JPH05269466A - Apparatus to provide reproduced water from sewage - Google Patents
Apparatus to provide reproduced water from sewageInfo
- Publication number
- JPH05269466A JPH05269466A JP9860392A JP9860392A JPH05269466A JP H05269466 A JPH05269466 A JP H05269466A JP 9860392 A JP9860392 A JP 9860392A JP 9860392 A JP9860392 A JP 9860392A JP H05269466 A JPH05269466 A JP H05269466A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sewage
- membrane
- pipe
- membrane module
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、下水処理場，ポンプ場
等の下水処理施設内もしくはそこから外部に導かれた配
管内の圧力と水流を利用して下水または下水処理水を膜
分離し、高品質の再生水を得るための装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention separates sewage or sewage-treated water into membranes by utilizing the pressure and water flow in sewage treatment facilities such as sewage treatment plants and pumping stations, or in pipes led to the outside thereof. , A device for obtaining high quality reclaimed water.
【０００２】[0002]
【従来の技術】下水処理施設内で洗浄用水，散水用水，
修景・親水用その他の用途に応じた雑用水を必要とする
ときには、水資源の節約から下水または下水処理水を再
生利用することが好ましく、その場合、装置が簡単で操
作も容易である膜分離を利用した膜処理装置を使用する
ことが有利であり、それには下水処理施設内で使用する
雑用水の総量を賄う膜処理装置を１ヶ所に建設し、その
膜透過水を配管によって各使用場所に配水する方法が考
えられる。しかしながら、上記の方法は、給配水のため
の配管、動力費用が必要であり、膜処理装置の規模も大
きくなり、大規模でスケールメリットが出る場合に適す
るが、膜処理装置の設置場所，機械装置，給配水配管，
動力用の電気設備などが必要であり、さらに設置後は機
械装置などを維持管理するための人手を必要とする。2. Description of the Related Art Cleaning water, sprinkling water in a sewage treatment facility,
When water for miscellaneous use such as for landscape and hydrophilic use is required, it is preferable to reuse sewage or sewage treatment water to save water resources. In that case, the device is simple and the operation is easy. It is advantageous to use a membrane treatment device that utilizes separation, in which a membrane treatment device that covers the total amount of miscellaneous water used in the sewage treatment facility is constructed in one place, and the membrane permeated water is used by pipes for each use. A method of distributing water to the place is possible. However, the above method requires pipes for water supply and distribution, power costs, and the scale of the membrane treatment device is large, which is suitable for a large scale advantage. Equipment, water supply and distribution piping,
Electrical equipment for power is required, and after installation, manpower is required to maintain and manage machinery and other equipment.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、従来法のも
つ問題点を克服し、特段の設置場所，機械装置，電気設
備等を必要とせず、日常的な維持管理もほとんど必要な
く、特別な動力なしに、再生水が必要な場所で、必要な
ときに必要な量だけ得ることができる簡単で安価な下水
から再生水を得る装置を提供するものでる。DISCLOSURE OF THE INVENTION The present invention overcomes the problems of the conventional method, requires no special installation place, mechanical device, electrical equipment, etc. (EN) An apparatus for obtaining reclaimed water from sewage, which is simple and inexpensive, and which can obtain the required amount when and where the reclaimed water is needed, without using a large amount of power.
【０００４】[0004]
【課題を解決するための手段】本発明は、下水または下
水処理水の配管もしくは該配管からのバイパス配管の途
中またはそれにバイパスして膜モジュールを配置し、該
膜モジュールの入口および出口を開閉弁を介して前記配
管内に連通するとともに、膜透過水を系外に導出して再
生水として利用し、濃縮水を前記配管内に返送するよう
にしたことを特徴とする下水から再生水を得る装置であ
る。DISCLOSURE OF THE INVENTION According to the present invention, a membrane module is arranged in the middle of a bypass pipe of sewage or sewage treatment water or a bypass pipe from the pipe or by bypassing the bypass pipe, and an inlet / outlet valve for the inlet and outlet of the membrane module. A device for obtaining reclaimed water from sewage, which is characterized in that the permeated water is led out of the system and used as reclaimed water, and concentrated water is returned to the pipe while communicating with the inside of the pipe through is there.
