CN1674974A - 充气方法 - Google Patents

充气方法 Download PDF

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CN1674974A
CN1674974A CNA038195976A CN03819597A CN1674974A CN 1674974 A CN1674974 A CN 1674974A CN A038195976 A CNA038195976 A CN A038195976A CN 03819597 A CN03819597 A CN 03819597A CN 1674974 A CN1674974 A CN 1674974A
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CN100560190C (zh
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H·A·拉扎雷德斯
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Siemens Water Technologies Holding Corp
Siemens Industry Inc
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US Filter Wastewater Group Inc
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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
    • B01D63/026—Wafer type modules or flat-surface type modules
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/087—Regeneration of the filter using gas bubbles, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/26—Specific gas distributors or gas intakes
    • 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
    • B01D2321/185—Aeration

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Physical Water Treatments (AREA)

Abstract

一种方法和过滤组件(5)，用于在垂直设置的多孔空心膜(6)阵列内提供气泡，以便当阵列浸入一种液体中时，通过在阵列垂直轴线的横向上将气泡送入(10)到阵列中，来清洗上述膜(6)的外表面。在一种优选形式中，利用一个套筒(11)至少沿着阵列长度的一部分包围阵列(6)，使气泡保持在所述阵列内。

Description

充气方法
技术领域
本发明涉及薄膜渗透系统，更具体地说，涉及一种改良的反洗方法和设备。
发明背景
薄膜渗透系统的应用正快速增长。这些系统的成功与应用各种有效和高效的膜清洗方法有很大关系。常用的物理清洗方法包括利用液体渗透或一种气体反洗(反洗、反冲洗)，和膜用在液体中取气泡形式的一种气体洗涤或冲洗。这种第二类型方法的一些例子在Ishida等人申请的美国专利No.5,192,456，Cote等人中请的美国专利No.5,248,424，Henshaw等人申请的美国专利No.5,639,373，Henshaw等人申请的美国专利No.5,783,083和我们的PCT申请WO 98/28066和WO 00/18498中已有说明。
这些现有技术系统利用各种技术来将气泡加入薄膜阵列中，以便产生有效和高效的表面清洗。现已发现，有效的清洗是通过将气泡以一种均匀的方式加入阵列中，并使气泡尽可能多地保持在阵列内，以便产生膜表面的高效清洗来达到目的。
发明概述
本发明的一个目的是提供一种改良的方法和设备，用于将气体加入一个薄膜阵列中，所述改良的方法和设备克服了或至少改善了现有技术中的一个或多个缺点，或者至少提供一种有用的替代方案。
按照第一方面，本发明提供一种方法，所述方法在一种垂直设置的多孔空心薄膜阵列内提供气泡，以便当上述阵列浸入一种液体中时清洗上述膜的外表面，该方法包括在上述阵列垂直轴线的横向上将气泡送入上述阵列的步骤。
优选的是，上述方法包括利用一个套筒至少沿着阵列长度的一部分包围上述阵列，将上述气泡保持在上述阵列内的步骤。
按照另一方面，本发明提供一种薄膜渗透组件，所述薄膜渗透组件包括多个垂直设置的多孔空心膜，所述多孔空心膜在使用时适合于浸入一种液体中，供气装置适合于在上述垂直轴线的横向上将气泡送入上述阵列中。
优先的是，上述组件还包括一个套筒，所述套筒至少沿着阵列长度的一部分包围阵列，用于将气泡保持在阵列内。优选的是，套筒沿着阵列长度的约17％或大于17％延伸。
优选的是，上述多孔空心膜包括若干空心纤维膜。优先的是，纤维膜形成为一种一般是圆筒形的膜束。更优先的是，上述套筒邻近供气装置和在其上方设置。优选的是，供气装置包括一个管件，所述管件适合于绕薄膜阵列的周边延伸，管件具有多个开口，所述多个开口位于它邻近薄膜阵列的内表面上，用于将气体送入薄膜阵列。优先的是，沿着阵列或膜束的长度设置许多供气装置。优选的是，管件中的各开口都包括延伸部分，所述延伸部分取适合于伸入阵列中的管件形式。优先的是，套筒沿着上述膜的长度的主要部分延伸。
附图简介
现在参照附图，仅是当作例子，说明本发明的一个优选实施例，其中：
图1示出具有按照本发明一个实施例所述的一种供气环的一种空心纤维膜的断开的侧视图；
图2示出图1的供气环透视图；
图3示出图2的供气环局部透视图；和
图4示出对不同百分率的组件包装长度，可透性膜压(TMP)与过滤组件运行时间的关系曲线。
优选实施例说明
优选实施例涉及多孔空心纤维膜，然而，应该理解，本发明不限于这种应用，并且同等地可用于其它类似的薄膜阵列。
参见各附图，一种纤维膜组件5在图1中示出，所述纤维膜组件5包括一束空心纤维膜6，所述空心纤维膜6分别在一上面和下面的充填套筒7和8之间延伸。纤维膜6用一个筛网9支承，所述筛网9也在套筒7和8之间延伸。
供气环10在与下面充填套筒8间隔开的一个位置处绕纤维束6的圆周装配。一个管件或套筒11在供气环10上方围绕纤维束6安放，并沿着纤维束6的长度延伸。管件11可以作为一种实心管或是通过围绕纤维束6包装合适的片状材料形成。管件材料应该不透气泡，以便将气泡保持在纤维束内，但不必不透液体。在充填套筒的上方和下方的一个区域12不被管件11覆盖，以便允许加料进入纤维膜，以及通过常用方法除去从膜中反洗出的材料，以及通过供气环10将气泡送入纤维束中。
图2和3更详细地示出供气环10。环是一种环形管件15，所述环形管件15具有若干间隔开的孔或开口16，上述若干孔或开口16围绕环形管的内圆周形成，以便当环10如图1所示围绕纤维束安放时，能把气体送入纤维阵列。气体或空气可以通过在环一侧中的一个端口17供应给环10。
系统提供许多优点。空气或气体可以通过用许多供气环沿着膜束的长度在许多位置处送入膜束。这能在各膜束内更均匀的提供气体冲洗气泡。通过管件或套筒11使气泡保持在膜束内产生更有效的纤维表面冲洗。以这种方式提供冲洗气泡，与纤维集管无关，能使滤液从纤维组件两端的任一端流出，并能在反洗时从纤维组件的一端或两端反向过滤。图4示出在沿着纤维束增加套筒或包装长度的情况下TMP增加方面的减少。
还应该理解，在不脱离上述本发明的精神或范围的情况下，本发明的另一些实施例和例证是可能的。

