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High-turbidity water treater with integrated flocculation, air floating and membrane separation functions

A water treatment device and membrane separation technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the frequent start and stop of power equipment and high pipeline pressure requirements , short backwash cycle and other issues, to achieve the effect of reducing the equipment footprint, reducing production costs and improving production efficiency

Inactive Publication Date: 2002-01-23
杭州浙大凯华膜技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that it is necessary to backwash the membrane with compressed air at a pressure of 0.8 MPa, and the backwash cycle is very short. When the raw water turbidity is high, it needs to be backwashed every 20-30 minutes. This kind of equipment The pressure resistance requirements of the pipeline are very high, and the power equipment is frequently started and stopped, so the production cost is high and the service life of the membrane is short

Method used

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  • High-turbidity water treater with integrated flocculation, air floating and membrane separation functions
  • High-turbidity water treater with integrated flocculation, air floating and membrane separation functions
  • High-turbidity water treater with integrated flocculation, air floating and membrane separation functions

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Embodiment Construction

[0021] Such as figure 1 As shown, the treated high turbidity water is pumped into the pipeline mixer 2 by the pump 1, and at the same time, the flocculant S is added, and after the mixed flocculation reaction, it enters the treatment water tank 3, and the aeration device 4 is installed near the bottom of the water tank, and the aeration device 4 It is connected with the fan 9 by a pipeline, a hydrophilic hollow fiber microporous membrane module 7 is installed above the aeration device 4, and a partition 6 is installed inside the water tank. Purified water passes through the micropores on the wall of the hydrophilic hollow fiber microporous membrane 10, enters the inside of the hollow fiber microporous membrane, is sucked by the self-priming pump 5, and is discharged through the water collection pipe 11 of the membrane module. There are two structural forms of hollow fiber membrane modules, one is screen type, the hollow fiber microporous membranes 10 arranged in a screen shape...

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Abstract

The water treater can lower obviously the comprehensive pollution index of purified water and make the quality of purified water not affected by the quality of raw waste water. It needs no backflushing and has long service life of membrane and less floor area. Using it high-turbidity water is treated through combined flocculation, air floating and membrane separation. The treater has mixer and treating water tank connected via pump, and the water tank has aerator connected with a blower at the bottom hydrophilic hollow fiber microporous membrane assembly with water collecting pipe connected to a self priming pump to discharge purified water in the upper part, baffles in the peripheral and sludge scraper installed in the top. The present invention is used in treating water with suspended matter more than 50 mg / L.

Description

Technical field: [0001] The invention belongs to water treatment technical equipment, and relates to a high turbidity water treatment device integrating flocculation, air flotation and membrane separation. Background technique: [0002] The purification treatment of waterworks or industrial water generally requires processes such as flocculation, aeration, sand settling, sedimentation, and filtration. These devices are basically independent units. These facilities occupy a very large area, and the turbidity of the effluent water can only be controlled within 5NTU; when the weather changes or the season changes, the turbidity of the raw water will also change accordingly. The turbidity of the effluent also changes together, making it difficult to prepare high-quality tap water or high-quality purified water; in foreign countries, more and more water plants have now adopted membrane filtration technology to provide users with high-quality tap water. There are also many occasi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/04
Inventor 陈元胜徐又一杜宝山胡锋
Owner 杭州浙大凯华膜技术有限公司
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