【０００５】[0005]
【作用】本発明の装置を、下水または下水処理水が加圧
送水されている配管から取り出したバイパス配管内に設
置した場合、入口側のバルブの操作によって加圧送水さ
れる下水または下水処理水の適当量を導き、その水流と
圧力によって膜モジュールで膜分離し、膜透過水（再生
水）と濃縮水とを得る。膜モジュールにかかる水量，圧
力はバルブの操作だけによって調節でき、必要量の再生
水を取り出すことができる。一方、濃縮水は下水または
下水処理水の配管中にもどす。このような膜処理におい
ては、特別の維持管理を必要とせず、膜の閉塞が進行し
て水が出にくくなったら、バルブ操作によって圧力を徐
々に増加させる。なお、膜モジュールの前後の圧力をみ
て、差圧が限界に達した場合には、洗浄液循環配管に
酸，アルカリ，または界面活性剤などの洗浄用薬液を循
環させて膜モジュールを洗浄し、処理性能を回復させ
る。使用する膜は、再生水の用途に応じて、精密ろ過
膜，限外ろ過膜または逆浸透膜とし、膜モジュールとし
ては、中空糸型，スパイラル型，管型，平面膜型等を用
いることができるが、モジュールにまとめることが容易
でありかつ膜面積を広くとることができるスパイラル型
や中空糸型膜モジュールが好適である。膜モジュールの
配置場所としては、前記のようなバイパス配管内に限ら
ず、下水または下水処理水の配管内の一部にしたり、あ
るいは該配管またはバイパス配管にぶら下げることがで
きる。以上のように簡単な装置で、簡単な操作と維持管
理によって、必要なときに必要な量だけ衛生的な再生水
が得られ、１日の使用水量がおおよそ１０m3以下のよう
な小規模な用途にとっては、イニシアルコストおよびラ
ンニングコストを大幅に節減でき、得られた高品質の再
生水は様々な用途に利用できる。When the apparatus of the present invention is installed in the bypass pipe taken out from the pipe in which the sewage or the sewage-treated water is pressure-fed, the sewage or the sewage-treated water which is pressure-fed by the operation of the valve on the inlet side. The appropriate amount of water is introduced, and the membrane is subjected to membrane separation by the water flow and pressure to obtain membrane permeated water (regenerated water) and concentrated water. The amount and pressure of water applied to the membrane module can be adjusted only by operating the valve, and the required amount of reclaimed water can be taken out. On the other hand, the concentrated water is returned to the sewage or sewage treatment water piping. In such a membrane treatment, no special maintenance is required, and when the membrane is closed and water becomes difficult to come out, the pressure is gradually increased by the valve operation. When the pressure difference between the front and rear of the membrane module reaches the limit, the cleaning liquid such as acid, alkali, or surfactant is circulated in the cleaning liquid circulation pipe to clean the membrane module, Restores performance. The membrane to be used may be a microfiltration membrane, an ultrafiltration membrane or a reverse osmosis membrane depending on the use of the reclaimed water, and the membrane module may be a hollow fiber type, a spiral type, a tubular type, a flat membrane type or the like. However, a spiral wound type or hollow fiber type membrane module is preferable because it can be easily assembled into a module and can have a large membrane area. The location of the membrane module is not limited to the bypass pipe as described above, but may be a part of the pipe of the sewage or the sewage treatment water, or may be hung on the pipe or the bypass pipe. As described above, with the simple equipment, sanitary reclaimed water can be obtained when and when needed by simple operation and maintenance, and small-scale applications where the daily water consumption is approximately 10 m 3 or less. Therefore, the initial cost and running cost can be significantly reduced, and the obtained high-quality reclaimed water can be used for various purposes.
