JPS63274405A - Reverse washing treatment method of hollow fiber membrane filter apparatus - Google Patents
Reverse washing treatment method of hollow fiber membrane filter apparatusInfo
- Publication number
- JPS63274405A JPS63274405A JP62107751A JP10775187A JPS63274405A JP S63274405 A JPS63274405 A JP S63274405A JP 62107751 A JP62107751 A JP 62107751A JP 10775187 A JP10775187 A JP 10775187A JP S63274405 A JPS63274405 A JP S63274405A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- hollow fiber
- fiber membrane
- backwash water
- 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
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 43
- 239000012528 membrane Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 19
- 230000002441 reversible effect Effects 0.000 title description 2
- 238000005406 washing Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000001914 filtration Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 238000005374 membrane filtration Methods 0.000 claims description 14
- 238000011001 backwashing Methods 0.000 abstract description 7
- 239000000725 suspension Substances 0.000 abstract description 4
- 239000002901 radioactive waste Substances 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 206010003445 Ascites Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000002351 wastewater Substances 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は、原子力発電プラントがら発生ずる廃液や原子
炉で発生した蒸気の復水をと過処理する中空糸膜濾過装
置の逆洗水処理方法に関する。[Detailed Description of the Invention] [Purpose of the Invention (Industrial Application Field) The present invention provides a hollow fiber membrane filtration device for filtering waste liquid generated from nuclear power plants and condensate of steam generated in nuclear reactors. This invention relates to a backwash water treatment method.
（従来の技術）
一般に、原子力発電プラントにおいては、放射線低減対
策として腐蝕生成物の発生の抑制およびその除去を行っ
ている。例えば、原子力発電プラントで発生する放射性
廃液あるいは一次冷却系の復水中に穿在する懸濁物の分
離除去手段として濾過装置が使用されている。このよう
な濾過装置として、従来粉末イオン交換樹脂のようなプ
リコートフィルタを使用するもの、Ｐ紙、沢布、メンブ
レンフィルタ等の平膜型濾過フィルタを使用するもの等
があった。(Prior Art) Generally, in nuclear power plants, generation of corrosion products is suppressed and removed as radiation reduction measures. For example, a filtration device is used as a means for separating and removing suspended matter in radioactive waste liquid generated in a nuclear power plant or in condensate water of a primary cooling system. Conventionally, such filtration devices include those that use a precoated filter such as a powdered ion exchange resin, and those that use a flat membrane type filtration filter such as P paper, sawcloth, or membrane filter.
しかしながら、粉末イオン交換樹脂を使用しな濾過装置
では樹脂廃棄物が多量に発生するという問題があり、平
膜型フィルタを使用したものでは大流星の循環流量が必
要なため構成が複雑となりそれに伴って設備費が上昇の
原因となること、二次廃ｉ物が発生ずること、濾過効率
が低いこと等の問題があった。However, filtration devices that do not use powdered ion exchange resin have the problem of generating large amounts of resin waste, and those that use flat membrane filters require a large meteoric circulation flow rate, resulting in a complicated configuration. There have been problems such as increased equipment costs, generation of secondary waste, and low filtration efficiency.
そこで近年、このような問題を解消するべく、中空糸膜
モジュールを使用した中空糸膜濾過装置が開発されてい
る。この濾過装置に使用される中空糸膜は外径が０．３
〜３１１１程度で、周壁に微細な透過孔を有する中空状
の繊維の膜であり、単位容積内の断面積を大きくとるこ
とができ、また耐圧性に優れていることから限外濾過用
、逆浸透用のＰ過材として電子工業、医学、排気処理等
の分野で広く使用されている。In recent years, hollow fiber membrane filtration devices using hollow fiber membrane modules have been developed to solve these problems. The hollow fiber membrane used in this filtration device has an outer diameter of 0.3
~3111, it is a hollow fiber membrane with fine permeation holes in the peripheral wall, and it can have a large cross-sectional area within a unit volume, and has excellent pressure resistance, so it is suitable for ultrafiltration and reverse filtration. It is widely used as a P filter material for penetration in fields such as the electronic industry, medicine, and exhaust treatment.
