JPH04305287A - Water treating equipment - Google Patents
Water treating equipmentInfo
- Publication number
- JPH04305287A JPH04305287A JP3068303A JP6830391A JPH04305287A JP H04305287 A JPH04305287 A JP H04305287A JP 3068303 A JP3068303 A JP 3068303A JP 6830391 A JP6830391 A JP 6830391A JP H04305287 A JPH04305287 A JP H04305287A
- Authority
- JP
- Japan
- Prior art keywords
- aeration tank
- reverse osmosis
- external pressure
- pressure type
- osmosis membrane
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000012528 membrane Substances 0.000 claims abstract description 39
- 238000005273 aeration Methods 0.000 claims abstract description 30
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 21
- 239000000203 mixture Substances 0.000 abstract 2
- 239000010802 sludge Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 244000005700 microbiome Species 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は下水道や産業廃水などの
廃水を浄化処理する水処理設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water treatment equipment for purifying wastewater such as sewerage and industrial wastewater.
【０００２】0002
【従来の技術】従来、下水道や産業廃水などの原水を浄
化処理する水処理設備としては、図２に示すようなもの
がある。図２において、曝気槽１に供給された原水２は
微生物によって有機物が酸化分解処理されて後に、活性
汚泥とともに混合溶液として沈殿池３に送られる。また
、沈殿池３においては、沈殿する活性汚泥４と上澄みの
二次処理水５とに分離され、活性汚泥４が曝気槽１に戻
されるとともに、二次処理水５が凝集沈殿池６に送られ
る。この凝集沈殿池６において二次処理水５に含まれる
浮遊物等が凝集剤の凝集作用により大部分がフロックと
なって沈降するが、ここで除去出来なかった一部のフロ
ックは、この後に続く砂濾過池７の濾過層で除去されて
三次処理水８となって逆浸透膜分離装置９に送られる。
そして、逆浸透膜分離装置９において、逆浸透膜１０を
透過した液体分は塩類や色度成分が除去された清澄な脱
塩水１１として取り出され、逆浸透膜１０を透過しなか
った塩類や色度成分を含む濃縮液１２が分離排出される
。2. Description of the Related Art Conventionally, water treatment equipment for purifying raw water such as sewerage and industrial wastewater is shown in FIG. In FIG. 2, raw water 2 supplied to an aeration tank 1 undergoes oxidation and decomposition treatment of organic matter by microorganisms, and then is sent to a settling tank 3 as a mixed solution together with activated sludge. In the settling tank 3, the activated sludge 4 is separated into precipitated secondary treated water 5, and the activated sludge 4 is returned to the aeration tank 1, while the secondary treated water 5 is sent to the coagulation settling tank 6. It will be done. In this coagulation-sedimentation tank 6, most of the suspended matter contained in the secondary treated water 5 settles as flocs due to the coagulation effect of the flocculant, but some flocs that could not be removed here continue. It is removed by the filtration layer of the sand filter 7 and becomes tertiary treated water 8, which is sent to the reverse osmosis membrane separation device 9. Then, in the reverse osmosis membrane separation device 9, the liquid that has passed through the reverse osmosis membrane 10 is taken out as clear demineralized water 11 from which salts and color components have been removed. A concentrated liquid 12 containing alcoholic components is separated and discharged.
【０００３】0003
【発明が解決しようとする課題】しかし、上記した従来
の構成においては、処理に必要な装置数も多くなり、そ
のため操作も複雑になり、広い敷地面積を要するのみな
らず建設コスト，ランニングコストも高くなる問題があ
った。[Problems to be Solved by the Invention] However, in the conventional configuration described above, the number of devices required for processing is large, and therefore the operation is complicated, and not only does it require a large site area, but also construction costs and running costs are high. There was a problem with the price increasing.
【０００４】本発明は上記課題を解決するもので、設備
の簡略化を図りながら原水を処理することができ、従来
より建設費の安い，敷地面積のせまい水処理設備を提供
することを目的とする。[0004] The present invention solves the above-mentioned problems, and aims to provide water treatment equipment with a small site area, which can treat raw water while simplifying the equipment, and which has a lower construction cost than before. do.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に本発明は、原水を逆浸透膜処理する工程において、前
段に曝気槽を設け、この曝気槽内の混合溶液中に濾過用
膜装置を浸漬して設け、この濾過用膜装置の下部に散気
装置を設け、前記濾過用膜装置を通して曝気槽内の混合
溶液から濾過水を取り出すための吸引ポンプを曝気槽外
に設け、この吸引ポンプの吐出側に連通して逆浸透装置
を設けた構成としたものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a step in which raw water is treated with a reverse osmosis membrane, in which an aeration tank is provided at the front stage, and a filtration membrane device is added to the mixed solution in the aeration tank. An aeration device is provided at the bottom of this filtration membrane device, and a suction pump is provided outside the aeration tank for taking out filtered water from the mixed solution in the aeration tank through the filtration membrane device. A reverse osmosis device is provided in communication with the discharge side of the pump.
