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Filtering method and device using honeycomb ceramic membrane

A technology of honeycomb ceramics and membrane filtration, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of lack of in-depth research and improvement of honeycomb ceramic membranes, achieve investment cost reduction, reduce membrane pollution, fill The effect of high installation area

Pending Publication Date: 2020-02-04
南京钛净流体技术有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All this is only research on membrane elements and components, lack of in-depth research and improvement on the specific application of honeycomb ceramic membranes

Method used

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  • Filtering method and device using honeycomb ceramic membrane
  • Filtering method and device using honeycomb ceramic membrane
  • Filtering method and device using honeycomb ceramic membrane

Examples

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Embodiment Construction

[0041] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples.

[0042] Such as figure 1 As shown, a honeycomb ceramic membrane filtration device includes a raw liquid tank, a feed pump, a coarse filter, a concentrated liquid return main pipe, a honeycomb ceramic membrane module, a recoil liquid tank, a dissolved air tank and a recoil gas source;

[0043] The top of the ceramic membrane module is equipped with an upper inlet and outlet and a supernatant liquid inlet, and the bottom of the ceramic membrane module is equipped with a lower inlet and outlet and a recoil inlet;

[0044] The inlets of raw liquid tank, feed pump and coarse filter are connected in turn through pipelines; the outlet of coarse filter is connected with feeding pipe, which is branched into upper feeding pipe and lower feeding pi...

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Abstract

The invention discloses a filtering method and device using a honeycomb ceramic membrane. The filtering method using the honeycomb ceramic membrane comprises the following steps of feeding a to-be-treated liquid into a honeycomb ceramic membrane assembly for filtering in a bidirectional periodically-changed feeding manner; during filtering, performing periodic back flushing, and performing matchedperiodic forward flushing with the same frequency at the same time. According to the filtering method and device, bidirectional pulsating feeding is adopted, so that turbulence caused by periodic direction conversion is fully utilized to reduce membrane pollution, and light-contaminated membrane portions at inlet and outlet ends are fully utilized to maintain relatively high membrane flux operation. Periodic gas-dissolved mixed liquid is adopted for back flushing, so that a ceramic membrane aeration head and a gas dissolving principle are fully exerted, nano-scale bubbles and liquid-mixed liquid are generated for back flushing, the back flushing effect is enhanced, a back flushing pump is not needed, and energy is saved; periodic forward flushing with the same frequency is carried out while back flushing is carried out, and liquid is adopted as a forward flushing medium, so that contaminants can be brought out of a system in time after back flushing, and flux can be recovered instantly on line.

Description

technical field [0001] The invention relates to a honeycomb ceramic membrane filtering method and a filtering device, which belong to the application field of ceramic membranes. Background technique [0002] The honeycomb ceramic membrane (PCR membrane) is the same as the multi-channel ceramic membrane. It is also sintered at high temperature with inorganic ceramic materials such as alumina, titanium oxide, zirconia and silicon oxide. It has a similar structure to the tubular multi-channel ceramic membrane. It has the chemical stability and mechanical strength of the multi-channel ceramic membrane, but because it has a much denser channel distribution than the multi-channel ceramic membrane per unit volume, it has the advantage of a higher inner membrane area per unit volume than the multi-channel ceramic membrane, namely The packing area per unit volume of the inner membrane is higher. The high filling area not only increases the processing scale of the ceramic membrane eq...

Claims

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Application Information

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IPC IPC(8): C02F1/44B01D65/02C02F103/10
CPCC02F1/44B01D65/02C02F2103/10C02F2303/14B01D2321/04B01D2321/02B01D2321/162B01D2321/164
Inventor 唐礼升王志高程晋伟
Owner 南京钛净流体技术有限公司
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