JPH04317791A - Operating method of raw water concentrating apparatus - Google Patents
Operating method of raw water concentrating apparatusInfo
- Publication number
- JPH04317791A JPH04317791A JP3084297A JP8429791A JPH04317791A JP H04317791 A JPH04317791 A JP H04317791A JP 3084297 A JP3084297 A JP 3084297A JP 8429791 A JP8429791 A JP 8429791A JP H04317791 A JPH04317791 A JP H04317791A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- water
- concentration
- raw water
- flow rate
- 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 182
- 238000011017 operating method Methods 0.000 title 1
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 239000010802 sludge Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 18
- 239000000706 filtrate Substances 0.000 claims description 9
- 230000008719 thickening Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000010865 sewage Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000005273 aeration Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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】本発明は原水濃縮装置の運転方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of operating a raw water concentrator.
【０００２】0002
【従来の技術】下水などの汚泥処理を行う際には、まず
被処理原水を濃縮してその体積を減少させることにより
、その後の処理の容易化を図るのが一般的である。この
ような濃縮のための装置として、最近、セラミック膜な
どの外圧型濾過膜モジュールを用いて原水を濾過するこ
とにより濃縮液を得るようにしたものが提案されている
。2. Description of the Related Art When treating sludge such as sewage, it is common to first concentrate the raw water to be treated to reduce its volume, thereby facilitating subsequent treatment. As an apparatus for such concentration, one has recently been proposed in which a concentrated liquid is obtained by filtering raw water using an external pressure type filtration membrane module such as a ceramic membrane.
【０００３】0003
【発明が解決しようとする課題】しかし、原水を濃縮す
る際には、その後の処理のための設備の容量や能力など
の関係上、濃縮液の濃度ができるだけ一定値となるよう
に制御しなければならないという問題点がある。[Problem to be solved by the invention] However, when concentrating raw water, the concentration of the concentrated liquid must be controlled to be as constant as possible due to the capacity and capacity of the equipment for subsequent treatment. There is a problem that it must be done.
【０００４】そこで本発明はこのような問題点を解決し
、濃縮液の濃度を一定値に制御できるようにすることを
目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and to make it possible to control the concentration of a concentrated liquid to a constant value.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
本発明は、濃縮槽内に外圧型濾過膜モジュールを設置し
てこの外圧型濾過膜モジュールにより生じた濾過水を濃
縮槽外へ取り出すとともに、濾過により濃縮された濃縮
水を濃縮槽外へ取り出すに際し、原水槽の汚泥濃度を一
定として、原水槽から濃縮槽への原水の流量を検出し、
この原水の流量と濃縮水の流量とが一定の比となるよう
にして、これら濾過水と濃縮水とを濃縮槽から取り出す
ものである。[Means for Solving the Problems] In order to achieve the above object, the present invention installs an external pressure type filtration membrane module in a concentration tank, takes out the filtrate produced by this external pressure type filtration membrane module to the outside of the concentration tank, and , when taking out the concentrated water that has been concentrated by filtration out of the thickening tank, the flow rate of raw water from the raw water tank to the thickening tank is detected, with the sludge concentration in the raw water tank being constant;
The filtered water and concentrated water are taken out from the concentration tank such that the flow rate of this raw water and the flow rate of concentrated water are at a constant ratio.
【０００６】また本発明は、原水槽から濃縮槽へ供給さ
れる原水の流量と濃度とを検出し、この原水の流量と濃
度とに応じて、濃縮水の濃度が一定になるような流量の
濾過水を濃縮槽外へ取り出し、かつ濃縮槽の水位が一定
になるように濃縮水を濃縮槽外へ取り出すものである。Further, the present invention detects the flow rate and concentration of raw water supplied from the raw water tank to the concentration tank, and adjusts the flow rate so that the concentration of the concentrated water becomes constant according to the flow rate and concentration of the raw water. Filtered water is taken out of the concentration tank, and concentrated water is taken out of the concentration tank so that the water level in the concentration tank remains constant.
【０００７】さらに本発明は、原水槽から濃縮槽へ供給
される原水の流量と濃度とを検出し、この原水の流量と
濃度とに応じて、所定の濃度とするのに必要な流量の濃
縮水を濃縮槽外へ取り出し、かつ濃縮槽の水位が一定に
なるように濾過水を濃縮槽外へ取り出すものである。Furthermore, the present invention detects the flow rate and concentration of raw water supplied from the raw water tank to the concentration tank, and depending on the flow rate and concentration of raw water, concentrates the flow rate necessary to obtain a predetermined concentration. Water is taken out of the concentration tank, and filtered water is taken out of the concentration tank so that the water level in the concentration tank remains constant.
