Method for treating industrial wastewater by microbial agent

A technology of industrial wastewater and process, applied in the direction of filtration treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of secondary pollution of the environment, low ability of bacteria to treat wastewater, and wastewater that cannot meet the treatment standards. To achieve the effect of long service life, rough fabric and good mechanical bulk

Active Publication Date: 2018-12-14
防城港市丰禾曲辰农业科技有限公司
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Problems solved by technology

[0003] Chinese patent (CN201810012965.0) is a wastewater treatment device that uses a mixture of anaerobic bacteria, facultative bacteria or aerobic bacteria as a microbial water purifier to treat sewage to achieve good sewage treatment effects, but the flocculant used It is an inorganic flocculant and an organic polymer flocculant, which may cause secondary pollution to the environment
Chinese patent (CN201611182630.0) is an industrial wastewater treatment process that uses a mixed bacterial agent to treat wastewater, but because the bacteria have not been domesticated, the ability of the bacteria to treat wastewater will be low, and the discharged wastewater will not meet the treatment standards.

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  • Method for treating industrial wastewater by microbial agent

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Experimental program
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Effect test

Embodiment 1

[0028] (1) Cultivation of anaerobic bacteria and aerobic bacteria: preparation of medium: 1% o-nitrophenol β-D-galactoside, 0.5% glucose, 1% peptone, 0.6% sodium phosphate, the rest is water, adjust The pH value is 7, after 21 minutes of high-temperature sterilization at 120°C, medium A, B, and C are obtained; in the sterile room, methanogens, methanococci, and lactobacilli are inoculated into medium A at a ratio of 1:2:3, and in the absence of The bacterial chamber was inoculated with Thiobacillus thiazobacillus, Thiobacillus ferrooxidans, Acinetobacter junii, and yeast to medium B at a ratio of 1:2:4:7, with a culture temperature of 30°C and a culture time of 45 hours;

[0029](2) Strain domestication and intensive cultivation: 30% of the sludge obtained from the secondary sedimentation tank of the sewage treatment plant, 0.5% of magnesium sulfate, 0.5% of glucose, and sodium phosphate were put into the aerobic strain pool and the anaerobic strain pool respectively. 0.5%, mu...

Embodiment 2

[0036] (1) Cultivation of anaerobic bacteria and aerobic bacteria: preparation of culture medium: 1% o-nitrophenol β-D-galactoside, 1% peptone, 0.3% glucose, 0.8% sodium phosphate, the rest is water, adjusted The pH value is 7, after 23 minutes of high-temperature sterilization at 125°C, culture media A, B, and C are obtained; in the sterile room, methanogens, methanococci, and lactobacilli are inoculated into medium A at a ratio of 1:2:3. The bacterial chamber was inoculated with Thiobacillus thiooxidans, denitrifying phosphorus accumulating bacteria, and yeast to medium B at a ratio of 3:4:7, with a culture temperature of 28°C and a culture time of 35 hours;

[0037] (2) Strain domestication and intensive cultivation: 20% of the sludge obtained from the secondary sedimentation tank of the sewage treatment plant, 0.5% of magnesium sulfate, 0.5% of glucose, and sodium phosphate were put into the aerobic strain pool and the anaerobic strain pool respectively. 0.5%, multivitamin...

Embodiment 3

[0044] (1) Cultivation of anaerobic bacteria and aerobic bacteria: preparation of culture medium: 1% o-nitrophenol β-D-galactose, 1% peptone, 0.4% glucose, 0.3% sodium phosphate, the rest is water, adjust The pH value is 7.5, and after 115°C high-temperature sterilization for 25 minutes, medium A, B, and C are obtained; in the sterile room, methanogens, methanococci, and lactobacilli are inoculated into medium A at a ratio of 1:2:3. The bacterial chamber was inoculated with Thiobacillus denitrificans, Rhodocyclobacterium crimson, and yeast to medium B at a ratio of 3:4:7, with a culture temperature of 25°C and a culture time of 40 hours;

[0045] (2) Strain domestication and intensive cultivation: 28% of sludge obtained from the secondary sedimentation tank of the sewage treatment plant, 0.5% of magnesium sulfate, 0.5% of glucose, and sodium phosphate were put into the aerobic strain pool and the anaerobic strain pool respectively. 0.5%, multivitamin 1%, sodium gluconate 2%, g...

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Abstract

The invention discloses a method for treating industrial wastewater by a microbial agent. The device comprises an aerobic strain tank, an anaerobic strain tank, a grid, a regulating tank, a flocculation tank, an anaerobic reaction tank, an aerobic aeration biofilter tank and a methane recovery device. The method comprises preparation of a culture medium, cultivation of anaerobic bacteria, cultivation of aerobic bacteria, cultivation of flocculating bacteria, expansion and enhancement of a strain, domestication and cultivation, sewage filtration based on the grid, adjustment of pH in an adjustment tank, feeding into the flocculation tank, addition of flocculating bacteria, standing of the sewage in the anaerobic reaction tank for 8-10h, stirring, recovery of methane, feeding of sewage intothe aerobic aeration biofilter tank, filtration based on a three-layer special-shaped fiber nylon filter cloth, secondary filtration based on gravity, ultraviolet lamp disinfection, discharge after detection, and return of unqualified sewage into the anaerobic reaction tank. The device has good sewage treatment effects, is free of chemical reagents, prevents secondary pollution, has a low ventilatory capacity, a small stirring amount and a small sewage flow amount, has small discharge of odor and excess sludge and realizes energy saving and emission reduction.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a process for treating industrial waste water with bacterial agents. Background technique [0002] The main pollutants of industrial sewage or municipal sewage are oxygen-consuming pollutants (carbohydrates, proteins, oils, lignin and other organic substances), toxic pollutants (inorganic anions, organic pesticides, etc.), inorganic pollutants (acids, alkalis, salts, etc. ) and pathogenic contaminants. Traditional sewage treatment methods include stirring, aeration oxidation treatment, anaerobic anaerobic treatment and sedimentation steps. Oxidation treatment and anaerobic treatment are essentially the process of microbial degradation of pollutants in water, usually natural bacteria or artificially added a small amount Bacteria, depending on the type of pollutants, some chemical reagents need to be added, and the precipitation process usually adopts natural standing or adding floccu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/34
CPCC02F1/001C02F1/283C02F1/52C02F1/66C02F3/30C02F3/34C02F9/00C02F2301/08
Inventor 黄陈玉
Owner 防城港市丰禾曲辰农业科技有限公司
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