このような中空糸膜を使用した濾過装置では、長期間の
使用により、炉液中に含まれる例えば不溶解性固形分等
の懸濁物が中空糸膜に付着・蓄積し、この付着した懸濁
物により濾過装置の上流・下流側の差圧が所定の規定値
よりも上昇してしまう、この場合には、？過処理作業を
停止して逆洗操作を行い、中空糸５嗅フイルタに付着し
た懸濁物を洗い落すことが必要となる。In filtration devices using such hollow fiber membranes, after long-term use, suspended matter such as insoluble solids contained in the furnace fluid adheres to and accumulates on the hollow fiber membranes, and this attached suspension is removed. In this case, the differential pressure between the upstream and downstream sides of the filtration device rises above a predetermined value due to turbidity. It is necessary to stop the overtreatment operation and perform a backwash operation to wash off the suspended matter adhering to the hollow fiber 5 olfactory filter.
このような従来の中空糸膜濾過装置の逆洗水の処理方法
を第２図に示す。FIG. 2 shows a method for treating backwash water in such a conventional hollow fiber membrane filtration device.
Ｐ液、例えば復水器からの腹水等は、濾過液ライン１に
よつ中空糸、Ｗ濾過装置２に導かれる。この中空糸Ｗｉ
濾過装ｒ！ｔ２の内部は、濾過室２ａと処理液室２ｂに
仕切られており、処理液室２ｂ内には多数の中空糸膜フ
ィルタ３が内装されている。P liquid, for example, ascites from a condenser, is guided to a hollow fiber W filtration device 2 through a filtrate line 1 . This hollow fiber Wi
Filtration equipment! The inside of t2 is partitioned into a filtration chamber 2a and a processing liquid chamber 2b, and a large number of hollow fiber membrane filters 3 are installed inside the processing liquid chamber 2b.
濾過室２ｂ内に導入されたＰ液は、該中空糸膜フィルタ
３で濾過されて、処理液室２ｂに流入した後、処理液ラ
イン４がら流出する。The P liquid introduced into the filtration chamber 2b is filtered by the hollow fiber membrane filter 3, flows into the processing liquid chamber 2b, and then flows out through the processing liquid line 4.
ところで、このような中空糸膜Ｆ’ｙ！Ｊ装置では、長
期間の使用によりＰ液中の懸濁物が中空糸膜フィルタ３
に付着して中空糸、嗅フィルタの上流・下流側の差圧が
上昇し、これが所定の規定値に達した場合、枦適作業を
一旦停止して逆洗作業を行うことが必要である。By the way, such a hollow fiber membrane F'y! In the J device, suspended matter in the P liquid is removed from the hollow fiber membrane filter 3 due to long-term use.
If the differential pressure between the upstream and downstream sides of the hollow fiber and olfactory filter increases, and this reaches a predetermined value, it is necessary to temporarily stop the cleaning process and perform backwashing.
この逆洗作業は、処理液室２ｂに高圧の圧縮空気（例え
ば、３．０〜７．０ ｋｇ／ ａｄ ）を導入して処理
液室２ｂ内の処理水を濾過室２ａに逆流させ、中空糸膜
フィルタ３に付着した懸濁物を濾過室２ａ内に落す、こ
の懸濁物を混入したＰ液を逆洗水と呼ぶ。This backwashing work involves introducing high-pressure compressed air (e.g., 3.0 to 7.0 kg/ad) into the processing liquid chamber 2b to cause the treated water in the processing liquid chamber 2b to flow back into the filtration chamber 2a. The suspended matter adhering to the thread membrane filter 3 is dropped into the filtration chamber 2a, and the P liquid mixed with this suspended matter is called backwash water.