【０００６】[0006]
【実施例】本発明の一実施例を図面を参照して説明すれ
ば、図１において、下水処理施設内に張り巡らされた、
下水または下水処理水が５Kgf/cm2 程度に加圧され送水
される原水配管１から取り出したバイパス配管２中に精
密ろ過膜，限外ろ過膜，逆浸透膜などの膜モジュール３
が配置され、膜モジュール３の再生水流出管４は系外に
導かれている。バイパス配管２の入口と出口間の原水配
管１には、弁Ｖ１が設けられ、バイパス管２の入口には
弁Ｖ２が、また出口には弁Ｖ３が設けられている。ま
た、バイパス管２内には、膜モジュール３の入口側に圧
力計Ｐ１が、また出口側に圧力計Ｐ２が設けられ、さら
に膜モジュール３の再生水流出管４には圧力計Ｐ３が設
けられている。５は、膜洗浄用の薬液タンク６と洗浄ポ
ンプ７を備えた洗浄液循環配管で、膜モジュール３の入
口側のバイパス配管２の洗浄液入口８とは、弁Ｖ４を介
して、また膜モジュール３の出口側のバイパス配管２の
洗浄液出口９とは弁Ｖ５を介して連結されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings. In FIG.
Membrane module 3 such as microfiltration membrane, ultrafiltration membrane, reverse osmosis membrane, etc. in bypass pipe 2 taken from raw water pipe 1 where sewage or treated sewage water is pressurized and sent to about 5 Kgf / cm 2.
And the regenerated water outflow pipe 4 of the membrane module 3 is guided to the outside of the system. The raw water pipe 1 between the inlet and the outlet of the bypass pipe 2 is provided with a valve V1, the inlet of the bypass pipe 2 is provided with a valve V2, and the outlet is provided with a valve V3. In the bypass pipe 2, a pressure gauge P1 is provided on the inlet side of the membrane module 3, a pressure gauge P2 is provided on the outlet side, and a pressure gauge P3 is provided on the reclaimed water outflow pipe 4 of the membrane module 3. There is. Reference numeral 5 is a cleaning liquid circulation pipe provided with a chemical liquid tank 6 for cleaning the membrane and a cleaning pump 7, and the cleaning liquid inlet 8 of the bypass pipe 2 on the inlet side of the membrane module 3 is connected via a valve V4 and also to the membrane module 3. The cleaning liquid outlet 9 of the bypass pipe 2 on the outlet side is connected via a valve V5.
【０００７】このような装置の使用方法は次のとおりで
ある。 再生水を使用したいとき、原水配管１の弁Ｖ１を半開
とし、弁Ｖ２および弁Ｖ３を開にしてバイパス配管２内
に原水（下水または下水処理水）を通水する。このと
き、膜処理に必要な水量，流速，圧力は、管内の原水の
ものを利用し、弁Ｖ２，Ｖ３の開度調節によって調節す
るが、逆浸透膜など、使用する膜によってはインライン
型の増圧用補助ポンプを用いて増圧する。膜モジュール
３によって、原水は再生水と濃縮水とに分離され、再生
水は再生水流出管４から系外に取り出されて雑用水とし
て利用され、濃縮水は弁Ｖ３を通って原水配管１にもど
り排出される。 再生水を使用しないとき、弁Ｖ１を開、弁Ｖ２および
Ｖ３を閉にして、膜モジュール３内に原水が入らないよ
うにする。これにより、原水は流れが妨げられることな
く、すべて原水配管１中を流過する。 薬品で膜を洗浄して処理性能を回復させるとき、圧力
計Ｐ１，Ｐ２，Ｐ３のそれぞれの指針ｐ1 ，ｐ2 ，ｐ3
から、膜モジュール３にかかる有効圧Ｐを計算する。即
ち、Ｐ＝〔（ｐ1 ＋ｐ2 ）／２〕−ｐ3 が所定の値を上
回ったとき、あるいはＰ＝ｐ1 −ｐ2 が所定の値を上回
ったときには、薬品タンク６に酸，アルカリ，界面活性
剤などの薬液を入れ、洗浄ポンプ７で洗浄液循環配管５
内を循環させ、膜モジュール３を洗浄する。このときは
弁Ｖ２，Ｖ３は閉じたままで、、弁Ｖ４，Ｖ５を開とす
る。洗浄終了後、廃液は薬品タンク６に集め別途処理す
る。次に、弁Ｖ２，Ｖ３を半開にし、弁Ｖ４，Ｖ５を閉
として膜モジュール３を原水洗浄する。この後は前記の
ように再生水を取水できる。The method of using such a device is as follows. When it is desired to use the reclaimed water, the valve V1 of the raw water pipe 1 is opened halfway, and the valves V2 and V3 are opened to pass the raw water (sewage or sewage treated water) into the bypass pipe 2. At this time, the amount of water, the flow velocity, and the pressure necessary for the membrane treatment are adjusted by adjusting the opening degree of the valves V2 and V3 using the raw water in the pipe, but depending on the membrane used, such as a reverse osmosis membrane, an in-line type is used. Increase the