【０００８】[0008]
【作用】上記のように原水槽の汚泥濃度を一定として、
原水槽から濃縮槽への原水の流量と検出し、この原水の
流量と濃縮水の流量とが一定の比となるようにして、こ
れら濾過水と濃縮水とを濃縮槽から取り出せば、濃縮水
は、この比に応じた一定濃度となる。[Effect] As mentioned above, with the sludge concentration in the raw water tank constant,
The flow rate of raw water from the raw water tank to the concentration tank is detected, and the flow rate of this raw water and the flow rate of concentrated water are set at a certain ratio, and if these filtered water and concentrated water are taken out from the concentration tank, the concentrated water is has a constant concentration according to this ratio.
【０００９】また、原水槽から濃縮槽へ供給される原水
の流量と濃度とを検出し、原水の流量を濃度とに応じて
、濃縮水の濃度が一定になるような流量の濾過水を濃縮
槽外へ取り出し、かつ濃縮槽の水位が一定になるように
濃縮水を濃縮槽外へ取り出すことによっても、濃縮水の
濃度が一定になり、しかも濃縮槽の水位が一定になるよ
うに濃縮水を槽外へ取り出すだけで、所要量の濃縮水の
取り出しが行われる。[0009] Furthermore, the flow rate and concentration of raw water supplied from the raw water tank to the concentration tank are detected, and the flow rate and concentration of the raw water are adjusted according to the concentration to concentrate the filtered water at a flow rate that makes the concentration of the concentrated water constant. By taking the concentrated water out of the tank, and by taking the concentrated water out of the tank so that the water level in the tank becomes constant, the concentration of the concentrated water becomes constant, and the water level in the tank becomes constant. The required amount of concentrated water can be taken out simply by taking it out of the tank.
【００１０】濾過水の代わりに、所定の濃度とするのに
必要な流量の濃縮水を濃縮槽外へ取り出し、かつ濃縮槽
の水位が一定になるように濾過水を濃縮槽外へ取り出し
ても、同様の作用を奏する。[0010] Instead of filtrated water, it is also possible to take out the concentrated water at a flow rate necessary to obtain a predetermined concentration out of the concentrating tank, and to take out the filtrated water out of the concentrating tank so that the water level in the concentrating tank is kept constant. , has a similar effect.
【００１１】[0011]
【実施例】図１は本発明の方法を実施するための第１の
原水濃縮装置の概略構成を示す。ここで１は濃縮槽であ
り、この濃縮槽１には、原水槽２に留貯された原水３が
管路４を通って供給される。管路４には、原水３を供給
するためのポンプ５と、供給される原水３の流量を検出
するための流量計６と、バルブ７とが設けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic configuration of a first raw water concentrator for carrying out the method of the present invention. Here, 1 is a concentration tank, and raw water 3 stored in a raw water tank 2 is supplied to this concentration tank 1 through a pipe 4. The pipe line 4 is provided with a pump 5 for supplying the raw water 3, a flow meter 6 for detecting the flow rate of the supplied raw water 3, and a valve 7.
【００１２】濃縮槽１の内部にはセラミック膜などで構
成された外圧型濾過膜モジュール８が設けられており、
原水３を濾過可能とされている。外圧型濾過膜モジュー
ル８には濾過水の取り出し管９が取り付けられており、
この取り出し管９にはポンプ１０と流量計１１とが設け
られている。外圧型濾過膜モジュール８よりも下方には
散気管１２が設けられ、この散気管１２には槽外におい
てブロワ１３が接続されている。[0012] Inside the concentration tank 1, an external pressure type filtration membrane module 8 made of a ceramic membrane or the like is provided.
It is said that raw water 3 can be filtered. A filtrate water extraction pipe 9 is attached to the external pressure type filtration membrane module 8.
This extraction pipe 9 is provided with a pump 10 and a flow meter 11. An aeration pipe 12 is provided below the external pressure type filtration membrane module 8, and a blower 13 is connected to this aeration pipe 12 outside the tank.
【００１３】濃縮槽１の底部には濃縮水の取り出し管１
４が接続されており、この取り出し管１４には、ポンプ
１５と流量計１６とが設けられている。濃縮槽１には、
槽内の水位を検出するための水位計１７が設けられてい
る。[0013] At the bottom of the concentration tank 1, there is a pipe 1 for taking out the concentrated water.
