JP2010058120A - 膜濾過システムの洗浄 - Google Patents
膜濾過システムの洗浄 Download PDFInfo
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- 239000012530 fluid Substances 0.000 description 9
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000013043 chemical agent Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 4
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- 229910019093 NaOCl Inorganic materials 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
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- 239000012510 hollow fiber Substances 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 1
- 229960002218 sodium chlorite Drugs 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】膜壁(15)の一方の側に洗浄液(14)を適用するステップと、膜壁(15)を横切って圧力差をかけて、膜壁(15)の一方の側から膜壁(15)の他方の側へ壁(15)を通じる洗浄液(14)の流れを生じさせるステップと、膜壁(15)を横切って逆の圧力差をかけて、膜壁(15)の他方の側から膜壁(15)の一方の側へ戻る、壁(15)を通じる洗浄液(14)の流れを生じさせるステップと、を備える洗浄方法と、必要とされる化学的洗浄液の量を決定するための方法とが開示される。
【選択図】図1
Description
(a)懸濁液の幾分かは、膜の壁を通過して中空の膜の内腔から浄化液又は濾過液として引き出され、
(b)少なくとも幾分かの固形分は、中空の膜の上、若しくは中に保持され、又は別様に膜を取り囲む液体の中に懸濁固形分として保持され、洗浄方法は、
(i)少なくとも部分的に、液体を膜の濾過液側から除去するステップと、
(ii)少なくとも部分的に、液体を膜の外側から除去するステップと、
(iii)膜壁の外側に洗浄液を適用するステップと、
(iv)前記膜壁を横切って圧力差をかけて前記壁を通じる、膜の外側から膜内腔の中への洗浄液の流れを生じさせ、前記内腔を洗浄液で少なくとも部分的に充填するステップと、
(v)膜の外側を隔離するステップと、
(vi)圧力をかけられたガスを膜壁の濾過液側に適用し、膜壁を通じる外側へ戻る洗浄液の流れを生じさせるステップと
(vii)前記洗浄液の流れの結果として、膜の外側に発生する増加した圧力を累積するステップと、
(viii)前記圧力をかけられたガスによって膜壁の濾過液側へ適用された圧力を開放し、前記膜壁の外側に累積された圧力の効果の下で、外側から濾過液側への前記膜を通じる前記洗浄液の流れを生じさせるステップと、
を備えている。
(a) 懸濁液の幾分かは、膜の壁を通過して中空の膜の内腔から浄化液又は濾過液として引き出され、
(b) 少なくとも幾分かの固形分は、中空の膜の上、若しくは中に保持され、又は別様に膜を取り囲む液体の中に懸濁固形分として保持され、洗浄方法は、
(i)膜壁の一方の側に洗浄液を適用するステップと、
(ii)前記膜壁を横切って圧力差をかけて、膜壁の一方の側から膜壁の他方の側への前記壁を通じる洗浄液の流れを生じさせるステップと、
(iii)前記膜壁を横切って逆の圧力差をかけて、膜壁の前記他方の側から膜壁の前記一方の側へ戻る、前記壁を通じる前記洗浄液の流れを生じさせるステップと、
を備えている。
(a)懸濁液の幾分かは、膜の壁を通過して中空の膜の内腔から浄化液又は濾過液として引き出され、
(b)少なくとも幾分かの固形分は、中空の膜の上、若しくは中に保持され、又は別様に膜を取り囲む液体の中に懸濁固形分として保持され、洗浄方法は、
(i)少なくとも部分的に、液体を膜の濾過液側から除去するステップと、
(ii)少なくとも部分的に、液体を膜の外側から除去するステップと、
(iii)膜壁の外側に洗浄液を適用するステップと、
(iv)前記膜壁を横切って圧力差をかけて膜の外側から膜内腔の中への前記壁を通じる洗浄液の流れを生じさせ、前記内腔を洗浄液で少なくとも部分的に充填するステップと、
(v)前記膜壁を横切って圧力差をかけて膜の内腔の側から膜の内腔の外側へ戻る、前記壁を通じる前記洗浄液の流れを生じさせるステップと、
を備えている。
pH及び/又は前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
pH及び/又は膜抵抗があらかじめ決められた値を達成するときに前記化学洗浄を中止するステップと、
を備えている。
pH及び/又は前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
洗浄の経過時間を測定するステップと、
時間に対するpHの変化率(dpH/dt)及び/又は時間に対する膜抵抗の変化率(dR/dt)を計算するステップと、
dpH/dt及び/又はdR/dtがあらかじめ決められた値に達したときに前記化学洗浄を中止するステップと