pressure using the auxiliary pressure boosting pump. The membrane module 3 separates the raw water into reclaimed water and concentrated water, the reclaimed water is taken out of the reclaimed water outflow pipe 4 and used as miscellaneous water, and the concentrated water is discharged back to the raw water pipe 1 through the valve V3. It When reclaimed water is not used, valve V1 is opened and valves V2 and V3 are closed to prevent raw water from entering the membrane module 3. As a result, all raw water flows through the raw water pipe 1 without being obstructed. When cleaning the membrane with a chemical to recover the treatment performance, the pointers p 1 , p 2 , p 3 of the pressure gauges P 1 , P 2 , P 3 respectively.
From this, the effective pressure P applied to the membrane module 3 is calculated. That is, when P = [(p 1 + p 2 ) / 2] −p 3 exceeds a predetermined value, or when P = p 1 −p 2 exceeds a predetermined value, the chemical tank 6 is exposed to acid or alkali. ， Put a chemical such as surfactant into the cleaning pump 7 and use the cleaning pump 7
The inside is circulated to wash the membrane module 3. At this time, the valves V2 and V3 remain closed, and the valves V4 and V5 are opened. After the cleaning, the waste liquid is collected in the chemical tank 6 and separately processed. Next, the valves V2 and V3 are opened halfway and the valves V4 and V5 are closed to wash the membrane module 3 with raw water. After this, the regenerated water can be taken in as described above.
【０００８】次に、逆浸透膜，限外ろ過膜，精密ろ過を
用いた各膜モジュールを用いた場合の原水および各モジ
ュールで得られた再生水の水質を表１に示す。Next, Table 1 shows the water quality of raw water and the regenerated water obtained by each module when each membrane module using a reverse osmosis membrane, an ultrafiltration membrane, and microfiltration is used.
【０００９】[0009]
【発明の効果】以上述べたように、本発明によれば以下
に列挙するような顕著な効果を奏するものである。 必要な場所で、必要なときに、必要な量だけ、衛生的
な再生水が得られる。 特別に装置の設置場所を必要としない。 送水配管に簡単に取り付けることができ、特別の機械
装置，電気設備か必要ない。 原水，再生水および排水用の配管がほとんど必要な
い。 膜の種類の選択により、洗浄用，散水用，修景・親水
用などの現場の用途に応じた水質の再生水が得られる。 膜の薬品洗浄時以外は、特に維持管理を必要としな
い。 膜によって分離された濃縮水は既存の配管にもどし、
希釈・再利用できる。 小規模の膜処理装置で、省資源、省エネルギー上非常
に有効である。As described above, according to the present invention, the following remarkable effects are obtained. Sanitary reclaimed water is obtained where and when and where it is needed and in the required amount. No special equipment installation place is required. It can be easily attached to the water supply pipe and does not require special mechanical equipment or electrical equipment. Almost no need for piping for raw water, reclaimed water and drainage. Depending on the type of membrane selected, reclaimed water with water quality suitable for cleaning, sprinkling, scenic / hydrophilic, etc. can be obtained. No maintenance is required except when cleaning the membrane with chemicals. The concentrated water separated by the membrane is returned to the existing pipe,
Can be diluted and reused. It is a small-scale membrane processing device and is very effective in saving resources and energy.
