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Dynamic membrane filtering device and operation method thereof

A filtration device and dynamic membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of low flux in stable operation and reduced sewage purification efficiency.

Inactive Publication Date: 2017-09-19
TIANJIN BISHUIYUAN MEMBRANE MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the stable operating flux of the dynamic membrane in the prior art is low, which reduces the sewage purification efficiency

Method used

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  • Dynamic membrane filtering device and operation method thereof
  • Dynamic membrane filtering device and operation method thereof
  • Dynamic membrane filtering device and operation method thereof

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Embodiment Construction

[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear ", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specif...

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Abstract

The invention provides a dynamic membrane filtering device and an operation method thereof and relates to the technical field of sewage treatment. The dynamic membrane filtering device comprises a supporting net, filler, a casing and a water outlet pipe, wherein the supporting net is arranged in the casing, and the inside of the casing is divided into a water inlet cavity and a water producing cavity by the supporting net; the filler is arranged on the upper surface of the supporting net; the water outlet pipe is communicated with the water producing cavity; the filler is an incompressible material and is in a particle shape. In a process that sludge mixed liquid passes through the supporting net and the filler, sludge floc is compacter by compression under action of seepage pressure. As the filler is the incompressible material, the filler has a supporting framework effect, most seepage pressure action can be offset, and the phenomenon that a filter cake layer is compressed is relieved; thus, through holes for water to pass are guaranteed and reserved, operation flux is improved, and the sewage purifying efficiency is improved. In addition, the filler can quicken an initial process that the supporting net intercepts the sludge floc to form the filter cake layer, and film formation time is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a dynamic membrane filtration device and an operating method thereof. Background technique [0002] Dynamic membrane technology is mainly used for the treatment of domestic wastewater and industrial wastewater. The process of its formation is that the surface of the coarse-pore support material continuously intercepts the filter medium, so that the effective filter layer is gradually attached to the mature process. [0003] During operation, a layer of filter cake is first formed on the surface of the membrane, and the role of the membrane medium is replaced by the filter cake layer to treat sewage. When the resistance of the filter cake layer reaches a certain value, the running flux of water decreases, and backwashing is required at this time; the compacted filter cake layer is washed clean to re-form the filter cake layer and continue to filter the sewage. [0004] H...

Claims

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Application Information

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IPC IPC(8): B01D69/14B01D65/02C02F1/44
CPCB01D69/144B01D65/02B01D2321/02B01D2321/18B01D2321/24C02F1/44
Inventor 陈亦力王洪涛王丽李天玉肖宏康李锁定张沙刘云腾于春江刘洋马志刚卢国靖
Owner TIANJIN BISHUIYUAN MEMBRANE MATERIAL CO LTD
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