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Method and equipment for purifying recirculated cooling water or town B-grade sewage

A technology for circulating cooling water and secondary sewage, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, separation methods, etc., can solve the problems of large floor area, poor load impact resistance, and high one-time investment , achieve the effect of good purification degree, speed up and degree

Active Publication Date: 2008-09-03
华电水务(天津)有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a purification method and equipment for circulating cooling water or urban secondary sewage, so as to avoid problems such as large floor area, high one-time investment, complicated operation and management, and poor load impact resistance in the prior art. Optimization method and equipment design structure for China's national conditions

Method used

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  • Method and equipment for purifying recirculated cooling water or town B-grade sewage
  • Method and equipment for purifying recirculated cooling water or town B-grade sewage
  • Method and equipment for purifying recirculated cooling water or town B-grade sewage

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Embodiment Construction

[0063] The purification method of circulating cooling water or urban secondary sewage is characterized in that it will go through the following steps:

[0064] a. Introduce the liquid to be treated into the mixing area 1, add one or more reagents, and mix the reagents with the liquid to be treated uniformly, the multiple reagents are lime agents and one or more coagulants;

[0065] b. Perform high-speed clarification of the uniformly mixed liquid to be treated in the high-speed clarifier tank, the supernatant liquid rises at a flow rate of 10-30 m / hour, and the obtained supernatant liquid is drawn out;

[0066] c. introducing the above-mentioned supernatant into the filter area 4, and the filter area 4 is filled with filter materials.

[0067] After the liquid to be treated enters the mixing zone 12 of the mixing zone 1, the designed residence time of the liquid to be treated in the mixing zone 12 is 30-240 seconds, preferably 45-180 seconds.

[0068] The lime agent is added ...

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Abstract

The invention relates to a purification method and equipment for cool circulating water or town secondary sewage water, and is characterized in that the invention has the following steps: a quick mixing zone 1 for mixing a ready treated liquid and a mixing medicament, a flocculating reaction zone 2 for mixing and flocculating a mixed liquid with a backflow deposit substance to get a compact alum at an outlet of the zone, a depositing and concentrating zone 3 for separating a supernatant liquor and a suspension solid and for returning and draining a deposit substance, and a filtering facility zone 4 for purifying the supernatant liquor; the equipment of the invention mainly comprises the quick mixing zone, a high efficient clarification tank and a filtering zone; the invention designs the purification method and equipment for liquid and water; the water quality from the invention is stable, the cost is lower, which changes the prior purification method for liquid and water.

Description

technical field [0001] The invention relates to a purification method and equipment for circulating cooling water or urban secondary sewage, in particular to a purification method and equipment for recycling treatment of circulating cooling water in thermal power plants or advanced treatment of urban sewage. Background technique [0002] In the existing similar technology, most of the suspended sludge type mechanical agitation clarifiers (scraping mud at the bottom of the tank) or improved sludge separation and contact lime treatment clarifiers (full tank bottom) are used in series with the variable pore filter device. mud scraping), the pools are all circular, and the reaction processes such as chemical mixing, flocculation reaction, sedimentation material reflux, and solid material separation are all completed in one reactor, and the operating conditions of a single reaction process cannot be independently optimized and adjusted. The resulting flocs The compactness of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/01B01D21/06B01D21/30C02F1/52
Inventor 李永明李尚志惠兆华罗德波
Owner 华电水务(天津)有限公司
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