【０００６】[0006]
【作用】上記した構成により、濾過用膜装置を通して曝
気槽内の活性汚泥混合溶液を吸引ポンプで吸引し、濾過
用膜装置による精密濾過によって活性汚泥混合溶液中に
含まれる有機物質、浮遊物、微生物などの固体分からな
る濁質を分離する。そして、濾過用膜装置を透過した処
理水を吸引ポンプによって逆浸透装置に直接供給し、逆
浸透膜透過液を浄水として取り出す。したがって、従来
の水処理設備に較べて簡略な設備で微生物処理と膜分離
を行うことができ、このことによって設備費も安価とな
り、かつランニグコストも安価となる。[Operation] With the above configuration, the activated sludge mixed solution in the aeration tank is sucked by the suction pump through the filtration membrane device, and the organic substances and suspended matter contained in the activated sludge mixed solution are removed by precision filtration by the filtration membrane device. Separates suspended matter consisting of solids such as microorganisms. Then, the treated water that has passed through the filtration membrane device is directly supplied to the reverse osmosis device by a suction pump, and the reverse osmosis membrane permeated liquid is taken out as purified water. Therefore, microbial treatment and membrane separation can be performed with simpler equipment than conventional water treatment equipment, which reduces equipment costs and running costs.
【０００７】また、原水が無機系の物質を含む廃水であ
る場合には、曝気槽内において微生物反応はなく単なる
懸濁物質が溜められた状態となり、懸濁物質が曝気攪拌
動力を受けながら曝気槽内に浸積された膜により効率的
に除去されることになり、この濾過水が逆浸透膜処理を
受けることになる。In addition, when the raw water is wastewater containing inorganic substances, there is no microbial reaction in the aeration tank, and suspended matter is simply accumulated, and the suspended matter is aerated while receiving the aeration stirring power. It will be efficiently removed by the membrane immersed in the tank, and this filtered water will undergo reverse osmosis membrane treatment.
【０００８】[0008]
【実施例】以下本発明の一実施例を図面に基づいて説明
する。図１において、曝気槽２１は原水２０の供給源に
連通して設けられており、曝気槽２１の内部には外圧型
セラミックフィルター２３が活性汚泥混合溶液２２中に
浸漬して配置されている。この外圧型セラミックフィル
ター２３は複数の円筒状のセラミックチューブ２４で形
成されており、曝気槽２１の外部に設けた吸引ポンプ２
５の吸入側がセラミックチューブ２４の内部に連通して
いる。また、外圧型セラミックフィルター２３の下方に
位置して散気装置２６が配置されており、散気装置２６
は曝気槽２１の外部に設けたブロワー２７の吐出側に連
通している。そして、逆浸透膜分離装置２８は逆浸透膜
２９によって内部が濃縮液側と透過液側に仕切られ、濃
縮液入口側に吸引ポンプ２５の吐出側が連通している。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, an aeration tank 21 is provided in communication with a supply source of raw water 20, and an external pressure type ceramic filter 23 is placed inside the aeration tank 21 so as to be immersed in an activated sludge mixed solution 22. This external pressure type ceramic filter 23 is formed of a plurality of cylindrical ceramic tubes 24, and is equipped with a suction pump 2 provided outside the aeration tank 21.
The suction side of 5 communicates with the inside of the ceramic tube 24. Further, an air diffuser 26 is arranged below the external pressure type ceramic filter 23.
is in communication with the discharge side of a blower 27 provided outside the aeration tank 21. The inside of the reverse osmosis membrane separation device 28 is partitioned into a concentrate side and a permeate side by a reverse osmosis membrane 29, and the discharge side of the suction pump 25 communicates with the concentrate inlet side.
【０００９】以下、上記構成における作用について説明
する。曝気槽２１に貯留された活性汚泥混合溶液２２を
外圧型セラミックフィルター２３を通して吸引ポンプ２
５で吸引し、外圧型セラミックフィルター２３による精
密濾過によって活性汚泥混合溶液２２に含まれる有機物
質、浮遊物、微生物などの固形分からなる濁質をセラミ
ックチューブ２４の表面で分離する。また、ブロワー２
７によって供給される空気３０を散気装置２６から散気
し、散気された空気３０のエアリフト作用によって生じ
る上昇攪拌流の剪断力により、セラミックチューブ２４
の外表面に付着するゲル層を除去してセラミックチュー
ブ２４の濾過の目詰まりを防止する。[0009] The operation of the above configuration will be explained below. The activated sludge mixed solution 22 stored in the aeration tank 21 is passed through the external pressure type ceramic filter 23 to the suction pump 2
5, and by precision filtration using an external pressure type ceramic filter 23, suspended solids such as organic substances, suspended matter, and microorganisms contained in the activated sludge mixed solution 22 are separated on the surface of the ceramic tube 24. Also, blower 2
The air 30 supplied by 7 is diffused from the aeration device 26, and the shear force of the upward stirring flow generated by the air lift action of the diffused air 30 causes the ceramic tube 24 to
The gel layer adhering to the outer surface of the ceramic tube 24 is removed to prevent clogging of the filtration of the ceramic tube 24.