Claims (13)

1.一种在垂直设置的多孔空心薄膜阵列内提供气泡的方法，用于当上述阵列浸入液体中时，清洗上述膜的外表面，上述方法包括在上述阵列垂直轴线的横向上将气泡送入上述阵列的步骤。
2.按照权利要求1所述的在垂直设置的多孔空心薄膜阵列内提供气泡的方法，其特征在于，包括利用一个套筒至少沿着上述阵列长度的一部分包围上述阵列，将上述气泡保持在上述阵列内的步骤。
3.一种薄膜渗透组件，包括多个垂直设置的多孔空心膜和一种供气装置，上述垂直设置的多孔空心膜用于在使用时浸在一种液体中，上述供气装置用于在上述阵列垂直轴线的横向上将气泡送入上述阵列。
4.按照权利要求3所述的薄膜渗透组件，其特征在于，上述组件还包括一个套筒，所述套筒至少沿着组件长度的一部分包围上述阵列，用于将上述气泡保持在阵列内。
5.按照权利要求4所述的薄膜渗透组件，其特征在于，套筒沿着阵列长度的约17％或17％以上延伸。
6.按照权利要求4所述的薄膜渗透组件，其特征在于，套筒沿着上述各膜长度的主要部分延伸。
7.按照权利要求4-6其中之一所述的薄膜渗透组件，其特征在于，上述套筒邻近上述供气装置或在其上方设置。
8.按照权利要求3-7其中之一所述的薄膜渗透组件，其特征在于，上述小孔空心膜包括空心纤维膜。
9.按照权利要求8所述的薄膜渗透组件，其特征在于，各纤维膜形成为一种一般是圆筒形膜束。
10.按照权利要求3-9其中之一所述的薄膜渗透组件，其特征在于，供气装置包括一个管件，所述管件绕薄膜阵列的周边延伸，管件具有多个开口，所述多个开口设置在管件邻近薄膜阵列的内表面上，用于将气体送入薄膜阵列。
11.按照权利要求10所述的薄膜渗透组件，其特征在于，管件中的各开口包括延伸部分，所述延伸部分成形为可伸入阵列中的管形。
12.按照权利要求3-11其中之一所述的薄膜渗透组件，其特征在于，沿着阵列或膜束长度设置多个供气装置。
13.一种薄膜渗透组件，基本上如本文参照附图中所示的本发明实施例其中之一所述。
CNB038195976A 2002-08-21 2003-08-21 充气方法 Expired - Fee Related CN100560190C (zh)

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AU2002950934A AU2002950934A0 (en) 2002-08-21 2002-08-21 Aeration method
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KR (1) KR101018945B1 (zh)
CN (1) CN100560190C (zh)
AT (1) ATE547162T1 (zh)
AU (1) AU2002950934A0 (zh)
CA (1) CA2493315C (zh)
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MY (1) MY142740A (zh)
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ATE547162T1 (de) 2012-03-15
US7361274B2 (en) 2008-04-22
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EP1534410A1 (en) 2005-06-01

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