JPH04305288A - Water treating equipment - Google Patents
Water treating equipmentInfo
- Publication number
- JPH04305288A JPH04305288A JP3068304A JP6830491A JPH04305288A JP H04305288 A JPH04305288 A JP H04305288A JP 3068304 A JP3068304 A JP 3068304A JP 6830491 A JP6830491 A JP 6830491A JP H04305288 A JPH04305288 A JP H04305288A
- Authority
- JP
- Japan
- Prior art keywords
- water
- filter
- external pressure
- pressure type
- type ceramic
- 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 74
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000000746 purification Methods 0.000 claims abstract description 6
- 239000002351 wastewater Substances 0.000 claims abstract description 3
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000001112 coagulating effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 11
- 238000010992 reflux Methods 0.000 abstract description 4
- 230000003311 flocculating effect Effects 0.000 abstract description 3
- 238000011001 backwashing Methods 0.000 abstract 3
- 238000005406 washing Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000005708 Sodium hypochlorite Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は、河川などの原水を取水
して衛生的な水に浄化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 that takes raw water from rivers and the like and purifies it into sanitary water.
【0002】0002
【従来の技術】従来の水処理設備は、たとえば図4に示
すようなものであった。図4において、取水口1から汲
み上げられる原水は除塵機2を通して着水井3に供給さ
れ、着水井3で必要に応じて消毒用の次亜塩素酸ソーダ
が次亜塩素酸ソーダ貯留槽4から供給される。また、着
水井3から混和池5に送られた原水に対してカセイソー
ダ貯留槽6ならびに凝集剤貯留槽7から供給されるアル
カリ剤および凝集剤,凝集助剤が混和される。2. Description of the Related Art Conventional water treatment equipment is, for example, as shown in FIG. In Figure 4, raw water pumped up from the water intake 1 is supplied to the landing well 3 through the dust remover 2, and at the landing well 3, sodium hypochlorite for disinfection is supplied from the sodium hypochlorite storage tank 4 as needed. be done. Further, an alkali agent, a flocculant, and a flocculating aid supplied from the caustic soda storage tank 6 and the flocculant storage tank 7 are mixed with the raw water sent from the landing well 3 to the mixing pond 5.
【0003】そして、混和池5にて凝集剤・ 凝集助剤
およびアルカリ剤を混和された原水はフロック形成池8
に送られ、原水中のそのままでは重力沈降しがたい浮遊
物質の粒子が凝集されてフロックに形成される。さらに
、フロックを含む原水は薬品沈殿池9に送られてフロッ
クを沈殿除去され、上澄水が二次混和池10に送られる
。また、二次混和池10ではカセイソーダ貯留槽6なら
びに凝集剤貯留槽7から供給されるアルカリ剤および凝
集剤・ 凝集助剤が混和される。[0003]Then, the raw water mixed with the flocculant, flocculation aid and alkaline agent in the mixing pond 5 is transferred to the flocculation pond 8.
The particles of suspended solids that are difficult to settle by gravity in the raw water are aggregated and formed into flocs. Further, the raw water containing flocs is sent to a chemical settling tank 9 where the flocs are precipitated and removed, and the supernatant water is sent to a secondary mixing tank 10. Further, in the secondary mixing pond 10, an alkaline agent and a flocculant/flocculation aid supplied from the caustic soda storage tank 6 and the flocculant storage tank 7 are mixed.
【0004】そして、薬品沈殿池9または二次混和池1
0から急速濾過池11に送られた上澄水は濾材の濾過作
用によって濁質を捕捉され、濾材を透過した処理水は次
亜塩素酸ソーダ貯留槽4から供給される消毒用の次亜塩
素酸ソーダを添加された後に浄水池12に送られる。ま
た、処理水は必要に応じて、オゾン接触槽13および活
性炭濾過池14よりなる高度処理設備に送られ、微量有
機物・ 有機塩素化合物・ アンモニア性窒素・ 臭気
成分などを除去される。[0004] Then, the chemical settling tank 9 or the secondary mixing tank 1
The supernatant water sent from 0 to the rapid filtration basin 11 has suspended solids captured by the filtration action of the filter medium, and the treated water that has passed through the filter medium is treated with hypochlorous acid for disinfection, which is supplied from the sodium hypochlorite storage tank 4. After adding soda, it is sent to the water purification pond 12. Furthermore, the treated water is sent to an advanced treatment facility consisting of an ozone contact tank 13 and an activated carbon filtration basin 14, as necessary, to remove trace organic matter, organic chlorine compounds, ammonia nitrogen, odor components, and the like.
