Improved method of reclaimed water treatment technology for effectively prolonging service lifetime of film

A treatment process and membrane extension technology, which is applied in water/sewage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc., to reduce membrane pollution, meet water inflow requirements, and have good treatment effects Effect

Inactive Publication Date: 2008-10-01
郭玉同
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to: aim at the deficiency of the above-mentioned pretreatment method for preventing membrane fouling, provide a kind of pretreatment process that effectively uses secondary magnetic separation technology as membrane sepa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Process improvement implementation plan 1:

[0020] When more than 70% of the sewage to be treated has a particle size greater than 1 μm and a magnetic susceptibility greater than zero, the proportion of strong magnetic and magnetic substances is greater than 70%, and when the water quality of the treated water is not high, direct magnetic filtration + ultrafiltration ( microfiltration) process;

Example Embodiment

[0021] Process improvement implementation plan 2:

[0022] When more than 20% of the particle size is less than 1 μm, the proportion of strong magnetic and magnetic substances with a magnetic susceptibility greater than zero is greater than 70%, and the water quality of the treated water is not high, you can choose magnetic aggregation + magnetic filtration + ultrafiltration (micro filter) process;

Example Embodiment

[0023] Process improvement implementation plan 3:

[0024] When the proportion of ferromagnetic substances is less than 70%, the process of flocculation + magnetic aggregation + magnetic filtration + ultrafiltration (microfiltration) can be selected;

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PUM

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Abstract

The invention relates to a novel improved process for intermediate water reuse. Aiming at the shortages of traditional process in pre-processing process of film separation technique, the improved process adopts secondary magnetic separation technique and corresponding magnetic filter devices to replace traditional filter process and devices, and adds magnetic seeds and flocculant, which are taken as the pre-processing technique and devices of the film separation technique. Contaminations in wastewater pre-disposed by the improved process can be basically removed, the water quality requirement of film separation water intake is complied with, the miro-filtration, ultra-filtration, nano-filtration and pressure of reverse osmosis film are greatly lightened, the service life of the film is prolonged, and the cost of intermediate water reuse disposal is reduced.

Description

technical field [0001] The invention relates to enhanced treatment and reuse of reclaimed water and seawater desalination technology, belonging to the advanced treatment of reclaimed water reuse in the field of water treatment, specifically a combination of high-gradient two-stage magnetic separation technology, physicochemical flocculation and membrane treatment Water reuse treatment method. Background technique [0002] In water treatment, membrane separation technology has been widely used due to its high efficiency, energy saving, simplicity, small footprint and easy operation. However, the economics of membrane separation technology is largely affected by membrane fouling. Membrane fouling is caused by the deposition of various pollutants in the feed water on the surface of the membrane, which leads to a decrease in system performance (removal rate and water flux) and an increase in the pressure difference between the inlet and outlet of the module; Unscheduled shutdo...

Claims

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Application Information

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IPC IPC(8): B01D65/08C02F1/00C02F1/48C02F1/52C02F1/44
Inventor 郭玉同
Owner 郭玉同
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