こうして得た逆洗水は、ｒ過室２ａ下部に配管されな逆
洗水排出ライン５を通して排出される。The backwash water thus obtained is discharged through a backwash water discharge line 5 that is not piped to the lower part of the r-passage chamber 2a.
排出された逆洗水は逆洗水受槽６に貯溜され、ここで数
日間静置して逆洗水中に含まれる！ｇ湧物を沈降分離さ
せ、沈降物は沈降物排出ラインにより固化装置へ送られ
、一方上ずみ液は上ずみ液排出ラインにより例えば別の
濾過装置かまたは再度上記中空糸膜濾過装置２に送られ
て処理された後、再使用水槽へ送られてプラント内の補
給水として再使用される。The discharged backwash water is stored in the backwash water receiving tank 6, where it remains for several days and is included in the backwash water! g. The spring material is separated by sedimentation, and the sediment is sent to the solidification device through a sediment discharge line, while the supernatant liquid is sent to, for example, another filtration device or again to the hollow fiber membrane filtration device 2 by the supernatant liquid discharge line. After being treated, the water is sent to a reuse tank and reused as makeup water within the plant.
（発明が解決しようとする問題点）
ところが上述した従来の中空糸膜濾過装置の逆洗水処理
方法は、原子力発電プラントで発生する一次系の復水や
１次系の機器より発生する放射性廃液に含まれる高い放
射能を有する懸濁物を濾過処理するため、逆洗にて発生
する逆洗水は濃縮化されて、非常に高い放射能となるた
め、これを処理する下流側の逆洗水受槽６、濾過装置、
減容固化装置等が高い放射能で汚染されてしまうという
問題があった。(Problems to be Solved by the Invention) However, the above-mentioned conventional backwash water treatment method for hollow fiber membrane filtration equipment is not suitable for treating primary system condensate generated in nuclear power plants or radioactive waste liquid generated from primary system equipment. In order to filter suspended matter with high radioactivity contained in Water tank 6, filtration device,
There was a problem that the volume reduction and solidification equipment etc. were contaminated with high radioactivity.
さらに逆洗水は多量の懸濁物を含む高濃度廃液であるた
め、例えば５００ ｍ ” ／ ｈｒの処理流量の中空
糸Ｍ濾過装置では濾過面積的３０００ｍ’ 、１回の逆
洗までの単位濾過面積当りの懸濁物量的２０ｇ／ｍ ’
、７ｆａ過室容ｔ’ｆｆ１０ｍ”とすると、（３００
０ｍ２Ｘ２０ｇ／ｍ’ ）
ｘ （１０ｍ ” Ｘ １０００ｍ／ ｍ ’ ） ＝
約６０００１）ＤＩとなる。従って６０００ｐｐｎもの
非常に高濃度の逆洗水が約１０ｍ１も下流に流れるなめ
、下流の固化装置の負荷量が多くなってしまう。Furthermore, since backwash water is a highly concentrated waste liquid containing a large amount of suspended matter, for example, in a hollow fiber M filtration device with a processing flow rate of 500 m''/hr, the filtration area is 3000 m', and the unit filtration up to one backwash is Suspension amount per area 20g/m'
, 7fa excess chamber capacity t'ff10m'', (300
0m2X20g/m') x (10m'' x 1000m/m') =
Approximately 60001) DI. Therefore, backwash water with a very high concentration of 6,000 ppn flows downstream by approximately 10 ml, which increases the load on the downstream solidification device.
一方、−次系の廃液に含まれる懸濁物は非結晶質の鉄酸
化物が多く、これらは水中では水分子と水和して比重が
１に近い、従って逆洗水受槽６にて沈降分離した場合、
数日間では十分沈降しきれず、処理時間が大幅に遅くな
るという問題があった。また逆洗水受槽６は大型であり
、設備費上昇の原因ともなっていた。On the other hand, the suspended solids contained in the waste liquid of the secondary system are mostly amorphous iron oxides, which are hydrated with water molecules in water and have a specific gravity close to 1. Therefore, they settle in the backwash water receiving tank 6. If separated,
There was a problem in that the sedimentation could not be completed in a few days and the processing time was significantly delayed. Furthermore, the backwash water receiving tank 6 is large, which also causes an increase in equipment costs.
