JP2012500117A - 膜濾過システムの逆洗エネルギ効率の改善 - Google Patents
膜濾過システムの逆洗エネルギ効率の改善 Download PDFInfo
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- 238000005374 membrane filtration Methods 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 131
- 239000012510 hollow fiber Substances 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 52
- 238000001914 filtration Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000011001 backwashing Methods 0.000 claims abstract description 35
- 239000012466 permeate Substances 0.000 claims abstract description 33
- 239000007787 solid Substances 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 21
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 239000000706 filtrate Substances 0.000 claims description 15
- 230000035699 permeability Effects 0.000 claims description 9
- 238000007654 immersion Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 102100024209 CD177 antigen Human genes 0.000 description 2
- 101100396524 Capsicum annuum eIF4E gene Proteins 0.000 description 2
- 101000980845 Homo sapiens CD177 antigen Proteins 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/22—Controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2315/00—Details relating to the membrane module operation
- B01D2315/06—Submerged-type; Immersion type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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Abstract
【選択図】図1
Description
(i)懸濁液に浸された透過性中空糸膜の壁の前後に圧力差を生じさせて、透過性中空糸膜の外面に懸濁液を押しやり、透過性中空糸膜の壁による濾過を誘発し、持続させるステップが含まれることと、
(a)懸濁液の少なくとも一部が膜壁を通って、透過性中空糸膜の内腔から透過液として排出されることと、
(b)固形物の少なくとも一部が、透過性中空糸膜上または内に残留するか、さもなければ、透過性中空糸膜のまわりの液体内に懸濁固形物として残留することと、さらに、
(ii)存在する場合、透過性中空糸膜の内腔及び/または濾過液マニホルド内に残存する透過液を利用し、透過性中空糸膜のバブルポイントより低い可変圧のガスを透過液に作用させて、内腔及び/または濾過液マニホルド内の透過液の少なくとも一部を、透過性中空糸膜の孔を通して置き換え、その結果、透過性中空糸膜上または内に残留する固形物が除去されるようにすることによって、膜の孔を定期的に逆洗するステップが含まれることを特徴とする。
(i)透過性中空糸膜の壁の前後に、透過性中空糸膜の内腔面に懸濁液を作用させる圧力差を生じさせて、透過性中空糸膜の壁による濾過を誘発し、持続させるステップが含まれることと、
(a)懸濁液の少なくとも一部が透過性中空糸膜の壁を通って、透過性中空糸膜の外面から透過液として排出されることと、