4 is connected, and this take-out pipe 14 is provided with a pump 15 and a flow meter 16. In the concentration tank 1,
A water level gauge 17 is provided to detect the water level in the tank.
【００１４】１８は制御装置で、各流量計６，１１，１
６および水位計１７からの検出信号を受け取り可能であ
るとともに、バルブ７およびポンプ１０，１５へ制御信
号を送り出し可能である。Reference numeral 18 denotes a control device that controls each flow meter 6, 11, 1.
6 and the water level gauge 17, and can send control signals to the valve 7 and pumps 10 and 15.
【００１５】いま、原水槽２へ供給され、かつ貯留され
ている原水３は、その濃度の変動の幅が小さく、実質的
にその濃度が一定であるとみなされる。このとき、各ポ
ンプ５，１０，１５を運転すると、原水槽２の中の原水
３は濃縮槽１に供給され、外圧型濾過膜モジュール８に
て濾過された濾過水は取り出し管９を通って濃縮槽１の
外へ排出される。濾過水を排出することにより濃縮槽１
の内部で生じた濃縮水は、取り出し管１４を通って濃縮
槽１の外へ排出される。なお、ブロワ１３からの空気が
散気管１２より槽内へ噴出されることによって、槽内の
被処理水の撹拌と外圧型濾過膜モジュール８におけるス
ケーリングの除去とが行われる。[0015] The concentration of the raw water 3 currently supplied to and stored in the raw water tank 2 has a small fluctuation range, and is considered to have a substantially constant concentration. At this time, when each pump 5, 10, 15 is operated, the raw water 3 in the raw water tank 2 is supplied to the concentration tank 1, and the filtrate filtered by the external pressure type filtration membrane module 8 is passed through the takeout pipe 9. It is discharged outside the concentration tank 1. Concentrator 1 by discharging the filtered water
Concentrated water generated inside the tank is discharged to the outside of the concentration tank 1 through the take-out pipe 14. Note that by blowing air from the blower 13 into the tank through the aeration pipe 12, stirring of the water to be treated in the tank and removal of scaling in the external pressure type filtration membrane module 8 are performed.
【００１６】各流量計６，１１，１６からの検出信号を
受け取った制御装置１８は、原水槽２から濃縮槽１への
原水３の流量に応じて、濾過水の流量と濃縮水の流量と
が一定の比となるように、両ポンプ１０，１５を制御す
る。たとえば濾過水と濃縮水との流量比を３：１とする
と、原水３を４倍に濃縮した濃縮液を得ることができる
。すなわち、原水槽２における原水３のＳＳ濃度が１０
０００ｐｐｍで、流量計６で検知される流量が１０ｍ３
／ｈの場合には、濾過水と濃縮水との流量をそれぞれ
７．５ ｍ３ ／ｈ，２．５ ｍ３ ／ｈとして流量比
を３：１とすることにより、濾過水のＳＳ濃度は０ｐｐ
ｍ であるから、濃縮水のＳＳ濃度は４００００ｐｐｍ
となって、原水３が４倍に濃縮されることになる。同様
に、たとえば濾過水と濃縮水との流量をそれぞれ８ｍ３
／ｈ，２ｍ３ ／ｈとして流量比を４：１とすれば、
濃縮水のＳＳ濃度は５００００ｐｐｍとなって、原水が
５倍に濃縮されることになる。The control device 18 receives the detection signals from each of the flowmeters 6, 11, and 16, and adjusts the flow rate of the filtered water and the concentrated water according to the flow rate of the raw water 3 from the raw water tank 2 to the concentration tank 1. Both pumps 10 and 15 are controlled so that the ratio is constant. For example, if the flow rate ratio of filtered water and concentrated water is 3:1, it is possible to obtain a concentrated liquid that is 4 times as concentrated as the raw water 3. That is, the SS concentration of raw water 3 in raw water tank 2 is 10
000ppm, the flow rate detected by the flowmeter 6 is 10m3
/h, by setting the flow rates of filtered water and concentrated water to 7.5 m3/h and 2.5 m3/h, respectively, and setting the flow rate ratio to 3:1, the SS concentration in the filtrated water is 0pp.
m, the SS concentration in the concentrated water is 40,000 ppm.
Therefore, raw water 3 will be concentrated four times. Similarly, for example, the flow rate of filtered water and concentrated water is 8 m3 each.
