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High-precision cleanable security filter element and its application

A security filter and filter element technology, applied in ultrafiltration, chemical instruments and methods, semi-permeable membrane separation, etc., can solve the problems of difficult control of water quality, high filtration accuracy, and inability to clean, so as to improve the operation and replacement cycle. , the effect of reducing labor intensity and reducing maintenance costs

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the technical problems existing in the actual operation of the existing security filter element, such as the shortcomings of high filtration accuracy, easy to form deep pollution, non-cleanable, and difficult to control the water quality of the produced water, the invention provides a filter element in security filter equipment and its preparation and application methods, the filter element can not only improve various problems caused by the security filter element in the existing industrial membrane device, but also greatly improve the operation and replacement cycle of the filter element, and reduce the maintenance cost in the operation of the existing double-membrane device

Method used

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  • High-precision cleanable security filter element and its application
  • High-precision cleanable security filter element and its application

Examples

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Embodiment 1

[0053] Prepare and adopt the security filter element of the present invention:

[0054] 1) Take a microfiltration membrane with an average pore size of 1 μm and a PTFE hollow fiber membrane with a pore size distribution range of 0.5-1.5 μm as the filter material, divide it into eight parts and distribute them evenly around the support column in the membrane filament end-blocking distributor, And control the two ends of the membrane filament to exceed the two ends of the membrane filament sealing distributor by about 10mm;

[0055] 2) Connect one end of the end-blocking distributor of membrane filaments distributed in step (1) to the casting end cover 102 and then fix it upright. For the connection method, see figure 1 shown;

[0056] 3) Prepare anhydrous calcium sulfate paste according to the mass ratio of deionized water to anhydrous calcium sulfate 1.8:1, and quickly transfer the calcium sulfate paste to the capping and casting cover in step (2), the immersion height is 3m...

Embodiment 2

[0071] Prepare and adopt the security filter element of the present invention:

[0072] 1) Take the microfiltration membrane with an average pore size of 0.5 μm, and the hydrophilic modified PVC hollow fiber microfiltration membrane with a pore size distribution range of 0.1-1.0 μm as the security filter material, divide it into eight parts and evenly distribute them to the membrane silk seal Around the supporting column in the end distributor, and control the two ends of the membrane filament to exceed the two ends of the membrane filament end distributor by 5mm;

[0073] 2) Connect one end of the end-sealed distributor of membrane filaments distributed in step (1) to the casting end cover and then fix it upright. For the connection method, see figure 1 as shown in 103 in;

[0074] 3) Prepare anhydrous calcium sulfate paste according to the mass ratio of deionized water to anhydrous calcium sulfate 2.2:1.6, and quickly transfer the calcium sulfate paste to the capping and c...

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Abstract

The invention relates to preparation of high-precision filter element used for a security filter and application technology thereof, in particular to a preparation and application technology of a filter element in a security filter in front of a membrane during wastewater deep treatment and reuse. The filter element provided in the invention solves the technical problems that spray melt or wound PP filter elements currently used in industry have low precision, are easy to cause deep pollution, and cannot realize repeated use through chemical cleaning. The filter element involved in the invention can mainly be used in the security filter of a double-membrane system to perform operation and replacement in a membrane method sewage treatment field, and also can be applied in water treatment processes that have high filtration precision requirements and can have discharged water used for oilfield reinjection water and circulating water supplement. In a conventional biochemical treatment unit, the filter element can take the place of or partially substitute the sedimentation function of a secondary sedimentation tank, thus meeting stricter discharged water quality requirements.

Description

technical field [0001] The invention relates to a filter element in security filter equipment used in membrane wastewater reuse, and its preparation method and application, which belong to the membrane wastewater treatment and application field. Background technique [0002] In recent years, with the increasing shortage of fresh water resources and the strengthening of environmental protection law enforcement, technologies related to water saving and emission reduction have been further promoted and applied in practical industrial applications. Among them, the advanced sewage reuse technology - membrane separation Technology has developed rapidly under the existing technical conditions and has been applied to many fields. In a sense, membrane separation technology has become one of the technical foundations for solving current energy, resource and environmental problems and achieving sustainable development. In my country, with the introduction of membrane technology and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/18B01D63/02C02F1/44B29C70/36
Inventor 杨永强谢梓峰王玉杰奚振宇
Owner CHINA PETROLEUM & CHEM CORP
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