JPH0271899A - Waste water treating device - Google Patents
Waste water treating deviceInfo
- Publication number
- JPH0271899A JPH0271899A JP63222066A JP22206688A JPH0271899A JP H0271899 A JPH0271899 A JP H0271899A JP 63222066 A JP63222066 A JP 63222066A JP 22206688 A JP22206688 A JP 22206688A JP H0271899 A JPH0271899 A JP H0271899A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- fermenter
- treated water
- purified water
- separated
- 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.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000008213 purified water Substances 0.000 claims abstract description 12
- 239000010802 sludge Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims description 18
- 238000000855 fermentation Methods 0.000 claims description 11
- 230000004151 fermentation Effects 0.000 claims description 11
- 238000004065 wastewater treatment Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 20
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 3
- 239000001569 carbon dioxide Substances 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 description 8
- 238000005187 foaming Methods 0.000 description 6
- 239000006260 foam Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、廃水を嫌気性処理する発酵槽を設け、前記発
酵槽からの処理水を閉空間内で汚泥と浄化水とに分離す
る固液分離装置を設けてある廃水処理装置に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention provides a fermentation tank for anaerobically treating wastewater, and a solid state system that separates the treated water from the fermentation tank into sludge and purified water in a closed space. The present invention relates to a wastewater treatment device equipped with a liquid separation device.
従来の上記廃水処理装置では、第２図に示すように、嫌
気性処理によって発生する発生ガスを、処理水から回収
するガス回収路（９）を、前記発酵槽（１）に接続しで
あるだけであった。In the conventional wastewater treatment apparatus, as shown in FIG. 2, a gas recovery path (9) for recovering gas generated by anaerobic treatment from treated water is connected to the fermentation tank (1). It was only.
しかし、処理水中の汚泥及び廃水の濃度が高い場合には
、処理水の粘性が高く、しかも、ガス発生量が多いため
に、嫌気性処理で発生する発生ガスによって発泡現象が
生じ、ガス回収路（９）から泡と共に処理水が、発酵槽
（１）の外部に不測に流出してしまうことがあり、廃水
処理環境を悪化させる危険性があった。However, when the concentration of sludge and wastewater in the treated water is high, the viscosity of the treated water is high and the amount of gas generated is large, so the gas generated during anaerobic treatment causes a bubbling phenomenon, and the gas recovery path (9), the treated water together with foam may unexpectedly flow out of the fermenter (1), posing the risk of deteriorating the wastewater treatment environment.
本発明の目的は、発酵槽内で発泡現象が生じにくくする
点にある。An object of the present invention is to make it difficult for foaming to occur in the fermenter.
本発明の廃水処理装置の特徴構成は、嫌気性処理によっ
て発生する発生ガスを、処理水中に溶解するために、発
酵槽を加圧状態に維持する手段を設け、固液分離装置で
分離した浄化水から、それに溶解している発生ガスを分
離して除去する気液分離槽を設けてあることにあり、そ
の作用効果は、次の通りである。The characteristic configuration of the wastewater treatment apparatus of the present invention is that in order to dissolve gas generated by anaerobic treatment into the treated water, a means for maintaining the fermentation tank in a pressurized state is provided, and a solid-liquid separator separates and purifies the gas. A gas-liquid separation tank is provided to separate and remove generated gas dissolved in water from the water, and its effects are as follows.
つまり、嫌気性処理によって発生する発生ガスは、加圧
状態に維持された発酵１内で処理水中に溶解されるため
に、処理水中の汚泥及び廃水の濃度が高くても、発生ガ
スによる発泡現象が防止され、処理水中に溶解した発生
ガスは、固液分離装置で分離した粘性の低い浄化水から
、気液分離槽で分離して除去するために、浄化水では発
泡現象は生じない。In other words, the generated gas generated by anaerobic treatment is dissolved in the treated water in the fermentation 1 which is maintained in a pressurized state, so even if the concentration of sludge and wastewater in the treated water is high, the generated gas will cause foaming. Since the generated gas dissolved in the treated water is separated and removed in the gas-liquid separation tank from the purified water with low viscosity separated by the solid-liquid separator, no foaming phenomenon occurs in the purified water.