【0005】そして、急速濾過池11および活性炭濾過
池14で除去された濁質は逆洗水によって洗い出され、
濁質を含む逆洗水は排水池15を経て着水井3に戻され
る。また、薬品沈殿池9で沈降した汚泥は排泥池16を
経て濃縮槽17に送られ、濃縮槽17における上澄水は
排水池15に送られる。[0005] The suspended solids removed in the rapid filtration basin 11 and the activated carbon filtration basin 14 are washed out by backwash water,
Backwash water containing turbidity is returned to the landing well 3 via the drainage pond 15. Further, the sludge settled in the chemical settling tank 9 is sent to the thickening tank 17 via the sludge tank 16, and the supernatant water in the thickening tank 17 is sent to the drainage tank 15.
【0006】[0006]
【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、急速濾過池11の逆洗水と活性炭濾
過池14の逆洗水と濃縮槽17の分離液の少なくとも一
つが排水池15を経て着水井3に戻されるために、急速
濾過池11および活性炭濾過池14で捕捉された濁質さ
らには濃縮槽17からリークした濁質が再度フロック形
成池8や薬品沈殿池9における負荷として作用する問題
があった。However, in the conventional configuration described above, at least one of the backwash water of the rapid filtration basin 11, the backwash water of the activated carbon filtration basin 14, and the separated liquid of the concentration tank 17 is discharged from the drainage basin 15. The suspended solids captured in the rapid filtration basin 11 and the activated carbon filtration basin 14 as well as the suspended solids leaked from the thickening tank 17 are returned to the landing well 3 through the filtration basin 8 and the chemical settling basin 9 as a load. There was a problem at play.
【0007】本発明は上記課題を解決するもので、急速
濾過池等における逆洗水をその濁質を除去した状態で着
水井に戻すことができる水処理設備を提供することを目
的とする。[0007] The present invention solves the above-mentioned problems, and an object thereof is to provide water treatment equipment that can return backwash water from a rapid filtration basin or the like to a receiving well with its turbidity removed.
【0008】[0008]
【課題を解決するための手段】上記課題を解決するため
に、本発明の水処理設備は、水源から原水を取水し、薬
品混和、凝集沈殿、濾過等の浄水工程を通して原水を浄
化し、浄化された処理水を浄水池に貯留する工程におい
て、工程の途中において発生する排水を処理するために
設けられた処理槽に浸漬された外圧型セラミックフィル
ターと、この外圧型セラミックフィルターの下部に設け
られた散気装置と、処理槽外に設けられて吸入側が外圧
型セラミックフィルターに連通する吸引ポンプとを備え
た構成としたものである。[Means for Solving the Problems] In order to solve the above problems, the water treatment equipment of the present invention takes raw water from a water source, purifies the raw water through water purification processes such as chemical mixing, coagulation sedimentation, and filtration. In the process of storing treated water in a water purification pond, an external pressure type ceramic filter is immersed in a treatment tank provided to treat wastewater generated during the process, and a filter installed at the bottom of this external pressure type ceramic filter is used. The system is equipped with an air diffuser and a suction pump provided outside the processing tank and whose suction side communicates with an external pressure type ceramic filter.
【0009】[0009]
【作用】上記した構成により、処理槽内の逆洗水を吸引
ポンプで外圧型セラミックフィルターを通して吸引する
ことによって、外圧型セラミックフィルターによる精密
濾過により逆洗水等に含まれる固形分の濁質が捕捉され
て処理槽内に残留し、外圧型セラミックフィルターを透
過した液体分が清澄な処理水となって処理槽の外部に抽
出され、逆洗水等の還流経路を通って取水設備に戻され
る。したがって、逆洗水等に含まれる濁質が取水設備に
還流せず、混和・ 凝集設備、沈殿池、濾過設備におい
て再度負荷として作用することが防止される。[Function] With the above configuration, the backwash water in the treatment tank is sucked through the external pressure ceramic filter using the suction pump, and the solids contained in the backwash water are removed by precision filtration using the external pressure ceramic filter. The liquid that is captured and remains in the treatment tank and passes through the external pressure type ceramic filter becomes clear treated water that is extracted outside the treatment tank and returned to the water intake equipment through a reflux route such as backwash water. . Therefore, the suspended solids contained in backwash water, etc. do not flow back to the water intake equipment, and are prevented from acting as a load on the mixing/coagulation equipment, sedimentation tank, and filtration equipment again.
