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Aerobic sludge culture domestication method for treating degradation-resistant organic chemical wastewater

A technology for organic wastewater and difficult biodegradation, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult biodegradation, low biodegradability, and low B/C and other problems, to achieve the effect of short cultivation and acclimation period, fast sludge settlement, and reduced dosing

Inactive Publication Date: 2020-09-29
南京华创环境技术研究院有限公司
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Problems solved by technology

[0005] Refractory organic wastewater generally has low B / C, low biodegradability, and high chroma. Many organic substances in wastewater are macromolecules, long-chain structures, or refractory groups such as benzene rings, which are difficult to be biodegraded. General biological wastewater treatment technology is difficult to deal with

Method used

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Examples

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Embodiment 1

[0022] Implementation example 1: a kind of activated sludge cultivation and domestication method for the biological treatment of refractory organic wastewater, the operation steps are as follows:

[0023] 1) The volume of the culture pool used is 100m 3 Add 20 tons of waste water (20% to 30% of the designed treatment concentration), biogas waste residue, and wheat straw (crushed to about 5mm fragments) and stir, mix evenly and put it into the cultivation tank. The mass ratio of biogas waste residue:wheat straw:waste water About 3:1:2, control the temperature at 30-40°C, and carry out anaerobic fermentation for 2-3 weeks after sealing;

[0024] 2) After the anaerobic fermentation in the culture tank is completed, use low-concentration lime water or 0.1% NaOH solution to adjust the pH to 6-8, add about 10 tons of activated sludge from domestic sewage treatment plants, mix well and seal, then anaerobic fermentation About 2 weeks until flocculent hyphae are produced on the surfac...

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Abstract

The invention discloses an aerobic sludge culture domestication method for treating degradation-resistant organic chemical wastewater, and belongs to the field of wastewater treatment. The method comprises the following steps: crushing wheat straws, adding wastewater and biogas waste residues after crushing, uniformly stirring and mixing, and fermenting; adding activated sludge of a domestic sewage treatment plant after fermentation, uniformly mixing, sealing, carrying out anaerobic fermentation until flocculent hyphae are generated on the surface, removing floaters and inorganic precipitates,introducing into a biochemical pool, adding nutrient substances, and culturing to obtain an activated sludge mixed solution containing a large amount of active microorganisms; and finally performingdomestication. The method disclosed by the invention is easy to operate, capable of reducing the addition of nutrient substances in the early stage and reducing the culture cost, capable of carrying out resource utilization on the biogas waste residues and the wheat straws, relatively short in culture and domestication period, easy to operate, quick in sedimentation of cultured and domesticated sludge and high in pollutant degradation efficiency.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an aerobic sludge cultivation and domestication method for refractory organic chemical wastewater treatment. Background technique [0002] In recent years, the establishment of the Ministry of Ecology and Environment, the convening of the National Environmental Protection Conference and the launch of environmental supervision work have reflected the government's determination to do a good job in the work of ecological and environmental protection in the new era. In environmental protection work, the discharge of waste water is an important part of it. of an item. According to environmental statistics in 2014, the total discharge of industrial wastewater nationwide was 20,534.3 million tons, the total discharge of COD was 22.95 million tons, and the total discharge of ammonia nitrogen was 2.39 million tons. etc.) accounted for a large proportion of them. Organic chemical waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F101/30
CPCC02F3/12C02F2101/30Y02W10/10
Inventor 李杰王赟范俊梁英张鹏
Owner 南京华创环境技术研究院有限公司
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