【００１０】[0010]
【表１】 [Table 1]
【図１】本発明の一実施例を示す構成説明図である。FIG. 1 is a structural explanatory view showing an embodiment of the present invention.
１ 原水配管 ２ バイパス配管 ３ 膜モジュール ４ 再生水流出管 ５ 洗浄液循環配管 ６ 薬液タンク ７ 洗浄ポンプ ８ 洗浄液入口 ９ 洗浄液出口 Ｖ１ 弁 Ｖ２ 弁 Ｖ３ 弁 Ｖ４ 弁 Ｖ５ 弁 Ｐ１ 圧力計 Ｐ２ 圧力計 Ｐ３ 圧力計 1 Raw water pipe 2 Bypass pipe 3 Membrane module 4 Reclaimed water outflow pipe 5 Cleaning liquid circulation pipe 6 Chemical liquid tank 7 Cleaning pump 8 Cleaning liquid inlet 9 Cleaning liquid outlet V1 valve V2 valve V3 valve V4 valve V5 valve P1 pressure gauge P2 pressure gauge P3 pressure gauge
Claims (2)
配管からのバイパス配管の途中またはそれにバイパスし
て膜モジュールを配置し、該膜モジュールの入口および
出口を開閉弁を介して前記配管内に連通するとともに、
膜透過水を系外に導出して再生水として利用し、濃縮水
を前記配管内に返送するようにしたことを特徴とする下
水から再生水を得る装置。1. A sewage or a sewage treatment water pipe or a bypass pipe from the pipe, or in the middle of the bypass pipe, a membrane module is disposed, and an inlet and an outlet of the membrane module are connected to the inside of the pipe through an opening / closing valve. Along with
An apparatus for obtaining reclaimed water from sewage, characterized in that the membrane-permeated water is led out of the system and used as reclaimed water, and the concentrated water is returned into the pipe.
管を併設した請求項１記載の下水から再生水を得る装
置。2. An apparatus for obtaining reclaimed water from sewage according to claim 1, wherein cleaning liquid circulation piping is provided in front of and behind the membrane module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09860392A JP3305354B2 (en) | 1992-03-26 | 1992-03-26 | Equipment to obtain reclaimed water from sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09860392A JP3305354B2 (en) | 1992-03-26 | 1992-03-26 | Equipment to obtain reclaimed water from sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05269466A true JPH05269466A (en) | 1993-10-19 |
| JP3305354B2 JP3305354B2 (en) | 2002-07-22 |
Family
ID=14224188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09860392A Expired - Fee Related JP3305354B2 (en) | 1992-03-26 | 1992-03-26 | Equipment to obtain reclaimed water from sewage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3305354B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1019130C2 (en) * | 2001-10-08 | 2003-04-09 | Waterleiding Mij Overijssel N | Method and device for purifying surface water. |
| JP2010221195A (en) * | 2009-03-25 | 2010-10-07 | Hitachi Plant Technologies Ltd | Sewage treatment apparatus and sewage reuse system |
-
1992
- 1992-03-26 JP JP09860392A patent/JP3305354B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1019130C2 (en) * | 2001-10-08 | 2003-04-09 | Waterleiding Mij Overijssel N | Method and device for purifying surface water. |
| WO2003031342A1 (en) * | 2001-10-08 | 2003-04-17 | Waterleiding Maatschappij Overijssel N.V. | Method and apparatus for the purification of surface water |
| JP2010221195A (en) * | 2009-03-25 | 2010-10-07 | Hitachi Plant Technologies Ltd | Sewage treatment apparatus and sewage reuse system |
| US8647502B2 (en) | 2009-03-25 | 2014-02-11 | Hitachi, Ltd. | Sewage treatment apparatus and sewage reuse system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3305354B2 (en) | 2002-07-22 |
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