/h, 2m3 /h and the flow rate ratio is 4:1,
The SS concentration of the concentrated water is 50,000 ppm, and the raw water is concentrated five times.
【００１７】このように原水３の流量と、濾過水および
濃縮水の合計流量とが等しくなるように制御することに
より、濃縮槽１の水位を一定レベルに保つことができ、
濃縮槽１を適正な負荷のもとで運転することが可能とな
る。しかし、何らかの理由により濃縮槽１の水位が変動
した場合には、水位計１７でこれを検出してバルブ７の
開度を調節する。By controlling the flow rate of the raw water 3 and the total flow rate of the filtered water and concentrated water to be equal in this way, the water level in the concentration tank 1 can be maintained at a constant level.
It becomes possible to operate the concentration tank 1 under an appropriate load. However, if the water level in the concentration tank 1 fluctuates for some reason, the water level gauge 17 detects this and adjusts the opening degree of the valve 7.
【００１８】図２は本発明の方法を実施するための第２
の原水濃縮装置の概略構成を示す。ここでは、原水槽２
から濃縮槽１への管路４にさらに濃度計２１を設け、原
水３の濃度が変化する場合に対処している。FIG. 2 shows a second method for carrying out the method of the invention.
The schematic configuration of the raw water concentrator is shown below. Here, raw water tank 2
A concentration meter 21 is further provided in the pipe 4 from the source to the concentration tank 1 to cope with the case where the concentration of the raw water 3 changes.
【００１９】すなわち、原水槽２から濃縮槽１へ供給さ
れる原水３の流量と濃度とを知ることにより、それに応
じて、取り出し管１４から取り出す濃縮水を所定濃度と
するために取り出し管９から取り出すべき濾過水の流量
が一義的に決まる。そこで、流量計６と濃度計２１によ
って原水３の流量と濃度とが検出されたなら、制御装置
１８によって濾過水の所要流量が演算される。そして、
流量計１１で濾過水の流量を検出しながら、ポンプ１０
を制御して上記所要流量になるように調節する。That is, by knowing the flow rate and concentration of the raw water 3 supplied from the raw water tank 2 to the concentration tank 1, the amount of concentrated water taken out from the take-out pipe 9 is adjusted accordingly so that the concentrated water taken out from the take-out pipe 14 has a predetermined concentration. The flow rate of filtrate water to be taken out is uniquely determined. Therefore, when the flow rate and concentration of the raw water 3 are detected by the flow meter 6 and the concentration meter 21, the required flow rate of the filtered water is calculated by the control device 18. and,
While detecting the flow rate of filtered water with the flow meter 11, the pump 10
is controlled so that the above-mentioned required flow rate is achieved.
【００２０】これと同時に濃縮水を取り出すためのポン
プ１５を運転するが、水位計１７により濃縮槽１の水位
を検出し、この水位が一定になるようにポンプ１５を制
御する。こうすることにより、濃縮槽１への供給原水量
と濃縮槽１からの濾過水および濃縮水の取り出し量とが
バランスし、かつ上述のように濾過水の流量は所要値に
制御されているため、計算通りの濃度の濃縮水を取り出
すことができる。したがって、この場合は、濃縮水の取
り出し管１４における流量計は特に必要ではない。At the same time, the pump 15 for taking out the concentrated water is operated, and the water level in the concentration tank 1 is detected by the water level gauge 17, and the pump 15 is controlled so that this water level is kept constant. By doing this, the amount of raw water supplied to the concentration tank 1 and the amount of filtrate and concentrated water taken out from the concentration tank 1 are balanced, and the flow rate of the filtrate is controlled to the required value as described above. , it is possible to extract concentrated water with the calculated concentration. Therefore, in this case, a flow meter in the concentrated water take-out pipe 14 is not particularly required.
【００２１】図３は本発明の方法を実施するための第３
の原水濃縮装置の概略構成を示す。原水３の流量と濃度
とに応じて濃縮水の濃度を一定に制御することは、図２
の場合のように濾過水の流量を決めることのほかに、濃
縮水自体の所要流量を計算することによっても行うこと
ができる。すなわち、原水３の流量と濃度に対応して所
要濃度にするために必要な濃縮水の流量が、制御装置１
８により演算される。そして、流量計１６で濃縮水の流
量を検出しながら、ポンプ１５を制御して上記所要流量
になるように調節する。FIG. 3 shows a third method for carrying out the method of the present invention.
The schematic configuration of the raw water concentrator is shown below. Controlling the concentration of concentrated water to a constant level according to the flow rate and concentration of raw water 3 is shown in Figure 2.
In addition to determining the flow rate of the filtered water as in the case of , this can also be done by calculating the required flow rate of the concentrated water itself. In other words, the flow rate of concentrated water necessary to achieve the required concentration in accordance with the flow rate and concentration of raw water 3 is determined by the control device 1.
8. Then, while detecting the flow rate of concentrated water with the flow meter 16, the pump 15 is controlled to adjust the flow rate to the above-mentioned required flow rate.
【００２２】一方、ここでは、濃縮槽１の水位が一定に
なるように濾過水を取り出すためのポンプ１０を運転す
ることによって、濃縮槽１における原水３の供給と濾過
水および濃縮水の取り出し量とがバランスされる。濾過
水の取り出し管９における流量計は特に必要ではない。On the other hand, here, by operating the pump 10 for taking out filtrate water so that the water level in the concentration tank 1 is constant, the supply of raw water 3 in the concentration tank 1 and the amount of filtered water and concentrated water taken out are controlled. are balanced. A flow meter in the filtered water outlet pipe 9 is not particularly required.
【００２３】[0023]
【発明の効果】以上述べたように本発明によると、濃度
一定の原水の流量を検出したうえで濾過水と濃縮水との
流量が一定の比となるように制御し、あるいは原水の流
量と濃度とを検出したうえで濃縮水の濃度が一定になる
ように濾過水や濃縮水の流量を制御するものであるため
、一定濃度の濃縮液を取り出すことが可能となって、そ
の後の設備における処理が容易なものとなる。As described above, according to the present invention, the flow rate of raw water with a constant concentration is detected and the flow rate of filtered water and concentrated water is controlled to be a constant ratio, or the flow rate of raw water is After detecting the concentration, the flow rate of filtered water or concentrated water is controlled so that the concentration of concentrated water is constant, so it is possible to take out concentrated liquid with a constant concentration, and it can be used later in the equipment. This makes processing easier.
【図１】本発明の方法を実施するための原水濃縮装置の
概略構成を示す図である。FIG. 1 is a diagram showing a schematic configuration of a raw water concentrator for carrying out the method of the present invention.
【図２】本発明の方法を実施するための原水濃縮装置の
概略構成を示す図である。FIG. 2 is a diagram showing a schematic configuration of a raw water concentrator for carrying out the method of the present invention.
【図３】本発明の方法を実施するための原水濃縮装置の
概略構成を示す図である。FIG. 3 is a diagram showing a schematic configuration of a raw water concentrator for carrying out the method of the present invention.
１ 濃縮槽 ２ 原水槽 ３ 原水 ８ 外圧型濾過膜モジュール １４ 取り出し管 1 Concentrator tank 2 Raw water tank 3 Raw water 8 External pressure type filtration membrane module 14 Take-out tube
Claims (3)
で濃縮する装置の運転方法であって、濃縮槽内に外圧型
濾過膜モジュールを設置してこの外圧型濾過膜モジュー
ルにより生じた濾過水を濃縮槽外へ取り出すとともに、
濾過により濃縮された濃縮水を濃縮槽外へ取り出すに際
し、原水槽の汚泥濃度を一定として、原水槽から濃縮槽
への原水の流量を検出し、この原水の流量に応じた濾過
水の流量と濃縮水の流量とが一定の比となるようにして
、これら濾過水と濃縮水とを濃縮槽から取り出すことを
特徴とする原水濃縮装置の運転方法。Claim 1: A method of operating an apparatus for concentrating raw water supplied from a raw water tank in a concentrating tank, the method comprising installing an external pressure type filtration membrane module in the concentrating tank, and filtration produced by the external pressure type filtration membrane module. While removing the water from the concentration tank,
When taking the concentrated water concentrated by filtration out of the thickening tank, the flow rate of raw water from the raw water tank to the thickening tank is detected with the sludge concentration in the raw water tank kept constant, and the flow rate of the filtrate and the flow rate of the filtrate are determined according to the flow rate of this raw water. A method for operating a raw water concentrator, characterized in that filtered water and concentrated water are taken out of a concentration tank such that the flow rate of the concentrated water is at a constant ratio.