を備えている。
前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
洗浄の経過時間を測定するステップと、
時間に対する膜抵抗の変化率(dR/dt)を計算するステップと、
(dR/dt)を使用して、洗浄の完了までの時間を計算するステップと、
を備えている。
洗浄の間に存在する化学洗浄剤の量を増加するステップと、
前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
膜抵抗があらかじめ決められた値に達したときに、化学洗浄剤の増加を中止するステップと、
を備えている。
本発明の実施態様の例は以下のとおりである。
(1)圧力差が、懸濁液中に浸漬された、透過性を有する中空の膜の壁を横切ってかけられるタイプの設備における、透過性を有する中空な膜を洗浄する方法であって、前記懸濁液は、多孔性かつ中空の前記膜の外面に適用されて前記膜壁を通じた濾過作用を生じさせ、かつ維持しており、
(a)前記懸濁液の幾分かは、前記膜の壁を通過して前記中空の膜の内腔から浄化液又は濾過液として引き出され、
(b)少なくとも幾分かの固形分は、前記中空の膜の上、若しくは中に、又は別様に膜を取り囲む液体の中に懸濁された固形分として保持され、
前記洗浄方法は、
(i)少なくとも部分的に、液体を前記膜の濾過液側から除去するステップと、
(ii)少なくとも部分的に、液体を前記膜の外側から除去するステップと、
(iii)前記膜壁の外側に洗浄液を適用するステップと、
(iv)前記膜壁を横切って圧力差をかけて前記壁を通じる、前記膜の外側から前記膜内腔の中への前記洗浄液の流れを生じさせ、前記内腔を洗浄液で少なくとも部分的に充填するステップと、
(v)前記膜の外側を隔離するステップと、
(vi)加圧されたガスを前記膜壁の濾過液側に適用し、前記膜壁を通じる前記外側へ戻る前記洗浄液の流れを生じさせるステップと
(vii)前記洗浄液の流れの結果として前記膜の外側に発生する増加した圧力を累積するステップと、
(viii)前記加圧されたガスによって前記膜壁の濾過液側へ適用された圧力を開放し、前記膜壁の外側に累積された圧力の効果の下で、前記外側から前記濾過液側への前記膜を通じる前記洗浄液の流れを生じさせるステップと、
を備える、方法。
(2)洗浄液が化学的洗浄液であることを特徴とする実施態様(1)に記載の方法。
(3)ステップvi)において、ガスは、前記膜内腔が実質的に洗浄液で洗い流されるように適用されることを特徴とする実施態様(1)に記載の方法。
(4)前記圧力は、ステップvii)において、前記膜壁の前記外側に設けられたガス空間中に累積されることを特徴とする実施態様(1)に記載の方法。
(5)前記圧力は、ステップvii)において、ブラダー装置内に累積されることを特徴とする実施態様(1)に記載の方法。
(6)ステップiv)の前記圧力差は、ガス圧を前記膜壁の前記外側に適用することによって提供されることを特徴とする実施態様(1)に記載の方法。
(7)ステップiv)の前記圧力差は、前記濾過液側に真空を適用することによって提供されることを特徴とする実施態様(1)に記載の方法。
(8)圧力差が、懸濁液中に浸漬された、透過性を有する中空の膜の壁を横切ってかけられるタイプの設備における、前記透過性を有する中空な膜を洗浄する方法であって、前記懸濁液は、前記多孔性中空膜の外面に適用されて前記膜壁を通じた濾過作用を生じさせ、かつ維持しており、
(c) 前記懸濁液の幾分かは、前記膜の壁を通過して前記中空の膜の内腔から浄化液又は濾過液として引き出され、
(d) 少なくとも幾分かの固形分は、中空の膜の上、若しくは中に、又は別様に膜を取り囲む液体の中に懸濁された固形分として保持され、
前記洗浄方法は、
(i)前記膜壁の一方の側に洗浄液を適用するステップと、
(ii)前記膜壁を横切って圧力差をかけて、前記膜壁の一方の側から前記膜壁の他方の側への前記壁を通じる前記洗浄液の流れを生じさせるステップと、
(iii)前記膜壁を横切って逆の圧力差をかけて、前記膜壁の前記他方の側から前記膜壁の前記一方の側へ戻る、前記壁を通じる前記洗浄液の流れを生じさせるステップと、
を備えている方法。
(9)前記ステップii)の前記圧力差は、ガス圧を前記膜壁の前記一方の側に適用することによって提供されることを特徴とする実施態様(8)に記載の方法。
(10)前記ステップii)の前記圧力差は、前記膜壁の前記他方の側に真空を適用することによって提供されることを特徴とする実施態様(8)に記載の方法。
(11)前記ステップiii)の前記逆の圧力差は、ガス圧を前記膜壁の前記他方の側に適用することによって提供されることを特徴とする実施態様(8)に記載の方法。
(12)前記ステップiii)の前記逆の圧力差は、前記膜壁の前記一方の側に真空を適用することによって提供されることを特徴とする実施態様(8)に記載の方法。
(13)前記洗浄液は、化学的洗浄液であることを特徴とする実施態様(8)に記載の方法。
(14)圧力差が、懸濁液中に浸漬された透過性を有する中空の膜の壁を横切ってかけられるタイプの設備における、前記透過性を有する中空な膜を洗浄する方法であって、前記懸濁液は、前記多孔性中空膜の外面に適用されて前記膜壁を通じた濾過作用を生じさせ、かつ維持しており、
(a) 前記懸濁液の幾分かは、前記膜の壁を通過して前記中空の膜の内腔から浄化液又は濾過液として引き出され、
(b) 少なくとも幾分かの固形分は、前記中空の膜の上、若しくは中に、又は別様に膜を取り囲む液体の中に懸濁された固形分として保持され、
前記洗浄方法は、