【0010】0010
【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。なお、図4に示した構成と同様の作用を行う部材
については同一番号を付して説明を省略する。図1〜図
3において、精密濾過装置21は急速濾過池11から排
出される逆洗水等の還流経路、または排水池15内に介
装されている。そして、精密濾過装置21は、排水槽1
5を兼ねる処理槽22と、処理槽22の内部に貯留され
る逆洗水23等に浸漬して配置された外圧型セラミック
フィルター24とを有しており、外圧型セラミックフィ
ルター24は円筒状に形成された外圧型セラミックチュ
ーブ25の複数からなり、セラミックチューブ25の内
部は処理槽22の外部に設けた吸引ポンプ26の吸入側
に連通している。また、吸引ポンプ26の吐出側は取水
設備、例えば着水井3に連通している。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Note that members that perform the same functions as those in the configuration shown in FIG. 4 are given the same numbers, and description thereof will be omitted. In FIGS. 1 to 3, the precision filtration device 21 is installed in a recirculation path for backwash water discharged from the rapid filtration basin 11 or in the drainage basin 15. Then, the precision filtration device 21
5, and an external pressure type ceramic filter 24 which is placed immersed in backwash water 23 etc. stored inside the processing tank 22, and the external pressure type ceramic filter 24 has a cylindrical shape. It consists of a plurality of external pressure type ceramic tubes 25 formed, and the inside of the ceramic tube 25 communicates with the suction side of a suction pump 26 provided outside the processing tank 22. Further, the discharge side of the suction pump 26 communicates with water intake equipment, for example, the water landing well 3 .
【0011】そして、外圧型セラミックフィルター24
の下方に位置して散気装置27が設けられており、散気
装置27は処理槽22の外部に設けたブロワー装置28
の吐出側に連通している。また、処理槽22の底部は汚
泥引抜ポンプ29の吸入側に連通している。[0011] Then, an external pressure type ceramic filter 24
An air diffuser 27 is provided below the processing tank 22.
It communicates with the discharge side of the Further, the bottom of the treatment tank 22 communicates with the suction side of the sludge drawing pump 29.
【0012】以下、上記構成における作用について説明
する。急速濾過池11と活性炭濾過池14から処理槽2
2に供給された逆洗水23は外圧型セラミックフィルタ
ー24を通して吸引ポンプ26で吸引され、外圧型セラ
ミックフィルター24による精密濾過によって逆洗水2
3に含まれる固体分からなる濁質が捕捉される。また、
散気装置27から散気された空気30のエアリフト作用
によって上昇攪拌流Aが生じ、上昇攪拌流Aの剪断力に
よって外圧型セラミックフィルター24の各セラミック
チューブ25の表面に付着するゲル層が除去される。そ
して、外圧型セラミックフィルター24を透過した液体
分は清澄な処理水31となって抽出され、排水池15を
経て着水井3等に還流される。また、捕捉された濁質は
汚泥吸引ポンプ29によって処理槽22の外部に排出さ
れる。したがって、逆洗水23に含まれる濁質が着水井
3に還流せず、混和池5、フロック形成池8、薬品沈殿
池9、二次混和池10、急速濾過池11において再度負
荷として作用することが防止される。[0012] The operation of the above configuration will be explained below. From the rapid filtration basin 11 and the activated carbon filtration basin 14 to the treatment tank 2
The backwash water 23 supplied to the backwash water 2 passes through the external pressure type ceramic filter 24 and is sucked by the suction pump 26, and is purified by the external pressure type ceramic filter 24 through precision filtration.
The suspended matter consisting of the solids contained in 3 is captured. Also,
The air lift action of the air 30 diffused from the aeration device 27 generates an upward stirring flow A, and the shearing force of the upward stirring flow A removes the gel layer adhering to the surface of each ceramic tube 25 of the external pressure type ceramic filter 24. Ru. The liquid that has passed through the external pressure type ceramic filter 24 is extracted as clear treated water 31, and is returned to the receiving well 3 and the like via the drainage pond 15. Further, the captured suspended matter is discharged to the outside of the treatment tank 22 by the sludge suction pump 29. Therefore, the suspended solids contained in the backwash water 23 do not flow back to the landing well 3, and act as a load again in the mixing pond 5, floc formation pond 8, chemical settling pond 9, secondary mixing pond 10, and rapid filtration pond 11. This will be prevented.
