JP2001269551A - Method of detecting breakage of permeable membrane module of water purification system - Google Patents
Method of detecting breakage of permeable membrane module of water purification systemInfo
- Publication number
- JP2001269551A JP2001269551A JP2000086362A JP2000086362A JP2001269551A JP 2001269551 A JP2001269551 A JP 2001269551A JP 2000086362 A JP2000086362 A JP 2000086362A JP 2000086362 A JP2000086362 A JP 2000086362A JP 2001269551 A JP2001269551 A JP 2001269551A
- Authority
- JP
- Japan
- Prior art keywords
- water chamber
- hollow fiber
- chamber
- water
- raw water
- 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 163
- 239000012528 membrane Substances 0.000 title claims abstract description 43
- 238000000746 purification Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000012510 hollow fiber Substances 0.000 claims abstract description 49
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
(57)【要約】
【課題】 本発明は、処理水室のみに水を残して中空糸
膜の破断を検出することにより、中空糸膜全体にわたり
検出可能とした破断検知方法を提供することを目的とす
る。
【解決手段】 本発明による浄水処理装置の透過膜モジ
ュールの破断検知方法は、処理水室(24)のみに処理水が
存在する状態下で、中空糸膜(2)の外部に加圧気体を吹
込み、処理水室(24)側に発生する気泡を検知して中空糸
膜(2)の破断を検知する方法である。
(57) [Problem] To provide a break detection method capable of detecting breakage of a hollow fiber membrane by leaving water only in a treated water chamber and detecting breakage of the hollow fiber membrane. Aim. SOLUTION: In the method for detecting breakage of a permeable membrane module of a water purification treatment device according to the present invention, a pressurized gas is supplied to the outside of a hollow fiber membrane (2) in a state where treated water is present only in a treated water chamber (24). This is a method for detecting breakage of the hollow fiber membrane (2) by detecting air bubbles generated on the side of the blowing and treated water chamber (24).
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、浄水処理装置の透
過膜モジュールの破断検知方法に関し、特に、処理水室
以外の室を空状態として中空糸条膜の外部から加圧気体
を供給し、処理室に発生する気泡の有無を検知すること
により、中空糸膜の全長にわたる破断の有無を確実に検
知することができるようにするための新規な改良に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting breakage of a permeable membrane module of a water purification treatment apparatus, and more particularly, to a method in which a chamber other than a treated water chamber is emptied and a pressurized gas is supplied from outside a hollow fiber membrane. The present invention relates to a novel improvement for reliably detecting the presence or absence of breakage over the entire length of a hollow fiber membrane by detecting the presence or absence of bubbles generated in a processing chamber.
【０００２】[0002]
【従来の技術】従来、用いられていたこの種の浄水処理
装置の透過膜モジュールの破断検知方法としては、例え
ば、図２に示される特開平９−７５６９０号公報に開示
された構成を挙げることができる。すなわち、図２にお
いて、中空糸フィルタモジュール１は、そま内部が上部
シール３ａと下部シール３ｂによって上部浄水室１ａ、
下部浄水室１ｂ及び原水室１ｃに区分けされている。上
部シール３ａと下部シール３ｂには、中空糸（フィル
タ）２がそれぞれ挟持され、中空糸２の上端は上部浄水
室１ａに貫通し、その下端は下部浄水室１ｂに貫通して
いる。上部浄水室１ａ及び下部浄水室１ｂは中空糸２に
よって原水室１ｃと連通している。また、中空糸２は、
微細な孔が形成された多孔質材であるポリプロピレン製
等の樹脂をストロー状に加工したものが用いられ、実施
例では孔の直径が０．２μｍのみのを使用したが用途に
よってこの直径及び材質が異なる。2. Description of the Related Art Conventionally, as a method of detecting breakage of a permeable membrane module of a water purification apparatus of this type, a configuration disclosed in Japanese Patent Application Laid-Open No. 9-75690 shown in FIG. 2 is exemplified. Can be. That is, in FIG. 2, the hollow fiber filter module 1 has an upper water purification chamber 1a, an inner space of which is formed by an upper seal 3a and a lower seal 3b.
