾燥汚泥はベルトコンベア４４
の下流端から回収容器５２に落下回収される。Next, the open / close valve 27 is opened, and the drainage pipe 26 is opened.
The concentrated liquid is dropped onto the moving belt 50 of the drying device 16 via the. In the concentrated liquid on the belt 50, water is separated from a number of small holes of the belt 50 while being transported by the belt 50, and is discharged from a drain pipe 56. In addition, belt 5
The concentrated liquid on 0 is heated and dried by the warm air blown from the warm air blowing pipe 34 and the heat from the heat exchanger 35. This makes it possible to obtain dried sludge in a state where the concentrated liquid is dried and reduced in volume. The dried sludge is supplied to the belt conveyor 44.
From the downstream end to the collection container 52 and collected.
【００２１】図２は、本発明に係る加熱式膜濾過設備の
第２の実施の形態を説明する断面図で、膜濾過装置とし
て浸漬型平膜濾過装置を使用した場合である。図２に示
すように、加熱式膜濾過設備１０は、浸漬型平膜濾過装
置６０と、浸漬型平膜濾過装置６０で膜濾過される汚水
を加熱する加熱手段１４と、浸漬型平膜濾過装置６０で
濃縮された濃縮液を乾燥する乾燥装置１６とで構成され
る。尚、加熱手段及び乾燥装置等における図１と同様の
機器については同符号を付すと共に説明を省略する。FIG. 2 is a sectional view for explaining a second embodiment of the heating type membrane filtration equipment according to the present invention, in which an immersion type flat membrane filtration apparatus is used as the membrane filtration apparatus. As shown in FIG. 2, the heating type membrane filtration equipment 10 includes a submerged flat membrane filtration device 60, a heating unit 14 for heating the sewage filtered by the submersion type flat membrane filtration device 60, and a submersion type flat membrane filtration device. And a drying device 16 for drying the concentrated liquid concentrated in the device 60. It should be noted that the same components as those in FIG. 1 in the heating means, the drying device, and the like are denoted by the same reference numerals and description thereof is omitted.
【００２２】浸漬型平膜濾過装置６０は、濾過容器１８
内に濾過膜６０Ａを一定間隔で複数枚ユニット化した平
膜エレメントで構成される。濾過膜６０Ａの材質は、回
転平膜濾過装置１２と同様に、ステンレス製の金属膜、
セラミックス膜、耐熱性の有機膜を使用することがで
き、膜の孔径は金属膜、セラミックス膜の場合は０．１
〜０．５μｍ、有機膜の場合は０．５μｍ以下が好まし
い。浸漬型平膜濾過装置６０は、図１の回転平膜濾過装
置１２に比べて濾過倍率を高くすることができない。そ
こで、原水配管１１の原水と集水管２２の濾過水とを熱
交換する熱交換器１９を設け、原水を連続的に濾過容器
１８内に供給して、濾過水の廃熱を熱交換器１９で回収
し、原水の温度を積極的に高めることにより濾過倍率を
高めるとよい。更に、排泥管２６に設けた開閉バルブ２
７を調整し、濾過容器１８内の汚泥濃度がほぼ一定にな
るように排出するとよい。The immersion type flat membrane filtration device 60 includes a filtration container 18.
It comprises a flat membrane element in which a plurality of filtration membranes 60A are unitized at regular intervals. The material of the filtration membrane 60A is a stainless steel metal membrane,
A ceramic film or a heat-resistant organic film can be used, and the pore size of the film is 0.1 mm in the case of a metal film or a ceramic film.
０．５0.5 μm, and preferably 0.5 μm or less in the case of an organic film. The immersion type flat membrane filtration device 60 cannot increase the filtration magnification as compared with the rotary flat membrane filtration device 12 of FIG. Therefore, a heat exchanger 19 for exchanging heat between the raw water of the raw water pipe 11 and the filtered water of the water collecting pipe 22 is provided, and the raw water is continuously supplied into the filtration vessel 18 so that the waste heat of the filtered water is removed by the heat exchanger 19. It is preferable to increase the filtration ratio by positively increasing the temperature of the raw water. Further, the opening / closing valve 2 provided on the
7 may be adjusted so that the sludge concentration in the filtration container 18 is discharged so as to be substantially constant.