(b)少なくとも一部の固形物が、透過性中空糸膜上または内に残留するか、さもなければ、透過性中空糸膜内に懸濁固形物として残留することと、さらに、
(ii)濾過プロセスを停止または中断するステップと、
(iii)濾過プロセスの中断後、濾過システム内に残存する透過液を利用し、透過性中空糸膜のバブルポイントより低い可変圧のガスを透過液に作用させて、透過液の少なくとも一部を、透過性中空糸膜の孔を通して置き換え、その結果、透過性中空糸膜上または内に残留する固形物が除去されるようにすることによって、透過性中空糸膜の孔を定期的に逆洗するステップが含まれることを特徴とする。
(i)透過性膜の壁の前後に、透過性膜の第1の側に懸濁液を作用させる圧力差を生じさせて、透過性膜の壁による濾過を誘発し、持続させるステップが含まれることと、
(a)懸濁液の少なくとも一部が透過性膜の壁を通って、透過性膜の第2の側から透過液として排出されることと、
(b)少なくとも一部の固形物が、透過性膜上または内に残留するか、さもなければ、透過性膜の第1の側のまわりの液体内に懸濁固形物として残留することと、さらに、
(ii)濾過プロセスの中断後、透過性膜の第2の側に残存する透過液を利用し、透過性膜のバブルポイントより低い可変圧のガスを透過液に作用させて、透過液の少なくとも一部を、透過性膜の第2の側から透過性膜の孔を通して置き換え、その結果、透過性膜上または内に残留する固形物が除去されるようにすることによって、透過性膜の孔を定期的に逆洗するステップが含まれることを特徴とする。
(i)透過性膜の壁の前後に圧力差を生じさせて、透過性膜の第1の側に懸濁液を押しやり、透過性膜の壁による濾過を誘発し、持続させるステップが含まれることと、
(a)懸濁液の少なくとも一部が透過性膜の壁を通って、透過性膜の第2の側から透過液として排出されることと、
(b)固形物の少なくとも一部が、透過性膜上または内に残留するか、さもなければ、透過性膜の第1の側のまわりの液体内に懸濁固形物として残留することと、さらに、
(ii)濾過プロセスの中断後、透過性膜の第2の側に残存する透過液を利用し、透過性膜のバブルポイントより低い可変圧のガスを透過液に作用させて、透過液の少なくとも一部を、透過性膜の第2の側から透過性膜の孔を通して置き換え、その結果、透過性膜上または内に残留する固形物が除去されるようにすることによって、透過性膜の孔を定期的に逆洗するステップが含まれることを特徴とする。
6 中空糸膜
7 上方ヘッダ
8 下方ヘッダ
9 加圧供給容器
10 上方ポート
11 下方ポート
12 濾過液除去管路
13 濾過液貯留室
14 濾過液貯留室
15 供給管路
16 上方逆洗管路
17 廃液除去管路
18 ガス管路
19 加圧ガス源
20 加圧ガス源
21 ガス制御管路
22 ガス管路
23 ガス管路
AV1〜5 弁
PRV1〜3 ガス圧調整弁
SV1 制御弁
SV2 制御弁
Claims (18)
- 少なくとも1つの透過性中空糸膜を含む膜濾過システムの逆洗方法であって、濾過プロセスが停止するかまたは中断すると、前記システム内に依然として存在する透過液に可変圧の加圧ガスを作用させて、逆洗プロセス中、前記透過性中空糸膜の孔を逆洗するための液体を供給するステップが含まれる方法。
- 懸濁液から固形物を濾過する方法であって、
(i)前記懸濁液に浸された透過性中空糸膜の壁の前後に圧力差を生じさせて、前記透過性中空糸膜の外面に前記懸濁液を押しやり、前記透過性中空糸膜の壁による濾過を誘発し、持続させるステップが含まれることと、
(a)前記懸濁液の少なくとも一部が前記膜壁を通って、前記透過性中空糸膜の内腔から透過液として排出されることと、
(b)前記固形物の少なくとも一部が、前記透過性中空糸膜上または内に残留するか、さもなければ、前記透過性中空糸膜のまわりの前記液体内に懸濁固形物として残留することと、さらに、
(ii)存在する場合、前記透過性中空糸膜内腔及び/または濾過液マニホルド内に残存する透過液を利用し、前記透過性中空糸膜のバブルポイントより低い可変圧のガスを前記透過液に作用させて、前記内腔及び/または濾過液マニホルド内の透過液の少なくとも一部を、前記透過性中空糸膜の孔を通して置き換え、その結果、前記透過性中空糸膜上または内に残留する前記固形物が除去されるようにすることによって、膜の孔を定期的に逆洗するステップが含まれることを特徴とする、
方法。 - 濾過システムにおける懸濁液から固形物を濾過する方法であって、
(i)透過性中空糸膜の壁の前後に、前記透過性中空糸膜の内腔面に懸濁液を作用させる圧力差を生じさせて、前記透過性中空糸膜の壁による濾過を誘発し、持続させるステップが含まれることと、
(a)前記懸濁液の少なくとも一部が前記透過性中空糸膜の壁を通って、前記透過性中空糸膜の外面から透過液として排出されることと、