【００１０】そして、外圧型セラミックフィルター２３
を透過した処理水３１を吸引ポンプ２５によって逆浸透
膜分離装置２８の濃縮液側に供給し、逆浸透膜２９を透
過した透過液を浄水３２として取り出して再利用系に供
給する。また、逆浸透膜２９を透過しなかった塩類や色
度成分等を含む処理水３１の一部を濃縮液３３として次
の処理工程に排出する。[0010] Then, an external pressure type ceramic filter 23
The treated water 31 that has passed through the reverse osmosis membrane 29 is supplied to the concentrated liquid side of the reverse osmosis membrane separation device 28 by the suction pump 25, and the permeated liquid that has passed through the reverse osmosis membrane 29 is taken out as purified water 32 and supplied to the reuse system. Further, a part of the treated water 31 containing salts, chromaticity components, etc. that did not pass through the reverse osmosis membrane 29 is discharged as a concentrated liquid 33 to the next treatment step.
【００１１】したがって、従来の水処理設備に較べて簡
略な設備で水処理することができ、原水量の増加に対し
ては曝気槽２１の内部に浸漬する外圧型セラミックフィ
ルター２３の膜面積の拡張、すなわちセラミックチュー
ブ２４の増設および吸引ポンプ２５の吸入量の増加と逆
浸透膜の面積の拡張によって容易に対応することができ
る。Therefore, water can be treated with simpler equipment than conventional water treatment equipment, and in response to an increase in the amount of raw water, the membrane area of the external pressure type ceramic filter 23 immersed inside the aeration tank 21 can be expanded. That is, this can be easily addressed by adding more ceramic tubes 24, increasing the suction amount of the suction pump 25, and expanding the area of the reverse osmosis membrane.
【００１２】0012
【発明の効果】以上述べたように本発明によれば、逆浸
透装置の前処理を行う設備に、曝気槽へ浸漬する濾過用
膜装置を用いることにより、従来の水処理設備に較べて
簡略な設備で水処理することができ、原水量の増加に対
しては曝気槽内に浸漬する濾過用膜装置の膜面積の拡張
と逆浸透膜の膜面積の拡張によって容易に対応すること
ができる。Effects of the Invention As described above, according to the present invention, by using a filtration membrane device immersed in an aeration tank in the pretreatment equipment for reverse osmosis equipment, it is simpler than conventional water treatment equipment. Water can be treated with standard equipment, and increases in the amount of raw water can be easily handled by expanding the membrane area of the filtration membrane device immersed in the aeration tank and the membrane area of the reverse osmosis membrane. .
【図１】本発明の一実施例を示す水処理設備の全体構成
図である。FIG. 1 is an overall configuration diagram of water treatment equipment showing one embodiment of the present invention.
【図２】従来の水処理設備の全体構成図である。FIG. 2 is an overall configuration diagram of a conventional water treatment facility.