It is divided into a lower water purification chamber 1b and a raw water chamber 1c. A hollow fiber (filter) 2 is sandwiched between the upper seal 3a and the lower seal 3b. The upper end of the hollow fiber 2 penetrates the upper water purification chamber 1a, and the lower end penetrates the lower water purification chamber 1b. The upper water purification chamber 1a and the lower water purification chamber 1b communicate with the raw water chamber 1c by the hollow fiber 2. Moreover, the hollow fiber 2
A resin made of a resin such as polypropylene, which is a porous material having fine pores formed therein, is used in the form of a straw. In the examples, only 0.2 μm diameter pores were used. Are different.
【０００３】中空糸フィルタモジュール１の上部浄水室
１ａと下部浄水室１ｂには浄水用流路４が設けられ、上
下の浄水用流路４が配管１２によって連通している。ま
た、中空糸フィルタモジュール１の原水室１ｃには上部
原水用流路６と下部原水用流路７が設けられ、上部原水
用流路６の原水配管８にはバルブ９が設けられ、下部原
水用流路７の原水配管１０は上部原水用流路６の位置よ
り高い位置まで屈曲させて配管されている。片側の上部
原水用流路６と下部原水用流路７はキャップ１１で封止
され、未使用の浄水用流路４，５も同様にキャップ１３
で封止されている。[0003] The upper water purification chamber 1a and the lower water purification chamber 1b of the hollow fiber filter module 1 are provided with a water purification flow path 4, and the upper and lower water purification flow paths 4 communicate with each other through a pipe 12. The raw water chamber 1c of the hollow fiber filter module 1 is provided with an upper raw water flow path 6 and a lower raw water flow path 7, and a raw water pipe 8 of the upper raw water flow path 6 is provided with a valve 9; The raw water pipe 10 of the flow path 7 for use is bent and piped to a position higher than the position of the flow path 6 for upper raw water. The upper raw water flow path 6 and the lower raw water flow path 7 on one side are sealed with a cap 11, and the unused water purification flow paths 4 and 5 are similarly covered with a cap 13.
It is sealed with.
【０００４】また、水処理フィルタ損傷検出装置は、上
記水処理装置に加圧装置Ｐと、超音波発振子と超音波を
受信する受信器からなる超音波センサ１６を有するもの
であり、加圧装置Ｐは浄水配管１２に設けられ、超音波
センサ１６は中空糸フィルタモジュール１の側壁に設け
られている。この水処理装置の濾過方法は、原水配管８
から流入した原水が原水室１ｃに注ぎ込まれる。上部及
び下部シール３ａ，３ｂで区画された原水室１ｃの中空
糸２によって、原水１４は濾過されて浄水配管１２から
水が取り出される。[0004] The water treatment filter damage detecting device has a pressurizing device P and an ultrasonic sensor 16 comprising an ultrasonic oscillator and a receiver for receiving ultrasonic waves. The device P is provided on the water purification pipe 12, and the ultrasonic sensor 16 is provided on the side wall of the hollow fiber filter module 1. The filtration method of this water treatment apparatus is based on the raw water piping 8
Is poured into the raw water chamber 1c. The raw water 14 is filtered by the hollow fiber 2 in the raw water chamber 1c partitioned by the upper and lower seals 3a, 3b, and water is taken out from the purified water pipe 12.
【０００５】次に、動作について説明する。中空糸２に
よるフィルタの破断や劣化を検出する損傷検出は、先
ず、原水の流入を停止し、原水１４は原水配管１０が屈
曲しているのでフィルタモジュール１内に残存した状態
とする。この状態で原水１４及び加圧空気が流出しない
ようにバルブ９が閉じられる。また、加圧空気が他に漏
れないように浄水配管１２にもバルブが設けられる（図
示なし）。その後、配管１２側に設けられた加圧装置Ｐ
によって加圧空気を流入すると、原水室１ｃ内の中空糸
２及び浄水側の浄水室１ａ，１ｂが加圧空気で満たされ
る。Next, the operation will be described. In the damage detection for detecting breakage or deterioration of the filter due to the hollow fiber 2, first, the flow of the raw water is stopped, and the raw water 14 remains in the filter module 1 because the raw water pipe 10 is bent. In this state, the valve 9 is closed so that the raw water 14 and the pressurized air do not flow out. Also, a valve is provided in the water purification pipe 12 so that the pressurized air does not leak to other parts (not shown). Then, the pressurizing device P provided on the pipe 12 side
When the pressurized air flows in, the hollow fibers 2 in the raw water chamber 1c and the water purification chambers 1a and 1b on the water purification side are filled with the compressed air.