本発明は上述した問題点を解決するなめになされたもの
で、中空糸膜濾過装置の逆洗水の処理を効果的に行え、
逆洗水を受入れる下流側設備の負荷を軽減し、しかも設
備の縮小化が図れる中空糸、膜濾過装置の逆洗水処理方
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 can effectively treat backwash water of a hollow fiber membrane filtration device.
It is an object of the present invention to provide a method for treating backwash water in a hollow fiber or membrane filtration device, which reduces the load on downstream equipment that receives backwash water and can downsize the equipment.
［発明の構成］
（問題点を解決するための手段）
本発明方法の中空糸膜濾過装置の逆洗水処理方法は、液
中の懸濁物を中空糸膜フ身ルタにより一過する濾過装置
の前記中空糸膜フィルタを透過する液を逆流して得た逆
洗水中の懸濁物を濾過処理する方法において、上記逆洗
水を焼結金属または浸透性セラミックからなるフィルタ
に透過させて濾過処理することを特徴とするものである
。[Structure of the Invention] (Means for Solving the Problems) The backwash water treatment method for a hollow fiber membrane filtration device according to the present invention is a filtration method in which suspended matter in a liquid is filtered through a hollow fiber membrane filter. In a method for filtering suspended matter in backwash water obtained by backflowing a liquid that passes through the hollow fiber membrane filter of an apparatus, the backwash water is passed through a filter made of sintered metal or permeable ceramic. It is characterized by filtration treatment.
（作 用）
本発明の中空糸膜濾過装置の逆洗水処理方法においては
、中空糸膜フィルタとほぼ同じ細孔径（例えば、０．１
μＩ）を有する焼結金属またはセラミック族の中空管型
フィルタを用いることで、高濃度、高放射能の逆洗水を
処理することができる。特に、小容量の容器に収納した
中空管型フィルタにて逆洗水を濾過処理し、この容器内
に１回ないし数回の逆洗にて発生した全ての懸濁物を納
めたまま容器ごと廃棄することにより、多量の高放射能
ｇ濁物を集積化・小容量化して処理することができ、ま
た、下流側に送られる逆洗排水はほとんど懸濁物を含ま
ないため、下流側の逆洗水受槽、濾過装置および固化装
置の負荷を著しく減少することができる。(Function) In the backwash water treatment method of the hollow fiber membrane filtration device of the present invention, the pore size is approximately the same as that of the hollow fiber membrane filter (for example, 0.1
By using a hollow tube filter of the sintered metal or ceramic family having μI), backwash water with high concentration and high radioactivity can be treated. In particular, backwash water is filtered using a hollow tube filter housed in a small-capacity container, and all suspended matter generated during one or several backwashes is stored in the container. By disposing of the whole substance, a large amount of highly radioactive turbidity can be collected and treated in a small volume.In addition, the backwash wastewater sent to the downstream side contains almost no suspended matter, so the downstream side The load on the backwash water tank, filtration device and solidification device can be significantly reduced.
（実施例）
以下、本発明の一実施例について図を参照にして説明す
る。なお、第２図と同一部分には同一符号を付して重複
する部分の説明を省略する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. Note that the same parts as in FIG. 2 are given the same reference numerals, and the explanation of the overlapping parts will be omitted.
第１図は実施例の構成系統を示す図で、中空糸１１濾過
装置２の濾過室２ａには、空気圧送用の高圧空気圧送ラ
イン７が配設されており、また逆洗水排出ライン５には
セラミック濾過装置８が介装されている。セラミック濾
過装置８の内部には、焼結金属またはセラミック族の中
空管型フィルタ９が収納されている。FIG. 1 is a diagram showing the structural system of the embodiment, in which a high-pressure air pressure feeding line 7 for air pressure feeding is arranged in the filtration chamber 2a of the hollow fiber 11 filtration device 2, and a backwash water discharge line 5 is provided. A ceramic filtration device 8 is interposed therein. Inside the ceramic filtration device 8, a hollow tube filter 9 made of sintered metal or ceramic is housed.
