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Method of treating low temperature low turbidity water by high density active mud sediment back flow

A technology for low-temperature, low-turbidity water and activated mud, applied in the field of water treatment, can solve problems such as the influence of particle concentration in water, and achieve the effects of strong shock load resistance, reduced treatment capacity, and low operating costs.

Inactive Publication Date: 2007-04-18
SHENYANG JIANZHU UNIVERSITY
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  • Abstract
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Problems solved by technology

[0006] 2. Influence of particle concentration in water

Method used

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  • Method of treating low temperature low turbidity water by high density active mud sediment back flow

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Embodiment Construction

[0022] As shown in the figure, the method of high-density active sludge reflux to treat low-temperature and low-turbidity water, the equipment used includes coagulant dosing port 2, pipeline mixer 3, coagulant aid dosing port 4, mechanical stirring and mixing Chamber 5, reaction flocculation chamber 6, perforated wall 7, inclined plate device 8, outlet channel 9, filter tank 10, high-density sludge area 12, sludge scraping device 13, excess sludge discharge port 16, activated sludge return pump 17 and so on. Its processing process is:

[0023] The water entering the water inlet 1 adds coagulant through the coagulant dosing port 2, and enters the pipeline mixer 3 together, and then adds coagulant (pre-coagulation) through the coagulant dosing port 4, and then mixes with the chemical return sludge Together into the mechanical stirring mixing chamber 5. One of the impellers is located in the central steady-flow cylinder. The function of the impeller is to mix the water flow in ...

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Abstract

The present invention relates to a method for treating low-temperature low-cloudy water by utilizing high-density active sludge refluxing process, belonging to the field of water treatment technology. Said method includes the following steps: adopting external sludge refluxing system to make the chemical active sludge be lifted into feedwater pipe of reaction tank from sludge concentrated zone and mixed with primary water, then making them be passed through mechanical stirring mixing chamber and fed into reaction flocculating chamber, then adopting high-effective oblique plate precipitation process to produce complete, uniform and high-density alumen ustums from perforated wall to oblique plate precipitation zone and effectively implement sludge concentration so as to ensure stable water quality of discharged water.

Description

technical field [0001] The invention relates to a water treatment technology, in particular to a method for treating low-temperature and low-turbidity water by refluxing high-density active sludge. Background technique [0002] One of the difficulties in water treatment is the treatment of low temperature and low turbidity water. At low temperature and low turbidity, the coagulation and sedimentation performance of turbidity is greatly reduced. At this time, in order to form relatively coarse flocs that are easy to precipitate and separate, most water plants generally adopt the method of increasing the dosage of coagulant . However, the increase in coagulant dosage is not only wasteful, but will also lead to problems such as increased sludge volume, shortened filter cycle, and increased residual coagulant, which will bring great harm to the maintenance and management of water purification facilities. Big burden. [0003] Reasons why low temperature and low turbidity water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 傅金祥陈正清
Owner SHENYANG JIANZHU UNIVERSITY
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