【０００６】加圧空気の圧力は何ら損傷の無い中空糸２
に基づいて設定されるが、５０〜２００Ｋパスカルの範
囲で加圧される。実施例では１００Ｋパスカルが印加さ
れたが、その圧力は容器や配管等の対象物や中空糸（フ
ィルタ）２の材質によっても異なる。フィルタを加圧す
ることによりその部分に損傷部が存在する場合には、加
圧空気がフィルタの損傷部から漏洩して気泡が発生す
る。中空糸フィルタモジュール１の側壁に設けられた超
音波センサ１６の超音波振動子から発振された超音波
は、原水１４に気泡が存在すると、フィルタ内部への超
音波の透過率が低下するために、フィルタ外壁内側から
の超音波反射波の強度変化によって中空糸２の損傷の有
無を診断することができる。[0006] The pressure of the pressurized air is the same as the hollow fiber 2 without any damage.
, But is pressurized in the range of 50 to 200K Pascal. In the embodiment, 100 K pascal is applied, but the pressure varies depending on the object such as a container or a pipe and the material of the hollow fiber (filter) 2. When the filter is pressurized and a damaged portion is present at that portion, pressurized air leaks from the damaged portion of the filter to generate air bubbles. The ultrasonic wave oscillated from the ultrasonic oscillator of the ultrasonic sensor 16 provided on the side wall of the hollow fiber filter module 1 is reduced in the presence of air bubbles in the raw water 14 because the transmittance of the ultrasonic wave into the filter decreases. The presence or absence of damage to the hollow fiber 2 can be diagnosed by a change in the intensity of the ultrasonic reflected wave from the inside of the outer wall of the filter.
【０００７】一方、加圧によって漏れた気泡は上昇して
フィルタ上部に空気層１５を生成する。この空気層を中
空糸フィルタモジュール１の外壁から超音波センサ１６
で検出することによって損傷の有無が診断できる。すな
わち、超音波は処理水が満たされた状態と空気層１５と
では超音波の透過率が異なるので、超音波の反射強度を
検出することによって空気層１５の存在を検出すること
ができる。すなわち、上部に溜まった空気層によって損
傷の度合いを検出することができる。また、この空気層
１５は原水配管１０の一部を透明な材質とすることによ
って、その水位を目視によって損傷の度合いを確認する
ことができる。On the other hand, air bubbles leaked by pressurization rise to form an air layer 15 above the filter. This air layer is separated from the outer wall of the hollow fiber filter module 1 by the ultrasonic sensor 16.
The presence or absence of damage can be diagnosed by detecting the above. That is, since the ultrasonic waves have different transmittances between the state where the treated water is filled and the air layer 15, the presence of the air layer 15 can be detected by detecting the reflection intensity of the ultrasonic waves. That is, the degree of damage can be detected by the air layer accumulated in the upper part. In addition, by making a part of the raw water pipe 10 of the air layer 15 a transparent material, the level of the damage can be confirmed by visual observation of the water level.
【０００８】[0008]
【発明が解決しようとする課題】従来の浄水処理装置の
透過膜モジュールの破断検知方法は、以上のように構成
されていたため、次のような課題が存在していた。すな
わち、浄水室側から圧縮空気を入れるため、空気は浄水
室から中空糸を経て原水室へと流れ込み、中空糸膜の破
断検出には、原水室内部の中空糸膜が対象であると共
に、原水室内の空気層１５の部分の中空糸が水中に位置
していないため、この部分の漏れチェックは不可能であ
った。また、原水室内を全部空気層とするには、中空糸
膜の細孔を通すために時間を要し、この時、図２の形態
におけるセンサ位置では漏れ状態のチェックは不可能で
あった。The conventional method for detecting breakage of a permeable membrane module in a water purification treatment apparatus has the following problems because it has been configured as described above. That is, since compressed air is introduced from the water purification chamber side, air flows from the water purification chamber through the hollow fiber into the raw water chamber, and the detection of the breakage of the hollow fiber membrane is performed on the hollow fiber membrane inside the raw water chamber. Since the hollow fibers in the portion of the air layer 15 in the room were not located in the water, it was impossible to check for leaks in this portion. Further, it takes time to pass through the pores of the hollow fiber membrane to make the whole raw water chamber an air layer. At this time, it was impossible to check for a leak at the sensor position in the embodiment of FIG.