２１ 曝気槽 ２２ 活性汚泥混合溶液 ２３ 外圧型セラミックフィルター ２４ セラミックチューブ ２５ 吸引ポンプ ２８ 逆浸透膜分離装置 ２９ 逆浸透膜 21 Aeration tank 22 Activated sludge mixed solution 23 External pressure type ceramic filter 24 Ceramic tube 25 Suction pump 28 Reverse osmosis membrane separation device 29 Reverse osmosis membrane
Claims (1)
、前段に曝気槽を設け、この曝気槽内の混合溶液中に濾
過用膜装置を浸漬して設け、この濾過用膜装置の下部に
散気装置を設け、前記濾過用膜装置を通して曝気槽内の
混合溶液から濾過水を取り出すための吸引ポンプを曝気
槽外に設け、この吸引ポンプの吐出側に連通して逆浸透
装置を設けたことを特徴とする水処理設備。Claim 1: In the process of treating raw water with a reverse osmosis membrane, an aeration tank is provided at the front stage, a filtration membrane device is immersed in a mixed solution in the aeration tank, and a filtration membrane device is provided under the filtration membrane device. A suction pump for extracting filtered water from the mixed solution in the aeration tank through the filtration membrane device is provided outside the aeration tank, and a reverse osmosis device is provided in communication with the discharge side of this suction pump. Water treatment equipment featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3068303A JPH04305287A (en) | 1991-04-01 | 1991-04-01 | Water treating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3068303A JPH04305287A (en) | 1991-04-01 | 1991-04-01 | Water treating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04305287A true JPH04305287A (en) | 1992-10-28 |
Family
ID=13369894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3068303A Pending JPH04305287A (en) | 1991-04-01 | 1991-04-01 | Water treating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04305287A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0695722A1 (en) | 1994-08-03 | 1996-02-07 | Sharp Kabushiki Kaisha | Apparatus and method for waste water treatment utilizing aerobic and anaerobic microorganisms |
| US5702604A (en) * | 1995-09-06 | 1997-12-30 | Sharp Kabushiki Kaisha | Apparatus and method for waste water treatment utilizing granular sludge |
| WO1998037950A1 (en) * | 1997-02-25 | 1998-09-03 | Zenon Environmental, Inc. | Portable reverse osmosis unit for producing drinking water |
| WO1998054096A1 (en) * | 1997-05-27 | 1998-12-03 | Hitachi Zosen Corporation | System for recovering and treating waste water |
| JPH1157434A (en) * | 1997-08-26 | 1999-03-02 | Nkk Corp | Drain treatment device and drain treating method and clean water treatment installation |
| EP1323680A1 (en) * | 2001-12-11 | 2003-07-02 | Ionics Italba S.P.A. | Method for recovering nitrates from percolating waters coming from solid urban waste materials |
| JP2008073622A (en) * | 2006-09-21 | 2008-04-03 | Toray Ind Inc | Method and apparatus for producing recycled water |
| WO2010103731A1 (en) * | 2009-03-10 | 2010-09-16 | 株式会社日立製作所 | Water-treating method and water-treating member |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460367A (en) * | 1987-08-31 | 1989-03-07 | Kubota Ltd | Microorganism treating device |
| JPH0286818A (en) * | 1988-09-22 | 1990-03-27 | Kubota Ltd | Solid-liquid separator |
| JPH02237693A (en) * | 1989-03-10 | 1990-09-20 | Kubota Ltd | Sewage treating device |
| JPH0368498A (en) * | 1989-08-09 | 1991-03-25 | Ebara Infilco Co Ltd | Treatment of organic sewage |
-
1991
- 1991-04-01 JP JP3068303A patent/JPH04305287A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460367A (en) * | 1987-08-31 | 1989-03-07 | Kubota Ltd | Microorganism treating device |
| JPH0286818A (en) * | 1988-09-22 | 1990-03-27 | Kubota Ltd | Solid-liquid separator |
| JPH02237693A (en) * | 1989-03-10 | 1990-09-20 | Kubota Ltd | Sewage treating device |
| JPH0368498A (en) * | 1989-08-09 | 1991-03-25 | Ebara Infilco Co Ltd | Treatment of organic sewage |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0695722A1 (en) | 1994-08-03 | 1996-02-07 | Sharp Kabushiki Kaisha | Apparatus and method for waste water treatment utilizing aerobic and anaerobic microorganisms |
| US5578214A (en) * | 1994-08-03 | 1996-11-26 | Sharp Kabushiki Kaisha | Apparatus and method for waste water treatment utilizing aerobic and anaerobic microorganisms and capable of exhaust gas treatment |
| US5702604A (en) * | 1995-09-06 | 1997-12-30 | Sharp Kabushiki Kaisha | Apparatus and method for waste water treatment utilizing granular sludge |
| WO1998037950A1 (en) * | 1997-02-25 | 1998-09-03 | Zenon Environmental, Inc. | Portable reverse osmosis unit for producing drinking water |
| WO1998054096A1 (en) * | 1997-05-27 | 1998-12-03 | Hitachi Zosen Corporation | System for recovering and treating waste water |
| US6379548B1 (en) | 1997-05-27 | 2002-04-30 | Hitachi Zosen Corporation | System for recovering and treating waste water |
| JPH1157434A (en) * | 1997-08-26 | 1999-03-02 | Nkk Corp | Drain treatment device and drain treating method and clean water treatment installation |
| EP1323680A1 (en) * | 2001-12-11 | 2003-07-02 | Ionics Italba S.P.A. | Method for recovering nitrates from percolating waters coming from solid urban waste materials |
| JP2008073622A (en) * | 2006-09-21 | 2008-04-03 | Toray Ind Inc | Method and apparatus for producing recycled water |
| WO2010103731A1 (en) * | 2009-03-10 | 2010-09-16 | 株式会社日立製作所 | Water-treating method and water-treating member |
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