【0013】当然のことながら、排水池と処理槽は一体
のものとしても良く、別個の槽をパイプで接続しても機
能的には何ら変わらないことは言うまでもない。Naturally, the drainage pond and the treatment tank may be integrated, and it goes without saying that there is no functional difference even if separate tanks are connected by a pipe.
【0014】[0014]
【発明の効果】以上述べたように本発明によれば、精密
濾過装置の外圧型セラミックフィルターにより逆洗水中
に含まれる固体分の濁質を捕捉することにより、外圧型
セラミックフィルターを透過した清澄な処理水を逆洗水
の還流経路を通って取水設備に戻すことができ、逆洗水
に含まれる濁質が混和・ 凝集設備、沈殿池、濾過設備
において再度負荷として作用することを防止できる。Effects of the Invention As described above, according to the present invention, the solid turbidity contained in the backwash water is captured by the external pressure type ceramic filter of the precision filtration device, thereby reducing the clarification that has passed through the external pressure type ceramic filter. The treated water can be returned to the intake equipment through the backwash water reflux route, and the turbidity contained in the backwash water can be prevented from acting as a load on the mixing/coagulation equipment, sedimentation tank, and filtration equipment again. .
【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】同実施例における精密濾過装置の全体構成図で
ある。FIG. 2 is an overall configuration diagram of a precision filtration device in the same embodiment.
【図3】同実施例における外圧型セラミックフィルター
の濾過作用を示す模式図である。FIG. 3 is a schematic diagram showing the filtration action of the external pressure type ceramic filter in the same example.
【図4】従来の水処理装置の全体構成図である。FIG. 4 is an overall configuration diagram of a conventional water treatment device.
21 精密濾過装置 22 処理槽 23 逆洗水 24 外圧型セラミックフィルター 25 セラミックチューブ 26 吸引ポンプ 27 散気装置 28 ブロワー装置 21 Precision filtration device 22 Processing tank 23 Backwash water 24 External pressure type ceramic filter 25 Ceramic tube 26 Suction pump 27 Air diffuser 28 Blower device
Claims (1)
集沈殿、濾過等の浄水工程を通して原水を浄化し、浄化
された処理水を浄水池に貯留する工程において、工程の
途中において発生する排水を処理するために設けられた
処理槽に浸漬された外圧型セラミックフィルターと、こ
の外圧型セラミックフィルターの下部に設けられた散気
装置と、処理槽外に設けられて吸入側が外圧型セラミッ
クフィルターに連通する吸引ポンプとを備えたことを特
徴とする水処理設備。Claim 1: Wastewater generated during the process of taking raw water from a water source, purifying the raw water through water purification processes such as mixing with chemicals, coagulating sedimentation, and filtration, and storing the purified treated water in a water purification pond. an external pressure type ceramic filter immersed in a treatment tank installed to treat A water treatment facility characterized by being equipped with a suction pump that communicates with the water treatment facility.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3068304A JPH04305288A (en) | 1991-04-01 | 1991-04-01 | Water treating equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3068304A JPH04305288A (en) | 1991-04-01 | 1991-04-01 | Water treating equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04305288A true JPH04305288A (en) | 1992-10-28 |
Family
ID=13369923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3068304A Pending JPH04305288A (en) | 1991-04-01 | 1991-04-01 | Water treating equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04305288A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005152694A (en) * | 2003-11-20 | 2005-06-16 | Kurita Water Ind Ltd | Water cleaning treatment facility |
CN102500144A (en) * | 2011-11-09 | 2012-06-20 | 华北电力科学研究院(西安)有限公司 | Precision processing system for condensed water and chemical cleaning method for filter element of precision processing system |
-
1991
- 1991-04-01 JP JP3068304A patent/JPH04305288A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005152694A (en) * | 2003-11-20 | 2005-06-16 | Kurita Water Ind Ltd | Water cleaning treatment facility |
CN102500144A (en) * | 2011-11-09 | 2012-06-20 | 华北电力科学研究院(西安)有限公司 | Precision processing system for condensed water and chemical cleaning method for filter element of precision processing system |
CN102500144B (en) * | 2011-11-09 | 2014-02-19 | 华北电力科学研究院(西安)有限公司 | Precision processing system for condensed water and chemical cleaning method for filter element of precision processing system |
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