【０００９】本発明は、以上のような課題を解決するた
めになされたもので、特に、処理水室以外の室を空状態
として中空糸条膜の外部から加圧気体を供給し、処理室
に発生する気泡の有無を検知することにより、中空糸膜
の全長にわたる破断の有無を確実に検知することができ
る浄水処理装置の透過膜モジュール破断検知方法を提供
することを目的とする。The present invention has been made to solve the above-mentioned problems, and in particular, a chamber other than the treated water chamber is emptied to supply a pressurized gas from outside the hollow fiber membrane to the treatment chamber. It is an object of the present invention to provide a method for detecting breakage of a permeable membrane module of a water purification treatment device, which can reliably detect the presence or absence of breakage over the entire length of a hollow fiber membrane by detecting the presence or absence of bubbles generated in the water.
【００１０】[0010]
【課題を解決するための手段】本発明による浄水処理装
置の透過膜モジュールの破断検知方法は、ケーシング内
を原水室、前記原水室と連通する循環水室及び処理水室
とに区分し、前記処理水室と循環水室とを連通するため
の多数の中空糸膜を有し、前記循環水室から中空糸膜及
び処理水室を経て処理水が外部に送出される浄水処理装
置において、前記原水室及び循環水室を空状態とし、処
理水室にのみ処理水が存在する状態下で、前記中空糸膜
の外部に加圧気体を吹込み、前記処理水室側に発生する
気泡を検知して前記中空糸膜の破断を検知する方法であ
り、また、前記気泡の検知は、前記処理水室の処理水管
に設けた超音波流速計で行うと共に、前記原水室に加圧
気体を供給する方法である。According to the method for detecting breakage of a permeable membrane module of a water purification apparatus according to the present invention, the casing is divided into a raw water chamber, a circulating water chamber communicating with the raw water chamber, and a treated water chamber. In the water purification treatment apparatus, which has a number of hollow fiber membranes for communicating the treated water chamber and the circulating water chamber, and wherein treated water is sent from the circulating water chamber to the outside via the hollow fiber membrane and the treated water chamber, The raw water chamber and the circulating water chamber are emptied, and in a state where the treated water is present only in the treated water chamber, a pressurized gas is blown out of the hollow fiber membrane to detect bubbles generated in the treated water chamber. And detecting the breakage of the hollow fiber membrane, and detecting the air bubbles with an ultrasonic flowmeter provided in a treatment water pipe of the treatment water chamber and supplying a pressurized gas to the raw water chamber. How to
【００１１】[0011]
【発明の実施の形態】以下、図面と共に本発明による浄
水処理装置の透過膜モジュールの破断検知方法の好適な
実施の形態について説明する。なお、従来例と同一又は
同等部分には同一符号を付して説明する。図１において
符号１で示されるものは下部側から上部側へ向けて配設
された原水室２０、第１隔壁２１、多数の中空糸膜２を
有する循環水室２２、第２隔壁２３及び処理水室２４を
有するケーシングであり、前記原水室室２０には原水入
口ノズル３０及び空気弁３１を有するコンプレッサ３２
が設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a method for detecting breakage of a permeable membrane module of a water purification apparatus according to the present invention will be described below with reference to the drawings. The same or equivalent parts as those in the conventional example will be described with the same reference numerals. In FIG. 1, a reference numeral 1 designates a raw water chamber 20, a first partition 21, a circulating water chamber 22 having a large number of hollow fiber membranes 2, a second partition 23, and a treatment provided from the lower side to the upper side. The raw water chamber 20 includes a raw water inlet nozzle 30 and a compressor 32 having an air valve 31.
Is provided.
【００１２】前記循環水室２２内に設けられた前記各中
空糸膜２は、前記第１隔壁２１及び第２隔壁２３間に支
持されており、前記第１隔壁２１に形成された貫通孔３
３により前記循環水室２２と原水室２０とが連通してい
る。前記各中空糸膜２の上端２ａは、前記第２隔壁２３
を貫通して前記処理水室２４に突出して開口しており、
その下端２ｂは前記第１隔壁２１によって端栓状に閉状
態とされている。Each of the hollow fiber membranes 2 provided in the circulating water chamber 22 is supported between the first partition 21 and the second partition 23, and has a through hole 3 formed in the first partition 21.