この中空管型フィルタ９としては、例えば中空糸膜フィ
ルタとほぼ同程度の細孔径（０，１μｉ）を有したもの
がよく、その除去能力は細孔径とほぼ同径以上の懸濁物
の除去が可能である。The hollow tube type filter 9 is preferably one having a pore diameter (0.1 μi) that is approximately the same as that of a hollow fiber membrane filter, and its removal ability is for suspended particles having a diameter approximately equal to or larger than the pore diameter. Removal is possible.
このような構成の一過装置における逆洗水の処理方法は
、まず高圧空気ライン７から中空糸膜濾過装置２内の濾
過室２ａに圧縮空気を圧送して、貯溜された逆洗水を逆
洗水排出ライン５へ排出する。排出した逆洗水は、逆洗
水排出ライン５を介してセラミック濾過装置８へ送り、
ここで濾過室内に多数配設されたセラミック製中空管型
フィルタ９に逆洗水を透過させて懸濁物を除去する。The method for treating backwash water in a filtration device having such a configuration is to first send compressed air under pressure from the high-pressure air line 7 to the filtration chamber 2a in the hollow fiber membrane filtration device 2, and then backwash the stored backwash water. Discharge to wash water discharge line 5. The discharged backwash water is sent to the ceramic filtration device 8 via the backwash water discharge line 5,
Here, the backwash water is passed through a large number of ceramic hollow tube filters 9 arranged in the filtration chamber to remove suspended matter.
ところで、中空糸膜フィルタはその糸外径が０．５〜２
１程度であるのに対し、このセラミック製フィルタ９は
、脆性に対する強度を保持させるために管の外径が１０
〜５０Ｉｎ程度必要である。By the way, the hollow fiber membrane filter has an outer diameter of 0.5 to 2.
In contrast, this ceramic filter 9 has an outer diameter of about 10 mm in order to maintain strength against brittleness.
~50 In is required.
従って中空糸膜フィルタのように多数本の糸を集約して
フィルタの濾過面積を大きくして処理する濾過方式を採
用すると、濾過面積が非常に大きくなってしまうが、処
理流速を上げて処理する方式とすることで一過面積を小
さくすることができる。即ち、焼結金属やセラミック材
は高硬質であり、高い処理流速時における高差圧に対し
て非常に耐久力があるため、処理流速を上昇させても何
ら問題は無い、中空糸膜フィルタの場合は、高分子材料
であるため、中空糸の内外の圧力差に弱く、従って処理
時の差圧をある値以上に上げることができず、処理流速
を上昇させることは不可能である。Therefore, if a filtration method is adopted, such as a hollow fiber membrane filter, in which many threads are aggregated to increase the filtration area of the filter, the filtration area becomes extremely large, but it is necessary to increase the processing flow rate. By using this method, the transient area can be reduced. In other words, sintered metals and ceramic materials are highly hard and highly resistant to high differential pressures at high processing flow rates, so there is no problem with increasing the processing flow rate. Since it is a polymeric material, it is susceptible to the pressure difference between the inside and outside of the hollow fiber, and therefore, the pressure difference during processing cannot be increased above a certain value, and it is impossible to increase the processing flow rate.
このように焼結金属やセラミック部材からなる中空管型
フィルタを使用することにより、処理時の差圧を高くす
ることができるので、長期間の使用により付着した懸濁
物による差圧上昇が生じても、より高い圧力の空気を高
圧空気ライン７から導くことによりフィルタの処理能力
を回復することができる。By using a hollow tube filter made of sintered metal or ceramic material in this way, the differential pressure during processing can be increased, so the increase in differential pressure due to suspended matter that has accumulated during long-term use can be avoided. Even if this occurs, the processing capacity of the filter can be restored by introducing higher pressure air from the high pressure air line 7.