【００２３】このように構成した本発明の第２の実施の
形態の場合にも、第１の実施の形態の加熱式膜濾過設備
１０と同様の効果を得ることができる。図３は、凝集沈
殿槽７２、砂濾過槽７４及び塩素殺菌処理から成る浄水
製造設備に、２段階膜濾過方式の加熱式膜濾過設備１０
を組み込んだ構成図であり、その構成を説明するにあた
り、原水、浄水、発生する汚泥、乾燥汚泥等の一般的な
マテリアルバランスについても説明する。Also in the case of the second embodiment of the present invention configured as described above, the same effect as that of the heated membrane filtration equipment 10 of the first embodiment can be obtained. FIG. 3 shows a heated membrane filtration system 10 of a two-stage membrane filtration system in a water purification facility comprising a coagulation sedimentation tank 72, a sand filtration tank 74 and a chlorine sterilization treatment.
In describing the configuration, a general material balance of raw water, purified water, generated sludge, dried sludge, and the like will also be described.
【００２４】図３に示すように、廃水の原水は、凝集沈
殿槽７２において凝集剤が添加されてＳＳ（固形物質）
が沈殿除去された後、砂濾過槽７４において砂濾過され
る。これにより、浄水を得ることができる。この場合、
水量１００００ｍ3/日（ｄ）、固形物質濃度（以下、
「ＳＳ濃度」という）５ｍｇ／Ｌの原水から、浄水９９
９０〜９９９５ｍ3/日が得られる。また、凝集沈殿槽７
２からはＳＳ濃度として１２００ｍｇ／Ｌの汚泥を含有
する汚水が５００ｍ3/日排出され、この汚水を２段階膜
濾過方式の加熱式膜濾過設備１０で処理する。尚、砂濾
過槽７４を洗浄した場合には洗浄排水としての洗浄汚水
が発生するが、ここではマテリアルバランスには含めな
いで考えることとする。As shown in FIG. 3, raw water of wastewater is converted into SS (solid matter) by adding a flocculant in a flocculation settling tank 72.
Are removed by sand filtration in a sand filtration tank 74. Thereby, purified water can be obtained. in this case,
Water amount 10000 m 3 / day (d), solid substance concentration (hereinafter,
From 5mg / L raw water, purified water 99
90-9995 m 3 / day are obtained. In addition, the coagulation sedimentation tank 7
From step 2, 500 m 3 / day of wastewater containing sludge having an SS concentration of 1200 mg / L is discharged, and the wastewater is treated in a two-stage membrane filtration type heated membrane filtration facility 10. When the sand filtration tank 74 is cleaned, cleaning sewage is generated as cleaning waste water, but is not included in the material balance here.
【００２５】これらの汚水は、２段階膜濾過方式の加熱
式膜濾過設備１０における１段目の膜濾過装置７６に供
給されて膜濾過される。この場合、汚水の汚泥濃度がま
だ余り高くないので、経済性を考慮して中空糸膜又は浸
漬型平膜濾過装置を使用するとよい。しかし、汚泥濃度
が高い場合には回転平膜濾過装置１２の方が回転遠心力
で濾過膜面に付着物が付着しにくく、濃度分極を小さく
できるので、濾過性能を長く維持できる。These sewage is supplied to the first-stage membrane filtration device 76 in the heating type membrane filtration equipment 10 of the two-stage membrane filtration system and is subjected to membrane filtration. In this case, since the sludge concentration of the sewage is not so high yet, it is preferable to use a hollow fiber membrane or a submerged flat membrane filtration device in consideration of economy. However, when the sludge concentration is high, the rotating flat membrane filtration device 12 is less likely to cause deposits to adhere to the filtration membrane surface due to the rotational centrifugal force and can reduce the concentration polarization, so that the filtration performance can be maintained for a long time.
【００２６】汚水は、この１段目の膜濾過により、濾過
水４５０ｍ3/日と、ＳＳ濃度として１２０００ｍｇ／Ｌ
の汚泥を含有する濃縮液５０ｍ3/日が得られる。１段目
の膜濾過の場合には、汚水中に感染性原虫類が含有され
ていても、濾過水は膜濾過により感染性原虫類が除去さ
れるので、得られた濾過水は配管等により浄水に合流さ
れて処理水として回収される。一方、濃縮液は２段目の
膜濾過装置７８に送られる。２段目の膜濾過装置７８の
場合には、回転平膜濾過装置１２を使用するのが良い。The sewage is subjected to 450 m 3 / day of filtered water and 12,000 mg / L of SS concentration by this first stage membrane filtration.
50 m 3 / day of a concentrated liquid containing the sludge. In the case of the first-stage membrane filtration, even if the infectious protozoa are contained in the sewage, the filtered water is filtered to remove the infectious protozoa. It is combined with purified water and collected as treated water. On the other hand, the concentrate is sent to the second-stage membrane filtration device 78. In the case of the second-stage membrane filtration device 78, it is preferable to use the rotary flat membrane filtration device 12.
【００２７】２段目の回転平膜濾過装置７８に送られた
濃縮液は、６０°Ｃ以上で３０分間以上加熱されてから
膜濾過される。この加熱により、濃縮液に感染性原虫類
が濃縮されている場合でも、確実に不活性化させること
ができる。この２段目の膜濾過により、濾過水４０〜４
５ｍ3/日と、ＳＳ濃度として６００００〜１２００００
ｍｇ／Ｌの汚泥を含有する濃縮液５〜１０ｍ3/日が得ら
れる。得られた濾過水は配管等により原水に戻して浄化
処理のラインに流す。また、２段目の高濃度に濃縮され
た濃縮液は、図１に示した乾燥装置１６に送られて脱水
され、乾燥汚泥として回収容器５２に回収される。これ
により、感染性原虫類を不活性化し、減容化された乾燥
汚泥を得ることができる。乾燥装置１６での乾燥におい
て、高温度の高濃度汚泥は取り扱いが危険なので、排気
手段（図示せず）を備えたケーシング４２内を通過させ
ながら乾燥し、含水率が６５％以下の乾燥した乾燥汚泥
は自動的に容器に収集されるようにすることが好まし
い。The concentrated solution sent to the second-stage rotary flat membrane filter 78 is heated at 60 ° C. or more for 30 minutes or more, and then subjected to membrane filtration. By this heating, even when the infectious protozoa is concentrated in the concentrate, it can be reliably inactivated. By this second stage membrane filtration, filtered water 40 to 4
5m 3 / day and SS concentration of 60000 to 120,000
A concentrate of 5 to 10 m 3 / day containing mg / L of sludge is obtained. The obtained filtered water is returned to the raw water by a pipe or the like and flows to a purification treatment line. Further, the concentrated liquid concentrated to a high concentration in the second stage is sent to the drying device 16 shown in FIG. 1 to be dehydrated, and collected in the collection container 52 as dried sludge. This makes it possible to inactivate infectious protozoa and obtain reduced volume of dried sludge. In the drying by the drying device 16, high-concentration sludge at a high temperature is dangerous to handle, so it is dried while passing through a casing 42 provided with an exhaust means (not shown), and the dried water having a water content of 65% or less is dried. Preferably, the sludge is automatically collected in a container.
【００２８】このように、本発明の加熱式膜濾過設備１
０を組み込んだ浄水製造設備７０では、感染性原虫類を
含む可能性のある原水から安全な水を回収し、しかも、
加熱殺菌により感染性原虫類を含有しない無臭の乾燥汚
泥を得ることができる。また、膜濾過される汚水（濃縮
液）を６０°Ｃ以上に加熱して汚水の粘度を下げた状態
で膜濾過するので、極めて高い濃度、例えば１２０００
０ｍｇ／Ｌ程度の濃縮液を得ることができる。従って、
後段の乾燥装置１６での乾燥を容易に行うことができ
る。As described above, the heating type membrane filtration equipment 1 of the present invention
In the water purification plant 70 incorporating zero, safe water is recovered from raw water that may contain infectious protozoa, and
By heat sterilization, odorless dry sludge containing no infectious protozoa can be obtained. Further, since the sewage (concentrated liquid) to be subjected to membrane filtration is heated to 60 ° C. or higher to perform membrane filtration in a state where the viscosity of the sewage is reduced, an extremely high concentration, for example, 12,000
A concentrated solution of about 0 mg / L can be obtained. Therefore,
Drying in the subsequent drying device 16 can be easily performed.
【００２９】更には、濃縮液を連続的に乾燥装置１６で
乾燥脱水するので、従来の天日乾燥のように広大な面積
の乾燥場も必要ない。図４は、凝集沈殿槽７２、砂濾過
槽７４及び塩素酸菌処理からから成る中水製造設備に、
本発明の加熱式膜濾過設備１０を組み込んだ構成図であ
る。そして、凝集沈殿槽７２から排出される汚泥を含有
する汚水、及び砂濾過槽を洗浄した洗浄汚水を、回転平
膜濾過装置１２により１段処理し、膜濾過による濃縮液
を図１で説明した乾燥装置１６で乾燥する場合である。
このように、汚水を１段のみの加熱式膜濾過設備１０で
処理する場合には、汚水を６０°Ｃ以上で３０分間以
上、好ましくは７５°Ｃ以上で３０分以上に加熱しなが
ら膜濾過することが好ましい。Further, since the concentrated liquid is continuously dried and dehydrated by the drying device 16, there is no need for a drying area having a large area as in conventional solar drying. FIG. 4 shows a coagulation sedimentation tank 72, a sand filtration tank 74, and a sewage production facility comprising chloric acid bacteria treatment,
BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram incorporating the heating type membrane filtration equipment 10 of this invention. Then, the sewage containing the sludge discharged from the coagulation sedimentation tank 72 and the washed sewage washed from the sand filtration tank are subjected to one-stage treatment by the rotary flat membrane filtration device 12, and the concentrated liquid by membrane filtration is described in FIG. This is a case where drying is performed by the drying device 16.
As described above, when the wastewater is treated by the single-stage heated membrane filtration facility 10, the wastewater is heated at a temperature of 60 ° C or more for 30 minutes or more, preferably at a temperature of 75 ° C or more for 30 minutes or more. Is preferred.
【００３０】図５は、浄水製造用膜濾過装置８０の簡易
水道向けの浄水製造設備に、本発明の加熱式膜濾過設備
１０を組み込んだ構成図である。そして、浄水製造用膜
濾過装置８０を洗浄する物理洗浄排水の処理に浸漬型平
膜濾過装置６０タイプの加熱式膜濾過設備１０を組み込
み、膜濾過による濃縮液を図１で説明した乾燥装置１６
で乾燥する。この場合、物理洗浄排水には、感染性原虫
類を含む可能性があるので、加熱式膜濾過設備１０での
膜処理は、物理洗浄排水を６０°Ｃ以上で３０分間以
上、好ましくは７５°Ｃ以上に加熱しながら膜濾過する
ことが必要である。FIG. 5 is a block diagram showing a configuration in which the heating type membrane filtration equipment 10 according to the present invention is incorporated in a water purification equipment for simple water supply of the membrane filtration device 80 for water purification. Then, the heating type membrane filtration equipment 10 of the immersion type flat membrane filtration device 60 type is incorporated in the treatment of the physical cleaning wastewater for cleaning the membrane filtration device 80 for producing purified water, and the concentrated solution by the membrane filtration is dried by the drying device 16 described in FIG.
Dry with. In this case, since the physical washing wastewater may contain infectious protozoa, the membrane treatment in the heating type membrane filtration equipment 10 is performed by heating the physical washing wastewater at 60 ° C. or more for 30 minutes or more, preferably 75 ° C. It is necessary to carry out membrane filtration while heating to above C.
【００３１】尚、本発明の加熱式膜濾過設備は、浄水の
製造設備にのみ使用されるものではなく、バイオ産業、
医・薬関連設備のように、汚水の固液分離と汚水中の菌
類の殺菌を同時に行う全ての装置に適用できる。また、
本発明の加熱式膜濾過装置は、微生物、例えば活性汚泥
を使用した生物学的廃水処理設備から発生する余剰汚泥
の減容化処理にも適用することができる。The heating type membrane filtration equipment of the present invention is not used only for the production equipment of purified water,
It can be applied to all devices that simultaneously perform solid-liquid separation of sewage and sterilize fungi in sewage, such as medical and pharmaceutical equipment. Also,
The heating type membrane filtration device of the present invention can also be applied to volume reduction treatment of excess sludge generated from biological wastewater treatment equipment using microorganisms, for example, activated sludge.
【００３２】[0032]
【発明の効果】以上説明したように、本発明の加熱式膜
濾過設備によれば、感染性原虫類を含む可能性のある汚
水を安全且つ確実に処理することができる。また、浄水
製造設備や中水製造設備に本発明の加熱式膜濾過設備を
組み込めば、感染性原虫類を含む可能性のある原水から
安全な水を回収し、しかも、加熱殺菌により感染性原虫
類を含有しない無臭の乾燥汚泥を得ることができる。As described above, according to the heated membrane filtration equipment of the present invention, sewage which may contain infectious protozoa can be treated safely and reliably. In addition, if the heating type membrane filtration equipment of the present invention is incorporated in water purification equipment or intermediate water production equipment, safe water can be recovered from raw water that may contain infectious protozoa, and infectious protozoa can be recovered by heat sterilization. It is possible to obtain odorless dry sludge containing no odorous substances.
【図１】本発明の加熱式膜濾過設備の第１の実施の形態
を説明する断面図であり、膜濾過装置として回転型平膜
濾過装置を用いた図である。FIG. 1 is a cross-sectional view for explaining a first embodiment of a heated type membrane filtration equipment of the present invention, in which a rotary flat membrane filtration device is used as a membrane filtration device.
【図２】本発明の加熱式膜濾過設備の第１の実施の形態
を説明する断面図であり、膜濾過装置として浸漬型平膜
濾過装置を用いた図である。FIG. 2 is a cross-sectional view illustrating a first embodiment of the heated membrane filtration equipment according to the present invention, in which an immersion flat membrane filtration device is used as the membrane filtration device.
【図３】凝集沈殿槽、砂濾過槽及び塩素殺菌処理から成
る浄水製造設備に本発明の２段階膜濾過方式の加熱式膜
濾過設備を組み込んだ構成図FIG. 3 is a block diagram of a water purification facility comprising a coagulation sedimentation tank, a sand filtration tank, and a chlorine sterilization treatment, in which a heated membrane filtration equipment of the two-stage membrane filtration system of the present invention is incorporated.
【図４】凝集沈殿槽、砂濾過槽及び塩素殺菌処理から成
る中水製造設備に本発明の１段階膜濾過方式の加熱式膜
濾過設備を組み込んだ構成図FIG. 4 is a block diagram showing a one-stage membrane filtration type heating type membrane filtration facility of the present invention incorporated in a middle water production facility comprising a coagulation sedimentation tank, a sand filtration tank and a chlorine sterilization treatment.
【図５】浄水製造用膜濾過装置の浄水製造設備に、本発
明の加熱式膜濾過設備を組み込んだ構成図FIG. 5 is a configuration diagram in which the heating type membrane filtration equipment of the present invention is incorporated in the water purification equipment of the membrane filtration device for water purification.
１０…加熱式膜濾過設備 １２…回転平膜濾過装置 １４…加熱手段 １６…乾燥装置 １８…濾過容器 ２０…中空回転軸 ２２…集水管 ２４…膜濾過部材 ２４Ａ…濾過膜 ２６…排泥管 ３２…排気管 ３４…温風吹出管 ３６…送風機 ４２…ケーシング ４４…ベルトコンベア ５２…回収容器 ６０…浸漬型平膜濾過装置 ６０Ａ…濾過膜 ７０…浄水製造設備 ７２…凝集沈殿槽 ７４…砂濾過槽 ７６…１段目の膜濾過装置 ７８…２段目の膜濾過装置 ８０…浄水製造用膜濾過装置 DESCRIPTION OF SYMBOLS 10 ... Heating membrane filtration equipment 12 ... Rotating flat membrane filtration device 14 ... Heating means 16 ... Drying device 18 ... Filtration container 20 ... Hollow rotating shaft 22 ... Water collecting tube 24 ... Membrane filtration member 24A ... Filtration membrane 26 ... Drainage pipe 32 ... exhaust pipe 34 ... warm air blow-out pipe 36 ... blower 42 ... casing 44 ... belt conveyor 52 ... recovery container 60 ... immersion type flat membrane filtration device 60A ... filtration membrane 70 ... water purification equipment 72 ... coagulation sedimentation tank 74 ... sand filtration tank 76: First-stage membrane filtration device 78: Second-stage membrane filtration device 80: Membrane filtration device for producing purified water
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大熊 那夫紀 東京都千代田区内神田１丁目１番14号 日 立プラント建設株式会社内 (72)発明者 大西 真人 東京都千代田区内神田１丁目１番14号 日 立プラント建設株式会社内 (72)発明者 安藤 尋樹 東京都千代田区内神田１丁目１番14号 日 立プラント建設株式会社内 (72)発明者 久保 裕 島根県安来市安来町2107番地２ 日立金属 株式会社冶金研究所内 (72)発明者 木下 洋一 島根県安来市恵乃島町114番地１ 株式会 社安来製作所安来精密内 Ｆターム(参考） 4D006 GA02 HA41 HA84 HA93 JA55A JA66Z KA01 KA15 KA44 KA52 KA54 KA56 KA57 KA63 KA71 KB13 KB15 KB30 KC24 KE12P KE14P KE16R KE28R MA03 MA22 MB15 MC02 MC03 PA01 PA02 PB02 PB08 PB24 PC41 PC64 4D034 AA26 CA06 CA21 DA02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naoki Okuma 1-1-14 Uchikanda, Chiyoda-ku, Tokyo Inside Hitachi Plant Construction Co., Ltd. (72) Masato Onishi 1-chome Uchikanda, Chiyoda-ku, Tokyo No. 1-14 Hitachi Plant Construction Co., Ltd. (72) Inventor Hiroki Ando 1-11-1 Uchikanda, Chiyoda-ku, Tokyo Inside Hitachi Plant Construction Co., Ltd. (72) Inventor Hiroshi Kubo Yasugi-cho, Yasugi City, Shimane Prefecture 2107 No. 2 Hitachi Metals, Ltd. Metallurgical Research Laboratory (72) Inventor Yoichi Kinoshita 114 No. 1 Enojima-cho, Yasugi-shi, Shimane Prefecture F-term (reference) 4D006 GA02 HA41 HA84 HA93 JA55A JA66Z KA01 KA15 KA44 KA52 KA54 KA56 KA57 KA63 KA71 KB13 KB15 KB30 KC24 KE12P KE14P KE16R KE28R MA03 MA22 MB15 MC02 MC03 PA01 PA02 PB02 PB08 PB24 PC41 PC64 4D034 AA26 CA06 CA21 DA02
Claims (4)
て、 前記汚水を前記微生物が死滅する温度で加熱しながら膜
濾過して濾過液と濃縮液とに分離する膜濾過装置と、 前記膜濾過装置から回収した廃熱を前記濃縮液を加熱乾
燥する熱源の少なくとも１部に利用する乾燥装置と、 から成ることを特徴とする加熱式膜濾過設備。1. A facility for filtering sewage containing microorganisms, wherein the sewage is subjected to membrane filtration while heating at a temperature at which the microorganisms are killed to separate the filtrate into a filtrate and a concentrate, and the membrane filtration device. A drying apparatus that uses waste heat recovered from the above for at least one part of a heat source for heating and drying the concentrated liquid.
ることを特徴とする請求項１の加熱式膜濾過設備。2. The heating type membrane filtration equipment according to claim 1, wherein said membrane filtration apparatus is a rotary flat membrane filtration apparatus.
の濾過液と濃縮液とに分離する第１の膜濾過装置と、 前記第１の膜濾過装置からの濃縮液を６０°Ｃ以上の温
度に加熱して膜濾過して２段目の濾過液と濃縮液とに分
離する第２の膜濾過装置と、 前記２段目の膜濾過装置から回収した廃熱を、前記２段
目の濃縮液を加熱乾燥する熱源の少なくとも１部に利用
する乾燥装置と、 から成ることを特徴とする加熱式膜濾過設備。3. A first membrane filtration device for filtering infiltrate containing infectious protozoa through a membrane to separate it into a first-stage filtrate and a concentrated solution, and 60% of the concentrated solution from the first membrane filtration device. A second membrane filtration device that is heated to a temperature of at least ° C to perform membrane filtration and separates into a second-stage filtrate and a concentrated solution; and the waste heat recovered from the second-stage membrane filtration device, A drying device that uses at least a part of a heat source for heating and drying the second-stage concentrated solution.
から発生する汚泥含有汚水及び／又は砂濾過槽の洗浄汚
水であることを特徴とする請求項３の加熱式膜濾過設
備。4. The heated membrane filtration equipment according to claim 3, wherein the raw water containing infectious protozoa is sludge-containing wastewater generated from the coagulation sedimentation tank and / or washing wastewater of a sand filtration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023699A JP3593907B2 (en) | 1999-01-28 | 1999-01-28 | Heated membrane filtration equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023699A JP3593907B2 (en) | 1999-01-28 | 1999-01-28 | Heated membrane filtration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000218138A true JP2000218138A (en) | 2000-08-08 |
| JP3593907B2 JP3593907B2 (en) | 2004-11-24 |
Family
ID=12021566
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023699A Expired - Fee Related JP3593907B2 (en) | 1999-01-28 | 1999-01-28 | Heated membrane filtration equipment |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004321997A (en) * | 2003-04-25 | 2004-11-18 | Sanyo Aqua Technology Co Ltd | Filter apparatus |
| JP2005152694A (en) * | 2003-11-20 | 2005-06-16 | Kurita Water Ind Ltd | Water cleaning treatment facility |
| JP2008259945A (en) * | 2007-04-11 | 2008-10-30 | Toshiba Corp | Filter device and cleaning method of filter device |
| JP2013000148A (en) * | 2011-06-13 | 2013-01-07 | Act:Kk | Waste liquid treatment device and cleaning system |
| WO2019142402A1 (en) * | 2018-01-17 | 2019-07-25 | 住友電気工業株式会社 | Filtration device and method for washing hollow fiber membrane |
-
1999
- 1999-01-28 JP JP2023699A patent/JP3593907B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004321997A (en) * | 2003-04-25 | 2004-11-18 | Sanyo Aqua Technology Co Ltd | Filter apparatus |
| JP4726396B2 (en) * | 2003-04-25 | 2011-07-20 | 三洋アクアテクノ株式会社 | Filtration device |
| JP2005152694A (en) * | 2003-11-20 | 2005-06-16 | Kurita Water Ind Ltd | Water cleaning treatment facility |
| JP2008259945A (en) * | 2007-04-11 | 2008-10-30 | Toshiba Corp | Filter device and cleaning method of filter device |
| JP2013000148A (en) * | 2011-06-13 | 2013-01-07 | Act:Kk | Waste liquid treatment device and cleaning system |
| WO2019142402A1 (en) * | 2018-01-17 | 2019-07-25 | 住友電気工業株式会社 | Filtration device and method for washing hollow fiber membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3593907B2 (en) | 2004-11-24 |
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