3, the circulating water chamber 22 and the raw water chamber 20 communicate with each other. The upper end 2a of each of the hollow fiber membranes 2 is
And projectingly open to the treated water chamber 24,
The lower end 2b is closed in an end plug shape by the first partition 21.
【００１３】前記循環水室２２の上部位置に設けられた
循環ノズル３４には、ベント弁３５及び循環水弁３６を
有する循環水管３７が設けられており、この循環水管３
７からの循環水３７ａは、原水４０が供給される原水槽
４１に供給され、この原水槽４１内の原水４０は原水ポ
ンプ４１及び原水弁４２を経て前記原水入口ノズル３０
に接続されていると共に、この原水入口ノズル３０には
排水弁４３が接続されている。A circulating nozzle 34 provided above the circulating water chamber 22 is provided with a circulating water pipe 37 having a vent valve 35 and a circulating water valve 36.
7 is supplied to a raw water tank 41 to which the raw water 40 is supplied, and the raw water 40 in the raw water tank 41 is passed through a raw water pump 41 and a raw water valve 42 to the raw water inlet nozzle 30.
The raw water inlet nozzle 30 is connected to a drain valve 43.
【００１４】前記処理水室２４に設けられた処理水ノズ
ル５０は、周知の超音波流速計１６を有する処理水管５
１に接続され、この処理水管５１の処理済みの処理水５
１ａは処理水槽５２に供給されるように構成されてい
る。A treated water nozzle 50 provided in the treated water chamber 24 is provided with a treated water pipe 5 having a well-known ultrasonic flow meter 16.
1 and the treated water 5
1 a is configured to be supplied to the treatment water tank 52.
【００１５】次に、動作について説明する。まず、原水
弁４２を開、排水弁４３を閉、空気弁３１を閉、ベント
弁３５を閉、循環水弁３６を開とすると、原水槽４１か
らの原水４０は、原水ポンプ４１及び原水弁４２を経て
原水入口ノズル３０から原水室２０に入り、中空糸膜２
の外側から内部及び上端２ａを経て処理水室２４から処
理水槽５２に供給される。また、この循環水室２２内の
循環水３７ａは、循環水管３７を経て原水槽４１に供給
されている。Next, the operation will be described. First, when the raw water valve 42 is opened, the drain valve 43 is closed, the air valve 31 is closed, the vent valve 35 is closed, and the circulating water valve 36 is opened, the raw water 40 from the raw water tank 41 is supplied to the raw water pump 41 and the raw water valve 41. 42, the raw water enters the raw water chamber 20 from the raw water inlet nozzle 30, and the hollow fiber membrane 2
Is supplied from the outside to the treated water tank 52 from the treated water chamber 24 via the inside and the upper end 2a. The circulating water 37 a in the circulating water chamber 22 is supplied to the raw water tank 41 via the circulating water pipe 37.
【００１６】次に、前述の処理水の処理動作中におい
て、中空糸膜２の破断検知を行う場合、原水弁４２を
閉、排水弁４３を開、空気弁３１を閉、ベント弁３５を
開、循環水弁３６を閉、原水ポンプ４１を停止、コンプ
レッサ３２を停止し、循環水室２２内及び原水室２０内
の水を排水し、処理水室２４内の水のみを残し充満した
状態とする。Next, when the breakage of the hollow fiber membrane 2 is detected during the above-mentioned treated water treatment operation, the raw water valve 42 is closed, the drain valve 43 is opened, the air valve 31 is closed, and the vent valve 35 is opened. The circulating water valve 36 is closed, the raw water pump 41 is stopped, the compressor 32 is stopped, the water in the circulating water chamber 22 and the raw water chamber 20 is drained, and only the water in the treated water chamber 24 is left and filled. I do.
