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Advanced water treatment method for micro-polluted water source

A technology for advanced treatment and micro-pollution, applied in multi-stage water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc. Insufficient supply and other issues

Inactive Publication Date: 2016-05-18
BEIJING SOUND ENVIRONMENTAL ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Advanced water treatment method for micro-polluted water source

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specific Embodiment approach

[0013] The preferred embodiment of the micro-polluted water source water advanced treatment method of the present invention is:

[0014] Including steps:

[0015] A. The effluent from the sedimentation tank enters the ozone pre-oxidation tank, and a pure titanium metal aeration head is installed in the bottom of the tank. The tank body is divided into two sections, the ratio of the tank volume of the two sections is 3:2, and the ozone concentration in the tank is 1~ 3mg / L, the residence time of the water in the pool is 10-15min, 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 upgraded to a high-efficiency biological filter, the filtering speed of the high-efficiency biological filter is 6-10m / h, and the filter material includes two filter materials, one is briquette and crushed charcoal, granular The diameter range is 1.2~1.3mm, located ...

specific Embodiment

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

[0022] (1) The inlet water of the ozone pre-oxidation tank is discharged from the flocculation sedimentation tank, and the pure titanium metal aeration head is installed in the bottom of the tank. The tank body is divided into two sections before and after, and the volume ratio of the two sections is 3:2; the ozone concentration is 1~3mg / L, the residence time is 10-15min; the macromolecular organic matter in the 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 two kinds of filter materials, one is briquette crushed charcoal, with a particle size range of 1.2-1.3mm, located in the upper layer, with a layer height of 1.8m; the other is ceramsite The filte...

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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 water supply treatment technology, in particular to an advanced treatment method for micro-polluted water source water supply. Background technique [0002] With the development of industry, the intensity and breadth of water pollution have superimposed effects, further exacerbating the contradiction between water shortage and water supply demand. The problems of water eutrophication and trace organic pollutants in water have also become more prominent. Conventional water purification processes, namely flocculation-sedimentation-sand filtration-disinfection treatment methods have been difficult to ensure water quality. [0003] At present, the most researched advanced treatment technologies include photocatalytic oxidation, membrane technology, biological activated carbon, ozone-biological activated carbon, etc. Among them, ozone-biological activated carbon is currently the most widely used deep water treatment technology, which is ...

Claims

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Application Information

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Patent Type & Authority Applications(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
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