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Advanced treatment method of slightly polluted water source feed water

An advanced treatment, micro-pollution technology, applied in water/sewage multi-stage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc. Pool blockage, etc.

Inactive Publication Date: 2018-07-10
BEIJING SOUND ENVIRONMENTAL ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical application, there are some problems in the ozone-biological activated carbon treatment process, especially in some hot and humid areas in the south, where the water temperature and air temperature are high, the microbial reproduction speed is fast, the supply of oxygen demand is insufficient, the degradation of organic matter is incomplete, and the filter tank is blocked. Frequent backwashing reduces the filtration efficiency of the biological activated carbon filter, increases the wear rate of activated carbon, increases the operating cost, and makes it difficult to guarantee the stability of the effluent quality

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  • Advanced treatment method of slightly polluted water source feed water

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specific Embodiment approach

[0013] The method for advanced treatment of slightly polluted water source feed water of the present invention, its preferred embodiment is:

[0014] Include steps:

[0015] A. The effluent from the sedimentation tank enters the ozone pre-oxidation tank. The bottom of the tank is laid with a pure titanium metal aeration head. The tank body is divided into two sections. 3mg / L, the residence time of water in the pool is 10-15min, and the macromolecular organic matter in the water is decomposed into small molecular organic matter through the strong oxidation of ozone;

[0016] B, the effluent of the ozone pre-oxidation tank is promoted to a high-efficiency biofilter, the filtration rate of the high-efficiency biofilter is 6 ~ 10m / h, and the filter material includes two kinds of filter materials, one is briquetting broken carbon, granular The diameter range is 1.2 ~ 1.3mm, located on the upper layer, the layer height is 1.8m, the other is ceramsite filter material, the particle s...

specific Embodiment

[0021] Such as figure 1 As shown, the steps are as follows:

[0022] (1) The water in the ozone pre-oxidation tank is discharged from the flocculation sedimentation tank, and the bottom of the tank is laid with pure titanium metal aeration head. L, the residence time is 10-15 minutes; the macromolecular organic matter in water is decomposed into small molecular organic matter through the strong oxidation of ozone.

[0023] (2) The effluent from the ozone pre-oxidation tank is upgraded to a high-efficiency biological filter. The filtration rate of the high-efficiency biological filter is 6-10m / h, and the filter material is composed of 2 kinds of filter materials, one is briquetting and broken carbon, the particle size range is 1.2-1.3mm, it is located on the upper layer, and the layer height is 1.8m; the other is ceramsite Filter material, particle size 3~6mm, layer height 0.5m, located at the bottom. The thickness of the supporting layer is 0.3m, and the perforated aeration...

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Abstract

The invention discloses an advanced water treatment method for a micro-polluted water source. Effluent from a sedimentation tank enters an ozone pre-oxidation tank, macromolecular organic matters in water are decomposed into micromolecular organic matters under strong oxidation of ozone, effluent from the ozone pre-oxidation tank is lifted to an efficient biofilter, the filtration rate of the efficient biofilter is 6-10 m / h, and filtering media comprise briquette broken carbon and ceramsite filter materials; effluent from the efficient biofilter flows to a fiber filtering media filtration tank under gravity, suspended particles are intercepted by fiber filtering media and finally enters a sludge system along with backwashing water and a precipitation process, and effluent from the fiber filtering media filtration tank enters a clear water tank, is disinfected by chlorine and pumped into an urban water supply network through a booster pump. The purified effluent enters the clear water tank and is disinfected by chlorine, so that the treated effluent meets the Standards for drinking water quality (GB5749-2006), the problems of blockage of a filtration tank, low organic matter removal rate and high operation cost of an ozone-biological activated carbon advanced treatment technology are solved, and the advanced water treatment method is suitable for advanced treatment of the micro-polluted water source, especially a micro-polluted water source in southern hot and humid areas.

Description

technical field [0001] The invention relates to a feedwater treatment technology, in particular to a method for advanced treatment of slightly polluted water source feedwater. Background technique [0002] With the development of industry, the intensity and breadth of water pollution present a superimposed effect, which further exacerbates the contradiction between the shortage of water resources and the demand for water supply. The problems of eutrophication and trace organic pollutants in water have also become more and more prominent. The conventional water purification process, that is, flocculation-sedimentation-sand filtration-disinfection treatment methods, has been difficult to guarantee water quality. [0003] At present, the advanced treatment technologies that have been studied more include photocatalytic oxidation, membrane technology, biological activated carbon, ozone-biological activated carbon, etc. Among them, ozone-biological activated carbon is currently t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/76C02F1/78C02F3/02C02F9/00
Inventor 肖国仕王凯姜安平白利云陈爱宁
Owner BEIJING SOUND ENVIRONMENTAL ENG