従って、処理水が泡と共に外部に不測に流出してしまう
ことなく発生ガスを回収でき、その上、処理水が発泡し
ても発酵槽から外部に処理水が流出しないように、例え
ば従来の廃水処理装置で、処理量を変えずに発酵槽の容
積を太きくして、その中の空間部分を多くすることも考
えられるが、この場合、発泡する体積以上に、発酵槽の
空間部分を設定しなければならないために、発酵槽が大
型化する欠点があるのに対し、本発明は、気液分離槽で
発泡せずに発生ガスを回収できるために、発酵槽及び気
液分離槽の空間容積を小さくでき、結局、廃水処理装置
全体を大型化することなく、安価な設備費で廃水処理環
境を良好に維持できるようになった。Therefore, the generated gas can be recovered without causing the treated water to unexpectedly leak out with foam, and in addition, even if the treated water foams, the treated water will not flow out of the fermenter to the outside. It is also possible to increase the volume of the fermenter in the processing equipment without changing the throughput and increase the space within it, but in this case, the space in the fermenter must be set to be larger than the foaming volume. However, the present invention has the disadvantage that the fermenter becomes large in size due to the large size of the fermenter.However, in the present invention, the generated gas can be recovered without foaming in the gas-liquid separation tank, so the spatial volume of the fermenter and the gas-liquid separation tank is As a result, it has become possible to maintain a good wastewater treatment environment at low equipment costs without increasing the size of the entire wastewater treatment equipment.
次に、本発明の実施例を、図面に基づいて説明する。 Next, embodiments of the present invention will be described based on the drawings.
第１図に示すように、有機性廃水を３０〜６０ｇ／βの
高濃度の嫌気性菌で嫌気性処理する発酵槽（１）を設け
、発酵槽（１）からの処理水を閉空間内で汚泥と浄化水
とに固液分離する膜分離装置（２）を設け、膜分離装置
（２）で分離した汚泥を、発酵槽（１）に返送する返送
路（３）を設け、返送路（３）に余剰汚泥引抜き路（４
）を接続し、嫌気性処理によって発生するメタンガス（
Ｃ）！、）や炭酸ガス（ＣＯ２）等の発生ガスを、処理
水中に溶解するために、発生ガスの発生圧を利用して発
酵槽（１）を約５ｋｇＦ／ｃｉの加圧状態に維持する圧
力調整弁（５）を設け、膜分離装置（２）で分離した浄
化水から、それに溶解している発生ガスを大気開放状態
で分離して除去する気液分離槽（６）を設けて廃水処理
装置を構成しである。As shown in Figure 1, a fermentation tank (1) is installed to anaerobically treat organic wastewater with anaerobic bacteria at a high concentration of 30 to 60 g/β, and the treated water from the fermentation tank (1) is kept in a closed space. A membrane separation device (2) for solid-liquid separation into sludge and purified water is provided, and a return path (3) is provided to return the sludge separated by the membrane separation device (2) to the fermentation tank (1). (3) Excess sludge extraction channel (4
) and connect the methane gas (
C)! , ) and carbon dioxide (CO2) into the treated water, pressure adjustment is performed to maintain the fermenter (1) at a pressurized state of approximately 5 kgF/ci using the pressure of the generated gases. The wastewater treatment equipment is equipped with a gas-liquid separation tank (6) which is equipped with a valve (5) and which separates and removes dissolved gases from the purified water separated by the membrane separation device (2) in an open state to the atmosphere. It consists of:
尚、前記発酵槽（１）から膜分離装置（２）へ処理水を
供給する供給路（７）には、処理水を膜ろ過のために膜
分離装置（２）へ加圧供給する押込みポンプ（８）を設
けてあり、つまり、圧力調整弁（５）によって発酵槽（
１）内が、高圧に維持されていれば、押込みポンプ（８
）によるポンプ動力は少くてすむ。The supply path (7) that supplies treated water from the fermenter (1) to the membrane separation device (2) includes a push pump that supplies the treated water under pressure to the membrane separation device (2) for membrane filtration. (8), that is, the fermenter (
1) If the internal pressure is maintained at high pressure, the push pump (8
) requires less pump power.
前記圧力調整弁（５）による加圧状態は、約５ｋｇＦ／
ｃｎ（に限定されるものではなく、発酵槽内の発泡状況
と微生物反応の状況に応じて、設定する。The pressurized state by the pressure regulating valve (5) is approximately 5 kgF/
It is not limited to cn (and is set depending on the foaming situation in the fermenter and the microbial reaction situation.
前記圧力調整弁（５）を発酵槽（１）に特に設けずに、
発酵槽（１）を完全に密閉して加圧状態を維持してあっ
ても良く、それらは、発酵槽（１）を加圧状態に維持す
る手段を総称する。Without specifically providing the pressure regulating valve (5) in the fermenter (1),
The fermenter (1) may be completely sealed and maintained in a pressurized state, and these are collectively referred to as means for maintaining the fermenter (1) in a pressurized state.