【００１７】前述の状態で、原水弁を閉、排水弁４３を
閉、空気弁３１を開、ベント弁３５を閉、循環水弁３６
を閉、原水ポンプ４１を停止、コンプレッサ３２を運転
とすることにより、加圧気体が中空糸膜２に加わり、も
し、破断があれば、中空糸膜２の外側から供給された空
気が中空糸膜２を介して処理水室２４内に気泡として発
生し、この気泡が超音波流速計１６を通過するため、こ
の気泡の通過の有無により破断の有無を測定値の変動幅
で検出することができる。In the above state, the raw water valve is closed, the drain valve 43 is closed, the air valve 31 is opened, the vent valve 35 is closed, and the circulating water valve 36 is closed.
Is closed, the raw water pump 41 is stopped, and the compressor 32 is operated, so that pressurized gas is added to the hollow fiber membrane 2. If there is a break, air supplied from the outside of the hollow fiber membrane 2 is removed from the hollow fiber membrane 2. Since bubbles are generated in the treated water chamber 24 via the membrane 2 and pass through the ultrasonic current meter 16, the presence or absence of breakage can be detected based on the presence or absence of passage of the bubbles based on the variation width of the measured value. it can.
【００１８】前記超音波流速計１６における変動値は、
０．０３ｍ／ｓが５秒間以上継続した場合を破断と判定
している。なお、この超音波流速計１６は、フェロー工
業（株）製のＦＣＳ−２１０型を採用した。The fluctuation value in the ultrasonic anemometer 16 is as follows:
When 0.03 m / s continued for 5 seconds or more, it was determined to be a break. The ultrasonic flow meter 16 used was FCS-210 manufactured by Fellow Industry Co., Ltd.
【００１９】[0019]
【発明の効果】本発明による浄水処理装置の透過膜モジ
ュールの破断検知方法は、以上のように構成されている
ため、次のような効果を得ることができる。すなわち、
処理水室のみに水を残した状態で、中空糸膜２全体の外
側から空気を送って処理水室２４内への気泡の有無につ
いて測定し、中空糸膜の破断状態を検出しているため、
中空糸膜全体について破断の有無を検出することがで
き、この種の装置の信頼性の向上を得ることができる。
また、外部から簡単に破断検知が可能であり、メンテナ
ンスが容易である。また、検出の感度は可変であり、誤
動作も少ない。The method for detecting breakage of a permeable membrane module of a water purification apparatus according to the present invention is configured as described above, so that the following effects can be obtained. That is,
Since air is sent from the outside of the entire hollow fiber membrane 2 while leaving water only in the treated water chamber to measure the presence or absence of air bubbles in the treated water chamber 24, and the broken state of the hollow fiber membrane is detected. ,
The presence or absence of breakage can be detected for the entire hollow fiber membrane, and the reliability of this type of device can be improved.
In addition, breakage can be easily detected from the outside, and maintenance is easy. Further, the sensitivity of detection is variable, and there is little malfunction.
【図１】本発明による浄水処理装置の透過膜モジュール
の破断検知方法を示す構成図である。FIG. 1 is a configuration diagram showing a method for detecting breakage of a permeable membrane module of a water purification apparatus according to the present invention.
【図２】従来構成の構成図である。FIG. 2 is a configuration diagram of a conventional configuration.
１ ケーシング ２ 中空糸膜 １６ 超音波流速計 ２０ 原水室 ２２ 循環水室 ２４ 処理水室 ５１ 処理水管 Reference Signs List 1 casing 2 hollow fiber membrane 16 ultrasonic flow meter 20 raw water chamber 22 circulating water chamber 24 treated water chamber 51 treated water pipe
Claims (2)
水室(20)と連通する循環水室(22)及び処理水室(24)とに
区分し、前記処理水室(24)と循環水室(22)とを連通する
ための多数の中空糸膜(2)を有し、前記循環水室(22)か
ら中空糸膜(2)及び処理水室(24)を経て処理水が外部に
送出される浄水処理装置において、前記原水室(20)及び
循環水室(22)を空状態とし、処理水室(24)にのみ処理水
が存在する状態下で、前記中空糸膜(2)の外部に加圧気
体を吹込み、前記処理水室(24)側に発生する気泡を検知
して前記中空糸膜(2)の破断を検知することを特徴とす
る浄水処理装置の透過膜モジュールの破断検知方法。The casing (1) is divided into a raw water chamber (20), a circulating water chamber (22) communicating with the raw water chamber (20), and a treated water chamber (24). ) And a circulating water chamber (22), and a large number of hollow fiber membranes (2) for communicating with the circulating water chamber (22) .The circulating water chamber (22) is processed through the hollow fiber membrane (2) and the treated water chamber (24). In the water purification apparatus in which water is sent to the outside, the raw water chamber (20) and the circulating water chamber (22) are emptied, and the hollow fiber is placed in a state where the treated water exists only in the treated water chamber (24). A water purification apparatus characterized in that a pressurized gas is blown into the outside of the membrane (2) to detect a bubble generated in the treated water chamber (24) and to detect a breakage of the hollow fiber membrane (2). Method for detecting breakage of permeable membrane module.