(b)少なくとも一部の固形物が、前記透過性中空糸膜上または内に残留するか、さもなければ、前記透過性中空糸膜内に懸濁固形物として残留することと、さらに、
(ii)濾過プロセスを停止または中断するステップと、
(iii)前記濾過プロセスの中断後、前記濾過システム内に残存する透過液を利用し、前記透過性中空糸膜のバブルポイントより低い可変圧のガスを前記透過液に作用させて、前記透過液の少なくとも一部を、前記透過性中空糸膜の孔を通して置き換え、その結果、前記透過性中空糸膜上または内に残留する前記固形物が除去されるようにすることによって、前記透過性中空糸膜の孔を定期的に逆洗するステップが含まれることを特徴とする、
方法。 - 前記ガス圧が第1と第2の値の間で変えられることと、前記第1の値が前記第2の値より大きいことを特徴とする、請求項1〜3の任意の1つに記載の方法。
- 前記第1と第2の圧力の値が、測定可能な膜特性を用いて決定されることを特徴とする、請求項4に記載の方法。
- 前記膜特性が膜透過率であることを特徴とする、請求項5に記載の方法。
- 前記膜特性が膜抵抗であることを特徴とする、請求項5に記載の方法。
- 前記第1の値のガス圧が、膜透過率が第1の所定の値以下の場合に利用され、前記第2の値のガス圧が、膜透過率が第2の所定の値以上の場合に利用されることを特徴とする、請求項4〜7のいずれか1つに記載の方法。
- 前記第1の値のガス圧が、膜抵抗が第1の所定の値以上の場合に利用され、前記第2の値のガス圧が、膜抵抗が第2の所定の値以下の場合に利用されることを特徴とする、請求項4〜7のいずれか1つに記載の方法。
- 前記第1の所定の値と前記第2の所定の値が異なることを特徴とする、請求項4〜9のいずれか1つに記載の方法。
- 前記第1の所定の値と前記所定の値が同じであることを特徴とする、請求項4〜9のいずれか1つに記載の方法。
- 前記ガス圧が、前記第1の値のガス圧と前記第2の値のガス圧との間で連続して変えられることを特徴とする、請求項4〜11のいずれか1つに記載の方法。
- 前記ガス圧が、前記第1の値のガス圧と前記第2の値のガス圧の間で交互に切り替えられることを特徴とする、請求項4〜11のいずれか1つに記載の方法。
- 固形物が、逆洗ステップ中に前記膜のまわりのバルク液中に取り出されることを特徴とする、請求項1〜13のいずれか1つに記載の方法。
- 前記濾過システムに複数の膜モジュールが含まれることを特徴とする、請求項1〜14のいずれか1つに記載の方法。
- 前記濾過システムに、複数の中空糸膜モジュールが含まれることを特徴とする、請求項1〜15のいずれか1つに記載の方法。
- 前記膜濾過システムが加圧式膜濾過システムであることを特徴とする、請求項15〜16のいずれか1つに記載の方法。
- 前記膜濾過システムが浸漬式膜濾過システムであることを特徴とする、請求項15〜16のいずれか1つに記載の方法。
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PCT/US2009/053979 WO2010021959A1 (en) | 2008-08-20 | 2009-08-17 | Improved membrane system backwash energy efficiency |
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Also Published As
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EP2315625A4 (en) | 2013-03-20 |
AU2009282912A1 (en) | 2010-02-25 |
CN102123784A (zh) | 2011-07-13 |
EP2315625A1 (en) | 2011-05-04 |
WO2010021959A1 (en) | 2010-02-25 |
US20110139715A1 (en) | 2011-06-16 |
AU2009282912B2 (en) | 2014-11-27 |
US8652331B2 (en) | 2014-02-18 |
EP2315625B1 (en) | 2018-05-16 |
CA2734796A1 (en) | 2010-02-25 |
KR20110044312A (ko) | 2011-04-28 |
NZ591259A (en) | 2013-02-22 |
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