また、高い流速で処理することができることから中空管
型フィルタ９の本数を少なくして、フィルタ容器ＩＯの
容積を少なくすることもできる。Further, since processing can be performed at a high flow rate, the number of hollow tube filters 9 can be reduced, and the volume of the filter container IO can also be reduced.
こうしてセラミック濾過装置で処理された逆洗水は、は
とんどの懸濁物が濾過されており、そのまま再使用水槽
１１へ送られて原子カプラント内の補給水として再使用
することができる。The backwash water treated with the ceramic filtration device has most of the suspended matter filtered out, and can be directly sent to the reuse water tank 11 and reused as make-up water in the atomic coupler.
またフィルタの交換作業も容易で、例えば逆洗水１０ｍ
’を濾過した場合、約６０ｈＨの懸濁物が付着しフィ
ルタ交換が必要となるが、この場合、中空管型フィルタ
９を内装したフィルタ容器１０を容器ごと廃棄して、新
しい中空管型フィルタを内装したフィルタ容器に交換す
ればよい。It is also easy to replace the filter, for example, with 10 m of backwash water.
', approximately 60hH of suspended matter adheres to the filter and the filter needs to be replaced. Just replace it with a filter container with a filter inside.
このように、中空糸膜濾過装置２の逆洗によって多量に
発生する逆洗水は、焼結金属またはセラミック製の中空
管型フィルタ９により濾過されるので、下流側に高濃度
、高放射能の懸濁物が流入することがなくなり、下流側
装置の高放射能による汚染を防止できる。また固化装置
の負荷を低減することもできる。さらにこの中空管型フ
ィルタが中空糸膜フィルタと同程度以上の懸濁物除去性
能を有することから、逆洗水受槽による沈降分離工程を
省いて直接再使用水槽に排出することができ、処理時間
の短縮化とともに設備の縮小化を図ることができる。In this way, a large amount of backwash water generated by backwashing of the hollow fiber membrane filtration device 2 is filtered by the hollow tube filter 9 made of sintered metal or ceramic, so that it is highly concentrated and emits on the downstream side. This eliminates the inflow of radioactive suspended solids and prevents contamination of downstream equipment with high radioactivity. It is also possible to reduce the load on the solidification device. Furthermore, since this hollow tube type filter has the same level of suspended solids removal performance as a hollow fiber membrane filter, it can be directly discharged to a reuse water tank without the sedimentation separation process in a backwash water receiving tank. It is possible to shorten the time and downsize the equipment.
［発明の効果］
以上詳述したように本発明の中空糸膜ｐ３！！装置の逆
洗水処理方法によれば、高濃度、高放射能でかつ沈降分
離しにくい逆洗水を効果的に処理することができ、さら
に逆洗水を処理する下流側設備の負荷を著しく低減する
とともに設備の縮小化が可能となる。[Effects of the Invention] As detailed above, the hollow fiber membrane p3 of the present invention! ! The device's backwash water treatment method can effectively treat backwash water that is highly concentrated, highly radioactive, and difficult to settle and separate, and also significantly reduces the load on downstream equipment that processes backwash water. At the same time, it is possible to downsize the equipment.
第１図は本発明方法を適用した一実施例の構成系統を示
す図、第２図は従来の逆洗水処理方法の構成系統を示す
図である。
２・・・・・・・・・中空糸Ｍ濾過装置７・・・・・・
・・・高圧空気圧送ライン８・・・・・・・・・セラミ
ック？過装置９・・・・・・・・・中空管型フィルタ出
願人 株式会社 東芝
代理人 弁理士 須 山 佐 −
第１図
篤２図FIG. 1 is a diagram showing a structural system of an embodiment to which the method of the present invention is applied, and FIG. 2 is a diagram showing a structural system of a conventional backwash water treatment method. 2...Hollow fiber M filtration device 7...