前記膜分離装置（２）は、発酵槽（１）とは別に設けて
あっても、又は、発酵槽（１）内に浸漬してあっても良
く、また、膜分離装置（２）に代えて、他のろ過膜装置
、又は、密閉型の沈殿分離槽であっても良く、それらを
、固液分離装置と総称する。The membrane separator (2) may be provided separately from the fermenter (1) or may be immersed in the fermenter (1), or may be used instead of the membrane separator (2). Alternatively, it may be another filtration membrane device or a closed type sedimentation separation tank, and these are collectively referred to as a solid-liquid separation device.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図面は本発明に係る廃水処理装置の実施例を示し、第１
図は全体概略図、第２図は従来例の全体概略図である。
（１）・・・・・・発酵槽、（２）・・・・・・固液分
離装置、（５）・・・・・・加圧状態維持手段、（６）
・・・・・・気液分離槽。The drawings show an embodiment of the wastewater treatment device according to the present invention.
The figure is an overall schematic diagram, and FIG. 2 is an overall schematic diagram of a conventional example. (1)... Fermentation tank, (2)... Solid-liquid separator, (5)... Pressurized state maintaining means, (6)
...gas-liquid separation tank.
Claims (1)
酵槽（１）からの処理水を閉空間内で汚泥と浄化水とに
分離する固液分離装置（２）を設けてある廃水処理装置
であって、前記嫌気性処理によって発生する発生ガスを
、前記処理水中に溶解するために、前記発酵槽（１）を
加圧状態に維持する手段（５）を設け、前記固液分離装
置（２）で分離した浄化水から、それに溶解している発
生ガスを分離して除去する気液分離槽（６）を設けてあ
る廃水処理装置。 ２、前記加圧状態を維持する手段（５）は、圧力調整弁
である請求項１記載の廃水処理装置。[Scope of Claims] 1. A solid-liquid separation device (1) provided with a fermentation tank (1) for anaerobically treating wastewater and separating treated water from the fermentation tank (1) into sludge and purified water in a closed space. 2), wherein the wastewater treatment apparatus is provided with means (5) for maintaining the fermenter (1) in a pressurized state in order to dissolve gas generated by the anaerobic treatment into the treated water; and a gas-liquid separation tank (6) for separating and removing generated gas dissolved in the purified water separated by the solid-liquid separation device (2). 2. The wastewater treatment apparatus according to claim 1, wherein the means (5) for maintaining the pressurized state is a pressure regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63222066A JPH0271899A (en) | 1988-09-05 | 1988-09-05 | Waste water treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63222066A JPH0271899A (en) | 1988-09-05 | 1988-09-05 | Waste water treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0271899A true JPH0271899A (en) | 1990-03-12 |
Family
ID=16776577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63222066A Pending JPH0271899A (en) | 1988-09-05 | 1988-09-05 | Waste water treating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0271899A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007510540A (en) * | 2003-11-11 | 2007-04-26 | プレセコ オサケ ユキチュア | Method and apparatus for processing organic materials |
| JP2009066513A (en) * | 2007-09-12 | 2009-04-02 | Obihiro Univ Of Agriculture & Veterinary Medicine | Methane fermentation method |
| WO2013146013A1 (en) * | 2012-03-29 | 2013-10-03 | 株式会社クボタ | System and method for treating anaerobic treatment solution |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57190698A (en) * | 1981-05-20 | 1982-11-24 | Mitsubishi Heavy Ind Ltd | Methane fermenting method |
| JPS62234595A (en) * | 1985-12-04 | 1987-10-14 | Meidensha Electric Mfg Co Ltd | Device for treating drainage |
-
1988
- 1988-09-05 JP JP63222066A patent/JPH0271899A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57190698A (en) * | 1981-05-20 | 1982-11-24 | Mitsubishi Heavy Ind Ltd | Methane fermenting method |
| JPS62234595A (en) * | 1985-12-04 | 1987-10-14 | Meidensha Electric Mfg Co Ltd | Device for treating drainage |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007510540A (en) * | 2003-11-11 | 2007-04-26 | プレセコ オサケ ユキチュア | Method and apparatus for processing organic materials |
| US7582467B2 (en) | 2003-11-11 | 2009-09-01 | Preseco Oy | Method and apparatus for processing organic material |
| JP2009066513A (en) * | 2007-09-12 | 2009-04-02 | Obihiro Univ Of Agriculture & Veterinary Medicine | Methane fermentation method |
| WO2013146013A1 (en) * | 2012-03-29 | 2013-10-03 | 株式会社クボタ | System and method for treating anaerobic treatment solution |
| JP2013202602A (en) * | 2012-03-29 | 2013-10-07 | Kubota Corp | System and method for treating anaerobic treatment liquid |
| CN104203834A (en) * | 2012-03-29 | 2014-12-10 | 株式会社久保田 | System and method for treating anaerobic treatment solution |
| EP2835355A4 (en) * | 2012-03-29 | 2015-12-16 | Kubota Kk | System and method for treating anaerobic treatment solution |
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