で濃縮する装置の運転方法であって、濃縮槽内に外圧型
濾過膜モジュールを設置してこの外圧型濾過膜モジュー
ルにより生じた濾過水を濃縮槽外へ取り出すとともに、
濾過により濃縮された濃縮水を濃縮槽外へ取り出すに際
し、原水槽から濃縮槽へ供給される原水の流量と濃度と
を検出し、この原水の流量と濃度とに応じて、濃縮水の
濃度が一定になるような流量の濾過水を濃縮槽外へ取り
出し、かつ濃縮槽の水位が一定になるように濃縮水を濃
縮槽外へ取り出すことを特徴とする原水濃縮装置の運転
方法。2. A method of operating an apparatus for concentrating raw water supplied from a raw water tank in a concentrating tank, the method comprising: installing an external pressure type filtration membrane module in the concentrating tank; While removing the water from the concentration tank,
When taking concentrated water concentrated by filtration out of the concentration tank, the flow rate and concentration of the raw water supplied from the raw water tank to the concentration tank are detected, and the concentration of the concentrated water is determined according to the flow rate and concentration of this raw water. A method for operating a raw water concentrator, characterized in that filtered water is taken out of the concentration tank at a constant flow rate, and concentrated water is taken out of the concentration tank so that the water level in the concentration tank is constant.
で濃縮する装置の運転方法であって、濃縮槽内に外圧型
濾過膜モジュールを設置してこの外圧型濾過膜モジュー
ルにより生じた濾過水を濃縮槽外へ取り出すとともに、
濾過により濃縮された濃縮水を濃縮槽外へ取り出すに際
し、原水槽から濃縮槽へ供給される原水の流量と濃度と
を検出し、この原水の流量と濃度とに応じて、所定の濃
度とするのに必要な流量の濃縮水を濃縮槽外へ取り出し
、かつ濃縮槽の水位が一定になるように濾過水を濃縮槽
外へ取り出すことを特徴とする原水濃縮装置の運転方法
。3. A method of operating an apparatus for concentrating raw water supplied from a raw water tank in a concentrating tank, the method comprising installing an external pressure type filtration membrane module in the concentrating tank, and filtration produced by the external pressure type filtration membrane module. While removing the water from the concentration tank,
When taking concentrated water concentrated by filtration out of the concentration tank, the flow rate and concentration of the raw water supplied from the raw water tank to the concentration tank are detected, and a predetermined concentration is set according to the flow rate and concentration of this raw water. 1. A method for operating a raw water concentrator, characterized in that concentrated water is taken out of the concentration tank at a required flow rate, and filtered water is taken out of the concentration tank so that the water level in the concentration tank is kept constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3084297A JPH04317791A (en) | 1991-04-17 | 1991-04-17 | Operating method of raw water concentrating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3084297A JPH04317791A (en) | 1991-04-17 | 1991-04-17 | Operating method of raw water concentrating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04317791A true JPH04317791A (en) | 1992-11-09 |
Family
ID=13826540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3084297A Pending JPH04317791A (en) | 1991-04-17 | 1991-04-17 | Operating method of raw water concentrating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04317791A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH105783A (en) * | 1996-06-27 | 1998-01-13 | Kubota Corp | Filtering method for sewage treatment |
| JP2003053155A (en) * | 2001-08-13 | 2003-02-25 | Asahi Kasei Corp | Membrane filtration method |
| CN1116918C (en) * | 1999-07-20 | 2003-08-06 | 中国科学院生态环境研究中心 | Constant-flow ultrafiltration method and equipment thereof |
| JP2011522700A (en) * | 2008-06-09 | 2011-08-04 | ヴェオリア・ウォーター・ソリューションズ・アンド・テクノロジーズ・サポート | Water treatment method and system using membrane filtering system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0368426A (en) * | 1989-08-08 | 1991-03-25 | Kubota Corp | Controlling method for concentrator |
-
1991
- 1991-04-17 JP JP3084297A patent/JPH04317791A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0368426A (en) * | 1989-08-08 | 1991-03-25 | Kubota Corp | Controlling method for concentrator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH105783A (en) * | 1996-06-27 | 1998-01-13 | Kubota Corp | Filtering method for sewage treatment |
| CN1116918C (en) * | 1999-07-20 | 2003-08-06 | 中国科学院生态环境研究中心 | Constant-flow ultrafiltration method and equipment thereof |
| JP2003053155A (en) * | 2001-08-13 | 2003-02-25 | Asahi Kasei Corp | Membrane filtration method |
| JP2011522700A (en) * | 2008-06-09 | 2011-08-04 | ヴェオリア・ウォーター・ソリューションズ・アンド・テクノロジーズ・サポート | Water treatment method and system using membrane filtering system |
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