処理水管(51)に設けた超音波流速計(16)で行うと共に、
前記原水室(20)に加圧気体を供給することを特徴とする
請求項１記載の浄水処理装置の透過膜モジュールの破断
検知方法。The detection of the air bubbles is performed by an ultrasonic current meter (16) provided in a treatment water pipe (51) of the treatment water chamber (24),
The method according to claim 1, wherein a pressurized gas is supplied to the raw water chamber (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000086362A JP2001269551A (en) | 2000-03-27 | 2000-03-27 | Method of detecting breakage of permeable membrane module of water purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000086362A JP2001269551A (en) | 2000-03-27 | 2000-03-27 | Method of detecting breakage of permeable membrane module of water purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001269551A true JP2001269551A (en) | 2001-10-02 |
Family
ID=18602543
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000086362A Pending JP2001269551A (en) | 2000-03-27 | 2000-03-27 | Method of detecting breakage of permeable membrane module of water purification system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001269551A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005349253A (en) * | 2004-06-08 | 2005-12-22 | Kurita Water Ind Ltd | Membrane treatment apparatus and membrane breakage detection method |
| JP2006082054A (en) * | 2004-09-17 | 2006-03-30 | Kurita Water Ind Ltd | Film break detection method |
| US7087173B2 (en) | 1995-08-11 | 2006-08-08 | Zenon Environmental Inc. | Inverted cavity aerator for membrane module |
| WO2007094188A1 (en) * | 2006-02-16 | 2007-08-23 | Nikkiso Company Limited | Blood purification apparatus and method of examining leakage therein |
| JP2007240373A (en) * | 2006-03-09 | 2007-09-20 | Toshiba It & Control Systems Corp | Membrane damage detection device and membrane damage detection method for filtration system for water treatment |
| FR2909904A1 (en) * | 2006-12-19 | 2008-06-20 | Degremont Sa | Hollow fiber type filtration membrane`s e.g. ultra filtration membrane, integrity control method for water filtration assembly, involves placing sensor in water, where sensor detects gas passage in water compartment during integrity defect |
| US7534353B2 (en) | 1995-08-11 | 2009-05-19 | Zenon Technology Partnership | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes |
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| US7087173B2 (en) | 1995-08-11 | 2006-08-08 | Zenon Environmental Inc. | Inverted cavity aerator for membrane module |
| US8852438B2 (en) | 1995-08-11 | 2014-10-07 | Zenon Technology Partnership | Membrane filtration module with adjustable header spacing |
| US7534353B2 (en) | 1995-08-11 | 2009-05-19 | Zenon Technology Partnership | Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes |
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| JP4591670B2 (en) * | 2004-09-17 | 2010-12-01 | 栗田工業株式会社 | Film break detection method |
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| FR2909904A1 (en) * | 2006-12-19 | 2008-06-20 | Degremont Sa | Hollow fiber type filtration membrane`s e.g. ultra filtration membrane, integrity control method for water filtration assembly, involves placing sensor in water, where sensor detects gas passage in water compartment during integrity defect |
| KR20180071081A (en) | 2016-12-19 | 2018-06-27 | 예일 유니버시티 | Manufacturing method for self-healing hydrogel pore-filled water filtration membrane |
| US10618012B2 (en) | 2016-12-19 | 2020-04-14 | Yale University | Method for manufacturing self-healing hydrogel-filled separation membrane for water treatment |
| WO2020121881A1 (en) | 2018-12-12 | 2020-06-18 | 株式会社クボタ | Membrane defect inspection method and membrane defect inspection device |
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