...High pressure air feed line 8... Ceramic? Filter device 9...Hollow tube type filter Applicant Toshiba Corporation Patent attorney Sa Yama - Figure 1 Atsushi Figure 2
Claims (3)
濾過装置の前記中空糸膜フィルタを透過する液を逆流し
て得た逆洗水中の懸濁物を濾過処理する方法において、 上記逆洗水を焼結金属または浸透性セラミックからなる
フィルタに透過させて濾過処理することを特徴とする中
空糸膜濾過装置の逆洗水処理方法。(1) In a method for filtering suspended matter in backwash water obtained by backflowing a liquid that passes through the hollow fiber membrane filter of a filtration device that filters suspended matter in a liquid using a hollow fiber membrane filter, 1. A backwash water treatment method for a hollow fiber membrane filtration device, characterized in that backwash water is filtered by passing through a filter made of sintered metal or permeable ceramic.
空管型のフィルタであることを特徴とする特許請求の範
囲第１項記載の中空糸膜濾過装置の逆洗水処理方法。(2) A backwash water treatment method for a hollow fiber membrane filtration device according to claim 1, wherein the sintered metal or permeable ceramic filter is a hollow tube type filter.
式であることを特徴とする特許請求の範囲第２項記載の
中空糸膜濾過装置の逆洗水処理方法。(3) A backwash water treatment method for a hollow fiber membrane filtration device according to claim 2, wherein the hollow tube type filter is of a small capacity disposable type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62107751A JPS63274405A (en) | 1987-04-30 | 1987-04-30 | Reverse washing treatment method of hollow fiber membrane filter apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62107751A JPS63274405A (en) | 1987-04-30 | 1987-04-30 | Reverse washing treatment method of hollow fiber membrane filter apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63274405A true JPS63274405A (en) | 1988-11-11 |
Family
ID=14467046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62107751A Pending JPS63274405A (en) | 1987-04-30 | 1987-04-30 | Reverse washing treatment method of hollow fiber membrane filter apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63274405A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324593A (en) * | 2000-05-18 | 2001-11-22 | Japan Organo Co Ltd | Radioactive waste treatment system for boiling water type nuclear power plant |
| JP2006035035A (en) * | 2004-07-23 | 2006-02-09 | Fuji Electric Holdings Co Ltd | Water-treating method and method of operating apparatus for treating water by membrane filtration |
| JP2012163425A (en) * | 2011-02-07 | 2012-08-30 | Mitsubishi Heavy Ind Ltd | Treatment method and treatment device of plutonium-containing waste liquid |
| CN109966925A (en) * | 2019-03-02 | 2019-07-05 | 汤宇 | It is a kind of to dodge the clear membrane process of quick-fried method recoil and its device |
-
1987
- 1987-04-30 JP JP62107751A patent/JPS63274405A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324593A (en) * | 2000-05-18 | 2001-11-22 | Japan Organo Co Ltd | Radioactive waste treatment system for boiling water type nuclear power plant |
| JP2006035035A (en) * | 2004-07-23 | 2006-02-09 | Fuji Electric Holdings Co Ltd | Water-treating method and method of operating apparatus for treating water by membrane filtration |
| JP4569200B2 (en) * | 2004-07-23 | 2010-10-27 | 富士電機ホールディングス株式会社 | Water treatment method and membrane filtration water treatment device operation method |
| JP2012163425A (en) * | 2011-02-07 | 2012-08-30 | Mitsubishi Heavy Ind Ltd | Treatment method and treatment device of plutonium-containing waste liquid |
| CN109966925A (en) * | 2019-03-02 | 2019-07-05 | 汤宇 | It is a kind of to dodge the clear membrane process of quick-fried method recoil and its device |
| CN109966925B (en) * | 2019-03-02 | 2023-11-24 | 汤宇 | Backflushing film cleaning process and device by flash explosion method |
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