(i)少なくとも部分的に、液体を前記膜の濾過液側から除去するステップと、
(ii)少なくとも部分的に、液体を前記膜の外側から除去するステップと、
(iii)前記膜壁の外側に洗浄液を適用するステップと、
(iv)前記膜壁を横切って圧力差をかけて前記膜の外側から前記膜内腔の中への前記壁を通じる前記洗浄液の流れを生じさせ、前記内腔を洗浄液で少なくとも部分的に充填するステップと、
(v)前記膜壁を横切って圧力差をかけて前記膜の内腔の側から前記膜の内腔の外側へ戻る、前記壁を通じる前記洗浄液の流れを生じさせるステップと、
を備えている方法。
(15)前記ステップv)における前記圧力差は、加圧されたガスを前記膜壁の内腔側に適用することによって生成され、前記膜壁を通じる前記外側へ戻る前記洗浄液の流れを生じさせることを特徴とする実施態様(14)に記載の方法。
(16)前記洗浄方法の前記複数のステップは周期的に繰り返され、前記洗浄液は、前記膜の一方の側から前記他方の側へ前記膜壁を通じて交互に動かされることを特徴とする実施態様(14)に記載の方法。
(17)前記洗浄液は、化学的洗浄液であることを特徴とする実施態様(14)に記載の方法。
6・・・膜
7・・・内腔
8・・・下部ポット
9・・・上部ポット
10・・・容器
11、17・・・バルブ
12・・・濾過液収集チャンバ
13・・・ポート
14・・・洗浄液
15・・・膜壁
16・・・ガス空間、ブラダー
18、19・・・ライン
Claims (7)
- pH及び/又は前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
pH及び/又は膜抵抗があらかじめ決められた値に達するときに前記化学洗浄を中止するステップと、
を備えている膜の化学洗浄を制御する方法。 - pH及び/又は前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
洗浄の経過時間を測定するステップと、
時間に対するpHの変化率(dpH/dt)及び/又は時間に対する膜抵抗の変化率(dR/dt)を計算するステップと、
dpH/dt及び/又はdR/dtがあらかじめ決められた値に達したときに前記化学洗浄を中止するステップと、
を備えている膜の化学洗浄を制御する方法。 - 前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
洗浄の経過時間を測定するステップと、
時間に対する膜抵抗の変化率(dR/dt)を計算するステップと、
(dR/dt)を使用して、洗浄の完了までの時間を計算するステップと、
を備えている濾過システムの化学洗浄を制御する方法。 - 洗浄の間に存在する化学洗浄剤の量を増加するステップと、
前記洗浄の少なくとも一部に対する膜の膜抵抗を測定するステップと、
膜抵抗があらかじめ決められた値に達したときに、化学洗浄剤の増加を中止するステップと、
を備えている膜の化学洗浄を制御する方法。 - 洗浄剤の量は、一定量で増加されることを特徴とする請求項4に記載の方法。
- 前記予め決められた値は、ほぼ膜抵抗の安定状態における値であることを特徴とする請求項4又は5に記載の方法。
- 前記膜は、精密濾過膜又は限外濾過膜であることを特徴とする請求項1、2、又は4に記載の方法。
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Publication number | Publication date |
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ATE549076T1 (de) | 2012-03-15 |
EP1835985A4 (en) | 2009-07-08 |
CN101623599B (zh) | 2013-01-16 |
EP1835985B1 (en) | 2012-03-14 |
US20080203016A1 (en) | 2008-08-28 |
JP5410942B2 (ja) | 2014-02-05 |
JP4763718B2 (ja) | 2011-08-31 |
CN101098746A (zh) | 2008-01-02 |
JP2008525165A (ja) | 2008-07-17 |
US20130334136A1 (en) | 2013-12-19 |
SG150505A1 (en) | 2009-03-30 |
CN100548451C (zh) | 2009-10-14 |
US8496828B2 (en) | 2013-07-30 |
EP2394731A1 (en) | 2011-12-14 |
NZ555856A (en) | 2010-03-26 |
CA2591408C (en) | 2015-07-21 |
CN101623599A (zh) | 2010-01-13 |
AU2005318930A1 (en) | 2006-06-29 |
NZ583228A (en) | 2012-05-25 |
WO2006066319A1 (en) | 2006-06-29 |
EP1835985A1 (en) | 2007-09-26 |
CA2591408A1 (en) | 2006-06-29 |
SG2014010789A (en) | 2014-06-27 |
AU2005318930B2 (en) | 2010-06-03 |
US20110114557A2 (en) | 2011-05-19 |
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