Wastewater treatment process for quickly treating low-concentration pollutants
A technology for wastewater treatment and pollutants, applied in biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as high cost, low degradation rate and denitrification rate, and low treatment load , to achieve the effects of small footprint, solution to the substandard total nitrogen, and low infrastructure costs
Inactive Publication Date: 2020-02-11
东莞市台腾环保材料科技有限公司
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[0006] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a wastewater treatment process for quickly treating low-concentration pollutants, which can effectively solve the problems of low processing load, high cost, and The problem of low degradation rate and denitrification rate
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[0024] The invention discloses a wastewater treatment process for rapidly treating low-concentration pollutants, which includes the following steps:
[0025] (1) The wastewater is raised from the regulating tank 11 to the anoxic heterotrophic denitrification tank 12, and the B-PVA carrier material 13 is added in the anoxic heterotrophic denitrification tank 12, and the B-PVA carrier material 13 is loaded with microorganisms at a high density. Starch, fiber, carbohydrate suspended pollutants and soluble organic matter in the waste water are hydrolyzed into organic acids under hydrolysis and acidification, so that macromolecular organic matter is decomposed into small molecular organic matter, and insoluble organic matter is converted into soluble organic matter; in this embodiment, the The wastewater in the regulating tank 11 is lifted to the anoxic heterotrophic denitrification tank 12 through the lift pump 14 .
[0026] B-PVA carrier material 13 is a new type of microbial sol...
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Abstract
The invention discloses a wastewater treatment process for quickly treating low-concentration pollutants. The process comprises that (1) wastewater is lifted to an anoxic heterotrophic denitrificationtank from an adjusting pool, and a B-PVA carrier material is added into the anoxic heterotrophic denitrification tank; (2) the wastewater sequentially flows into a first aerobic nitrification tank, asecond aerobic nitrification tank and a third aerobic nitrification tank and is subjected to aerobic biochemical treatment, wherein a B-PVA carrier material is added into the first aerobic nitrification tank, and a spiral fiber velvet filler is used in the second aerobic nitrification tank and the third aerobic nitrification tank; and (3) the wastewater of the third aerobic nitrification tank isfed into a denitrification tank. According to the invention, by using the process and the B-PVA carrier material, the BOD5 removal rate reaches 70-98%, the ammonia nitrogen removal rate reaches more than 85%, and deep degradation is performed by combining with high-density enriched thiobacillus denitrificans autotrophic denitrification so as to completely solve the problem that the total nitrogendoes not reach the standard; and the process has characteristics of simplified process, small occupation area, low capital construction cost, operation cost saving and high automation degree.
Description
technical field [0001] The invention relates to the technology in the field of wastewater treatment, in particular to a wastewater treatment process for rapidly treating low-concentration pollutants. Background technique [0002] Small rural domestic sewage plants and black and odorous rivers have the characteristics of low organic load and high suspended solid content, and contain pathogenic bacteria and insect eggs. Direct discharge into water bodies or infiltration into groundwater will cause water environment pollution and eutrophication of lakes. At present, traditional primary treatment, biofilm, AO process, and MBR process are mostly used for this kind of wastewater, but these treatment processes have disadvantages such as low treatment load, high cost, and complicated operation, especially the shortcomings of the existing traditional AO process: [0003] (1) Since there is no independent sludge return system, sludge with unique functions cannot be cultivated, and the...
Claims
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IPC IPC(8): C02F3/30C02F3/34C02F101/16
CPCC02F3/302C02F3/34C02F2101/16C02F2203/006
Inventor 刘济忠石井裕之刘波文
Owner 东莞市台腾环保材料科技有限公司