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Biological treatment system for high-salt and high-toxicity chemical wastewater and treatment method

A technology of sewage biological treatment and sewage treatment method, which is applied in the direction of aerobic and anaerobic process treatment, and can solve the problems of large area occupied by the biochemical treatment system, high cost of wastewater treatment, and large amount of sludge generated, etc. Small land area, efficient treatment, high water quality effect

Inactive Publication Date: 2018-05-18
南京霖恒彦水处理技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The present invention provides a biological sewage treatment system to solve the problems of large area occupied by the biochemical treatment system, low treatment efficiency, complicated operation, high energy consumption, and large amount of sludge generated.
Another object of the present invention is to provide a biological treatment method for sewage. In order to solve the problem that the current high-salt and high-toxic chemical sewage cannot be treated by biochemical methods, it overcomes the problem that the physical and chemical treatment of wastewater is expensive and cannot meet the standards.

Method used

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  • Biological treatment system for high-salt and high-toxicity chemical wastewater and treatment method
  • Biological treatment system for high-salt and high-toxicity chemical wastewater and treatment method
  • Biological treatment system for high-salt and high-toxicity chemical wastewater and treatment method

Examples

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Effect test

Embodiment 1

[0037] Example 1: The anaerobic aerobic enzyme group was added to the first anaerobic tank, accounting for 30% of the volume of the first anaerobic tank, and the HRT was 12 hours. The aerobic aerobic enzyme group added in the first aerobic tank accounted for 10% of the volume of the first aerobic tank, HRT is 24 hours, 30% of the sewage volume after the first aerobic tank is returned to the first anaerobic tank, and the rest is sent to the second anaerobic tank for treatment. The anaerobic aerobic enzyme group added in the two anaerobic tanks accounts for 20% of the volume of the second anaerobic tank, and the HRT is 12 hours, and then the sewage treated by the second anaerobic tank is sent to the second aerobic tank for treatment. The second aerobic tank is added with aerobic aerobic enzyme group, which accounts for 10% of the volume of the second aerobic tank. The HRT is 24 hours, and 30% of the sewage volume treated by the second aerobic tank is returned to the second anaerob...

Embodiment 2

[0038] Example 2: The anaerobic aerobic enzyme group is added to the first anaerobic tank, which accounts for 40% of the volume of the first anaerobic tank, and the HRT is 24 hours. The aerobic aerobic enzyme group added to the first aerobic tank accounts for 10% of the volume of the first aerobic tank, HRT is 36 hours, 50% of the treated sewage volume is returned to the first anaerobic tank, the rest is sent to the second anaerobic tank for treatment, and added to the second anaerobic tank The anaerobic aerobic enzyme group accounts for 30% of the volume of the second anaerobic tank, HRT is 24 hours, and then the sewage treated by the second anaerobic tank is sent to the second aerobic tank for treatment, and the second aerobic tank The added aerobic aerobic enzyme group accounts for 10% of the volume of the second aerobic tank, and the HRT is 48 hours. 50% of the sewage volume treated by the second aerobic tank is returned to the second anaerobic tank, and the rest is discharg...

Embodiment 3

[0039] Example 3: The anaerobic aerobic enzyme group added to the first anaerobic tank accounts for 40% of the volume of the first anaerobic tank, the HRT is 18 hours, and the aerobic aerobic enzyme group added to the first aerobic tank accounts for the first 15% of the aerobic tank volume, HRT is 24 hours, 40% of the treated sewage volume is returned to the first anaerobic tank, and the rest is sent to the second anaerobic tank for treatment. The aerobic enzyme group accounts for 20% of the volume of the second anaerobic tank, and the HRT is 18 hours. Then the sewage treated by the second anaerobic tank is sent to the second aerobic tank for treatment, and the second aerobic tank is added The aerobic aerobic enzyme group accounts for 10% of the volume of the second aerobic tank, and the HRT is 48 hours. 40% of the sewage volume treated by the second aerobic tank is returned to the second anaerobic tank, and the rest is discharged.

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Abstract

The invention discloses a biological sewage treatment system and a sewage treatment method. The biological sewage treatment system comprises a plurality of anaerobic pools and a plurality of aerobic pools, wherein the anaerobic pools are filled with anaerobic high density microbial flora; the aerobic pools are filled with aerobic high density microbial flora. With adoption of the treatment methodadopting the biological sewage treatment system, high-salt and high-toxicity chemical wastewater can be treated efficiently, and sewage with COD (chemical oxygen demand) concentration being 20000 mg / Lcan be directly treated. The whole system is efficient, simple to run and convenient to operate and occupies a small area, effluent quality is high, and no sludge is produced.

Description

Technical field [0001] The invention relates to a sewage treatment system and a treatment method, in particular to a biological sewage treatment system and a treatment method. Background technique [0002] The treatment of high-salt and high-toxic chemical wastewater is a difficult point in the field of sewage treatment. This type of sewage has the characteristics of high organic content, high salt content, and high pollutant toxicity. The current treatment methods include chemical methods, advanced oxidation methods, membrane separation methods, ion exchange methods and biochemical methods. These methods have their own characteristics. Among them, chemical methods and advanced oxidation methods belong to chemical methods. A large amount of chemical reagents are used in the treatment process, and a large amount of sludge is generated, which is costly. [0003] