JP7278665B1 - Wastewater treatment system - Google Patents

Wastewater treatment system Download PDF

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JP7278665B1
JP7278665B1 JP2022071740A JP2022071740A JP7278665B1 JP 7278665 B1 JP7278665 B1 JP 7278665B1 JP 2022071740 A JP2022071740 A JP 2022071740A JP 2022071740 A JP2022071740 A JP 2022071740A JP 7278665 B1 JP7278665 B1 JP 7278665B1
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勇 小林
敏子 平田
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株式会社令和コーポレーション
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Abstract

【課題】簡単な設備で処理時間が短く、設備コストや運転コストが少なく、処理後の排水のＢＯＤ値を充分に低下させることができる排水処理システムを提供すること。【解決手段】畜舎等から排出される洗浄廃水等の排水を分離、浄化処理する排水処理システムであって、排水の上澄成分が上澄移送ユニット１２１によって導入される処理水槽１２０と、処理水槽１２０の上澄成分が第１処理水移送ユニット１３１によって導入される第１濾過槽１３０と、第１濾過槽１３０を通過した液体成分が第２処理水移送ユニットに１４１よって導入される第２濾過槽１４０とを有すること。【選択図】図１The present invention provides a wastewater treatment system that can sufficiently reduce the BOD value of treated wastewater with simple equipment, short treatment time, low equipment costs and low operating costs. A wastewater treatment system for separating and purifying wastewater such as washing wastewater discharged from livestock barns or the like, comprising a treated water tank (120) into which a supernatant component of the wastewater is introduced by a supernatant transfer unit (121), and a treated water tank. A first filtration tank 130 in which the supernatant component of 120 is introduced by the first treated water transfer unit 131, and a second filtration in which the liquid component that has passed through the first filtration tank 130 is introduced to the second treated water transfer unit 141. having a tank 140; [Selection drawing] Fig. 1

Description

この発明は、畜舎から排出される洗浄廃水の排水を分離、浄化処理する排水処理システムに関する。 The present invention relates to a wastewater treatment system for separating and purifying wastewater from cleaning wastewater discharged from livestock barns .

畜舎から排出される洗浄廃水の排水は、強い異臭と汚濁、着色があり、高ＢＯＤ値を有する。
これらを処理する際に、固形物と液状排水とに分別し、その排水に希釈水を加えて放流したり地下に浸透させる等の方法が取ることも考えられるが、環境汚染を来さない放流可能な浄水とすることは困難であった。
また、環境負荷が小さくなるようＢＯＤ値を低下させる方法として、有機物を処理する微生物有し曝気させる曝気槽で排水を処理するもの等が知られている。 Washing wastewater discharged from livestock barns has a strong odor, contamination, coloration, and a high BOD value.
When treating these, it is conceivable to separate them into solid matter and liquid wastewater, add diluted water to the wastewater and discharge it, or allow it to permeate into the ground. It was difficult to make the water as clean as possible.
Further, as a method for lowering the BOD value so as to reduce the environmental load, there is known a method of treating wastewater in an aeration tank containing microorganisms for treating organic matters.

例えば、特許文献１等で公知の廃水処理システムでは、パーラー廃水を一時ストックする原水槽と、パーラー廃水に含まれる粗大固形物を除去するスクリーンと、前記粗大固形物を除去したパーラー廃水を蓄える貯留槽と、パーラー廃水を分離沈殿させる第一沈殿槽と、前記パーラー廃水に含まれる有機物を処理する微生物を有し曝気させる曝気槽と、処理したパーラー廃水を分離沈殿させる第二沈殿槽を備えることで、固形物と分離した液体成分を曝気槽中の微生物により浄化処理している。 For example, in a wastewater treatment system known in Patent Document 1, etc., there is a raw water tank for temporarily stocking parlor wastewater, a screen for removing coarse solids contained in parlor wastewater, and a storage for storing parlor wastewater from which the coarse solids are removed. A tank, a first sedimentation tank for separating and sedimenting parlor wastewater, an aeration tank containing microorganisms for treating organic matter contained in the parlor wastewater and for aeration, and a second sedimentation tank for separating and sedimenting the treated parlor wastewater. , the liquid components separated from the solids are purified by microorganisms in the aeration tank.

特開２００６－８７９６８号公報JP-A-2006-87968

公知の廃水処理システムにおいて、曝気槽において充分に有機物を分解することでＢＯＤ値を低下させることが可能であるが、大量の排水を処理するためには、設置面積を多く要し、処理に長時間を要し、曝気のためのポンプ設備等の設備コストや運転コストも高いものとなっていた。 In known wastewater treatment systems, it is possible to reduce the BOD value by sufficiently decomposing organic matter in an aeration tank, but in order to treat a large amount of wastewater, a large installation area is required and treatment takes a long time. It takes a long time, and the equipment costs such as pump equipment for aeration and the operating costs are also high.

そこで、本発明は、簡単な設備で処理時間が短く、設備コストや運転コストが少なく、処理後の排水のＢＯＤ値を充分に低下させることができる排水処理システムを提供することを目的とする。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a wastewater treatment system that can sufficiently reduce the BOD value of treated wastewater with simple equipment, short treatment time, low equipment and operating costs.

本発明は、畜舎から排出される洗浄廃水の排水を分離、浄化処理する排水処理システムであって、排水が導入され、沈殿分離が行われる複数の原水槽と、前記原水槽の沈殿成分が汚泥移送ユニットによって導入される汚泥槽と、排水の上澄成分が上澄移送ユニットによって導入される処理水槽と、前記処理水槽の上澄成分が第１処理水移送ユニットによって導入される第１濾過槽と、前記第１濾過槽を通過した液体成分が第２処理水移送ユニットによって導入される第２濾過槽とを有し、前記第１濾過槽と前記第２濾過槽は、同一の濾過材を有することにより、前記課題を解決するものである。 The present invention is a wastewater treatment system for separating and purifying wastewater from cleaning wastewater discharged from livestock barns , comprising a plurality of raw water tanks into which wastewater is introduced and sedimentation separation is performed, and the sedimentary components of the raw water tanks are sludge. a sludge tank introduced by a transfer unit; a treated water tank into which a supernatant component of waste water is introduced by a supernatant transfer unit; and a first filtration tank into which a supernatant component of said treated water tank is introduced by a first treated water transfer unit. and a second filtration tank into which the liquid component that has passed through the first filtration tank is introduced by a second treated water transfer unit , wherein the first filtration tank and the second filtration tank use the same filter material. By having , the above problem is solved.

請求項１に係る発明の排水処理システムによれば、連続的に第１濾過槽及び第２濾過槽を通過しながら排水の液体成分を浄化することができるため、曝気のためのポンプ設備等の設備コストや運転コストを低減することができる。
また、排水の上澄成分が上澄移送ユニットによって導入される処理水槽を有することにより、処理水槽の上流で固液分離処理が断続的に行われても排水の上澄成分を処理水槽に蓄えてバッファとして第１濾過槽及び第２濾過槽に連続的に送ることができる。
このことで、第１濾過槽及び第２濾過槽を常に連続稼働状態とすることができ設備を有効活用できる。
また、複数の原水槽と、原水槽の沈殿成分が第１汚泥移送ユニットによって導入される汚泥槽とを有することで、排水を１つの原水槽に導入し所定の時間沈殿させている間に他の原水槽に排水の導入が可能となり、沈殿による固液分離を十分に行いつつ排水の連続導入を行って処理効率を向上することができる。 According to the wastewater treatment system of the invention according to claim 1, since the liquid component of the wastewater can be purified while continuously passing through the first filtration tank and the second filtration tank, pump equipment for aeration, etc. Equipment costs and operating costs can be reduced.
Further, by having the treated water tank into which the supernatant component of the waste water is introduced by the supernatant transfer unit, even if the solid-liquid separation treatment is intermittently performed upstream of the treated water tank, the supernatant component of the waste water can be stored in the treated water tank. can be continuously sent to the first filter tank and the second filter tank as a buffer.
As a result, the first filtration tank and the second filtration tank can always be continuously operated, and the equipment can be effectively utilized.
In addition, by having a plurality of raw water tanks and a sludge tank into which the sedimented components of the raw water tank are introduced by the first sludge transfer unit, wastewater is introduced into one raw water tank and sedimented for a predetermined period of time. It is possible to introduce wastewater into the raw water tank, and it is possible to improve the treatment efficiency by continuously introducing wastewater while sufficiently performing solid-liquid separation by sedimentation.

請求項２に記載の構成によれば、濾過材として多孔質化した木質砕片を有することで、有機物を分解する微生物が最適に保持され、ＢＯＤ値をさらに低下させることができる。
請求項３に記載の構成によれば、流動性の低い沈殿成分を、少ない動力で効率よく汚泥槽に移送することができる。
請求項４、５に記載の構成によれば、原水槽における固体成分の沈殿分離をより確実に行うことが可能となる。 According to the second aspect of the present invention, by using porous wood chips as the filtering material, microorganisms that decompose organic matter are optimally retained, and the BOD value can be further reduced.
According to the configuration of claim 3 , the sediment components with low fluidity can be efficiently transferred to the sludge tank with little power.
According to the configurations described in claims 4 and 5 , it is possible to more reliably perform sedimentation separation of the solid components in the raw water tank.

本発明の一実施形態の排水処理システムの概略構成図。BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the waste water treatment system of one Embodiment of this invention. 本発明の一実施形態の排水処理システムの平面説明図。BRIEF DESCRIPTION OF THE DRAWINGS The plane explanatory drawing of the waste water treatment system of one Embodiment of this invention.

本発明の一実施形態の排水処理システム１００は、図１、２に示すように、畜舎から排出される洗浄廃水の排水が排水導入ユニット１１１によって導入され、処理剤を投入して撹拌ユニット１１２により撹拌された後、沈殿分離が行われる複数の原水槽１１０と、原水槽１１０の上澄成分が上澄移送ユニット１２１によって導入される処理水槽１２０と、処理水槽１２０の上澄成分が第１処理水移送ユニット１３１によって導入される第１濾過槽１３０と、第１濾過槽１３０を通過した液体成分が第２処理水移送ユニット１４１によって導入される第２濾過槽１４０とを有している。
また、複数の原水槽１１０の沈殿成分が泥移送ユニット１５１によって導入される汚泥槽１５０を有している。 In the wastewater treatment system 100 of one embodiment of the present invention , as shown in FIGS. A plurality of raw water tanks 110 in which sedimentation separation is performed after agitation, a treated water tank 120 into which the supernatant components of the raw water tanks 110 are introduced by a supernatant transfer unit 121, and the supernatant components of the treated water tanks 120 are subjected to the first treatment. It has a first filtration tank 130 introduced by a water transfer unit 131 and a second filtration tank 140 into which a liquid component passed through the first filtration tank 130 is introduced by a second treated water transfer unit 141 .
It also has a sludge tank 150 into which sediment components of a plurality of raw water tanks 110 are introduced by a mud transfer unit 151 .

汚泥槽１５０は、原水槽１１０及び処理水槽１２０の底部よりも下に配置されており、本実施形態では、原水槽１１０、処理水槽１２０、第１濾過槽１３０及び第２濾過槽１４０は、床面から立ち上がる隔壁によって区分され、汚泥槽１５０は床面より下に暗渠として配置されている。
原水槽１１０の底部には、沈殿成分である固形物を含む汚泥が集積される汚泥桝１１５が設けられており、汚泥移送ユニット１５１は、汚泥桝１１５に集積された汚泥を汚泥槽１５０に移送するように構成されている。 The sludge tank 150 is arranged below the bottoms of the raw water tank 110 and the treated water tank 120. In the present embodiment, the raw water tank 110, the treated water tank 120, the first filtration tank 130 and the second filtration tank 140 are arranged on the floor. Bounded by bulkheads rising from the surface, the sludge tank 150 is arranged as a culvert below the floor.
At the bottom of the raw water tank 110, a sludge box 115 is provided in which sludge containing solid matter, which is a sedimentation component, is accumulated. is configured to

第１濾過槽１３０及び第２濾過槽１４０には、多孔質化した木質砕片からなる濾過材が充填されており、第１処理水移送ユニット及び第２処理水移送ユニットから導入される液体成分は、濾過材の上面にシャワーリングされることで均等に浸透するように構成されている。
また、第１濾過槽１３０及び第２濾過槽１４０の底部には側面に多数の流入孔が設けられたパイプ部材で構成された底部配管１３５、１４５が配置されており、濾過材を通過した液体成分を効率よく回収できるように構成されている。
本実施形態では、２槽の原水槽１１０が設けられているが、３槽以上としてもよい。
また、第１濾過槽１３０が２槽に区分され、合計で第２濾過槽１４０の倍の容量で構成されているが、それぞれの液体成分の通過速度に応じて適宜容量比を設定すればよい。
また、第１濾過槽１３０、第２濾過槽１４０は、わずかに混じる固形物による目詰まりの防止及び微生物の活性の維持のため、中間高さ部にブロアー配管を設けるのが望ましい。 The first filtration tank 130 and the second filtration tank 140 are filled with a filter material made of porous wood fragments, and the liquid components introduced from the first treated water transfer unit and the second treated water transfer unit are , is configured to be evenly permeated by being showered on the upper surface of the filtering material.
In addition, bottom pipes 135 and 145 composed of pipe members having a large number of inflow holes provided on the side surface are arranged at the bottoms of the first filtration tank 130 and the second filtration tank 140, and the liquid that has passed through the filtering material is It is designed so that the components can be collected efficiently.
Although two raw water tanks 110 are provided in this embodiment, the number may be three or more.
In addition, the first filtration tank 130 is divided into two tanks, and the total capacity is double that of the second filtration tank 140, but the capacity ratio may be appropriately set according to the passage speed of each liquid component. .
In addition, it is desirable that the first filtration tank 130 and the second filtration tank 140 be provided with a blower pipe at an intermediate height portion in order to prevent clogging due to slightly mixed solids and to maintain the activity of microorganisms.

以上のように構成された排水処理システム１００で牛舎内パーラー（牛乳を取り出す場所）から出た排水の処理を行う際の具体的な処理の流れについて説明する。
各槽の容量は以下の通りである。
原水槽 ・・約３５ｍ３*２
第１濾過槽 ・・約４０ｍ３*２
第２濾過槽 ・・約４０ｍ３
処理水槽 ・・約９０ｍ３
また、第１濾過槽１３０、第２濾過槽１４０の濾過材として「マートンチップ」（登録商標）を使用した。 A specific process flow for treating wastewater discharged from the barn parlor (where milk is taken out) by the wastewater treatment system 100 configured as described above will be described.
The capacity of each tank is as follows.
Raw water tank ・・・About 35m 3 *2
1st filtration tank: about 40m 3 *2
Second filtration tank: about 40m3
Treated water tank: about 90m3
In addition, "Merton chip" (registered trademark) was used as the filter material of the first filtration tank 130 and the second filtration tank 140 .

まず、牛舎内パーラーから出た排水を排水導入ユニット１１１に備えられたポンプによって一方の原水槽１１０に３０ｔになるまで入れる。
一方の原水槽１１０に３０ｔの排水が導入されると、一方の原水槽１１１に繋がる電動ボール弁が閉じられ、他方の原水槽１１１に繋がる電動ボール弁が開放される。
次に撹拌ユニット１１２によって一方の原水槽１１０の撹拌しながら処理剤を投入する。
本実施形態では処理剤として、ポリ硫酸第二鉄液、苛性ソーダ溶液、高分子凝集促進剤（ＺフロックＣ－１０１）を使用した。
定量ポンプ（図示せず）を使用してポリ硫酸第二鉄を２分間で４５Ｌ注入し、その後、苛性ソーダ液を２分間で２０Ｌ注入し、最後に、高分子凝集促進剤４５０Ｌを３分で注入する。
原水槽１１０に薬品が注入されたら、定量ポンプの配管も一方の原水槽１１１に繋がる電動ボール弁が閉じられ、他方の原水槽１１１に繋がる電動ボール弁が開放される。 First, the wastewater discharged from the barn parlor is fed into one of the raw water tanks 110 by a pump provided in the wastewater introduction unit 111 until the volume reaches 30 tons.
When 30 tons of waste water is introduced into one raw water tank 110, the electric ball valve connected to one raw water tank 111 is closed and the electric ball valve connected to the other raw water tank 111 is opened.
Next, the processing agent is introduced into one of the raw water tanks 110 while being stirred by the stirring unit 112 .
In the present embodiment, a polyferric sulfate solution, a caustic soda solution, and a polymer flocculation accelerator (Z Flock C-101) were used as treatment agents.
Using a metering pump (not shown), 45 L of ferric polysulfate is injected in 2 minutes, then 20 L of caustic soda solution is injected in 2 minutes, and finally 450 L of polymer flocculation accelerator is injected in 3 minutes. do.
After the chemical is injected into the raw water tank 110, the electric ball valve connected to one of the raw water tanks 111 of the metering pump piping is closed, and the electric ball valve connected to the other raw water tank 111 is opened.

さらに２分ほど撹拌して撹拌ユニット１１２の動作を一旦停止し、１分後に逆回転で撹拌した後に撹拌ユニット１１２の動作を停止して３０分～１時間静置する。
次に、上澄移送ユニット１２１のポンプが稼働して上澄成分を処理水槽１２０に移送するとともに、汚泥移送ユニット１５１のポンプが稼働して沈殿成分を汚泥槽１５０に移送する。
この時、汚泥移送ユニット１５１のポンプは、上澄移送ユニット１２１のポンプが稼働を停止するまで、１０秒駆動２０秒停止の間欠動作を繰り返す。
その後、原水槽１１０の底部に残った汚泥を撹拌モーターを約２０秒作動させた後に汚泥移送ユニット１５１のポンプを連続作動させて原水槽１１０に残った内容物を全て汚泥槽１５０に移送する。
上記処理を２つの原水槽１１０で交互に行うことで、処理水槽１２０に所定の量の液体を常に貯留させる、以降の連続処理を効率良く行うことが可能となる。 After further stirring for about 2 minutes, the operation of the stirring unit 112 is temporarily stopped, and after stirring by reverse rotation after 1 minute, the operation of the stirring unit 112 is stopped and left to stand for 30 minutes to 1 hour.
Next, the pump of the supernatant transfer unit 121 operates to transfer the supernatant component to the treated water tank 120 , and the pump of the sludge transfer unit 151 operates to transfer the sediment component to the sludge tank 150 .
At this time, the pump of the sludge transfer unit 151 repeats the intermittent operation of running for 10 seconds and stopping for 20 seconds until the pump of the supernatant transfer unit 121 stops working.
Then, the sludge remaining in the bottom of the raw water tank 110 is stirred for about 20 seconds, and then the pump of the sludge transfer unit 151 is continuously operated to transfer all the contents remaining in the raw water tank 110 to the sludge tank 150 .
By alternately performing the above-described treatment in the two raw water tanks 110, it is possible to keep a predetermined amount of liquid in the treated water tank 120 at all times, and to efficiently perform the subsequent continuous treatment.

処理水槽１２０に貯留された液体成分は、第１処理水移送ユニット１３１のポンプによって第１濾過槽１３０に移送される。
この時、わずかに残留する固体成分が汚泥として処理水槽１２０の底部に沈殿しても混じらないよう、処理水槽１２０の底部より５００ｍｍ上方から取水するのが望ましい。
また、１年に２回程度メンテナンスとして、処理水槽１２０の底部に沈殿した汚泥を汚泥槽１５０に移送するのが望ましい。
第１濾過槽１３０を通過した液体成分は、第２処理水移送ユニット１４１のポンプによって第２濾過槽１４０に移送される。
第２濾過槽１４０から排出される処理水は、大幅にＢＯＤ値が低下しており、その水を牛舎内パーラーの洗浄水として再利用することも可能であり、そのまま放流することも可能となる。 The liquid component stored in the treated water tank 120 is transferred to the first filtration tank 130 by the pump of the first treated water transfer unit 131 .
At this time, it is desirable to take in water from above the bottom of the treated water tank 120 by 500 mm so that even if a small amount of remaining solid components settles on the bottom of the treated water tank 120, they will not be mixed.
Moreover, it is desirable to transfer the sludge that has settled on the bottom of the treated water tank 120 to the sludge tank 150 as maintenance about twice a year.
The liquid components that have passed through the first filtration tank 130 are transferred to the second filtration tank 140 by the pump of the second treated water transfer unit 141 .
The treated water discharged from the second filtration tank 140 has a significantly reduced BOD value, and the water can be reused as washing water for the barn parlor, and can be discharged as it is. .

本実施形態で処理した結果を以下に示す。

Figure 0007278665000002
The results of processing in this embodiment are shown below.
Figure 0007278665000002

上記の表からも分かる通り、第１濾過槽１３０を通過することでＢＯＤ（生物化学的酸素要求量）、ＣＯＤ（化学的酸素要求量）、ＳＳ（浮遊物質・懸濁物質）、リンのいずれも水質汚濁防止法に基づき環境省の定める一般排水基準を下回る値まで低下し、第２濾過槽１４０を通過することでＳＳ、リンがさらに低下している。 As can be seen from the above table, any of BOD (biochemical oxygen demand), COD (chemical oxygen demand), SS (suspended solids), and phosphorus can be also decreased to a value lower than the general waste water standard set by the Ministry of the Environment based on the Water Pollution Control Law.

１００ ・・・ 排水処理システム
１１０ ・・・ 原水槽
１１１ ・・・ 排水導入ユニット
１１２ ・・・ 撹拌ユニット
１１５ ・・・ 汚泥桝
１２０ ・・・ 処理水槽
１２１ ・・・ 上澄移送ユニット
１２５ ・・・ 汚泥桝
１３０ ・・・ 第１濾過槽
１３１ ・・・ 第１処理水移送ユニット
１３５ ・・・ 底部配管
１４０ ・・・ 第２濾過槽
１４５ ・・・ 底部配管
１４１ ・・・ 第２処理水移送ユニット
１５０ ・・・ 汚泥槽
１５１ ・・・ 第１汚泥移送ユニット
１５２ ・・・ 第２汚泥移送ユニット DESCRIPTION OF SYMBOLS 100... Waste water treatment system 110... Raw water tank 111... Waste water introduction unit 112... Stirring unit 115... Sludge box 120... Treated water tank 121... Supernatant transfer unit 125... Sludge box 130 First filtration tank 131 First treated water transfer unit 135 Bottom piping 140 Second filtration tank 145 Bottom piping 141 Second treated water transfer unit DESCRIPTION OF SYMBOLS 150... Sludge tank 151... 1st sludge transfer unit 152... 2nd sludge transfer unit

Claims (5)

畜舎から排出される洗浄廃水の排水を分離、浄化処理する排水処理システムであって、
排水が導入され、沈殿分離が行われる複数の原水槽と、
前記原水槽の沈殿成分が汚泥移送ユニットによって導入される汚泥槽と、
排水の上澄成分が上澄移送ユニットによって導入される処理水槽と、
前記処理水槽の上澄成分が第１処理水移送ユニットによって導入される第１濾過槽と、
前記第１濾過槽を通過した液体成分が第２処理水移送ユニットによって導入される第２濾過槽とを有し、
前記第１濾過槽と前記第２濾過槽は、同一の濾過材を有することを特徴とする排水処理システム。 A wastewater treatment system for separating and purifying wastewater from cleaning wastewater discharged from livestock barns ,
a plurality of raw water tanks into which waste water is introduced and sedimentation separation is performed;
a sludge tank into which sedimentary components of the raw water tank are introduced by a sludge transfer unit;
a treatment tank into which the supernatant component of the waste water is introduced by a supernatant transfer unit;
a first filtration tank into which a supernatant component of the treated water tank is introduced by a first treated water transfer unit;
a second filtration tank into which the liquid component that has passed through the first filtration tank is introduced by a second treated water transfer unit;
A waste water treatment system , wherein the first filtration tank and the second filtration tank have the same filtering material . 前記第１濾過槽及び前記第２濾過槽は、濾過材として多孔質化した木質砕片を有することを特徴とする請求項１に記載の排水処理システム。 2. The wastewater treatment system according to claim 1, wherein said first filter tank and said second filter tank have porous wood chips as a filter material. 前記汚泥槽は、前記原水槽の底部よりも下に配置されていることを特徴とする請求項１に記載の排水処理システム。 2. The wastewater treatment system according to claim 1 , wherein said sludge tank is arranged below the bottom of said raw water tank. 前記複数の原水槽は、凝集剤を投入して撹拌する撹拌ユニットを有することを特徴とする請求項１に記載の排水処理システム。 2. The wastewater treatment system according to claim 1 , wherein said plurality of raw water tanks have a stirring unit for charging and stirring a coagulant. 前記撹拌ユニットは、導入された排水が原水槽に満たされると排水の導入を停止して所定時間撹拌を行うように構成された撹拌制御部を有することを特徴とする請求項４に記載の排水処理システム。 5. The waste water according to claim 4 , wherein the stirring unit has a stirring control section configured to stop the introduction of waste water and perform stirring for a predetermined time when the raw water tank is filled with the introduced waste water. processing system.
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Publication number Priority date Publication date Assignee Title
JP3087366U (en) 2002-01-18 2002-08-02 國友 中川 Livestock urine and barn wastewater purification equipment
JP2005144339A (en) 2003-11-17 2005-06-09 Sanwa Seisakusho:Kk Method and equipment for treating organic sludge

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JPS51148666A (en) * 1975-06-16 1976-12-21 Kotobuki Kogyo Kk An automatic waste solution treatment apparatus
JPH0731113U (en) * 1993-11-15 1995-06-13 順一郎 田宮 Muddy water treatment equipment
JPH07327535A (en) * 1994-06-03 1995-12-19 Okinawa Pref Gov Keizai Nogyo Kyodo Kumiai Rengokai Waste-disposing system for domestic animals

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Publication number Priority date Publication date Assignee Title
JP3087366U (en) 2002-01-18 2002-08-02 國友 中川 Livestock urine and barn wastewater purification equipment
JP2005144339A (en) 2003-11-17 2005-06-09 Sanwa Seisakusho:Kk Method and equipment for treating organic sludge

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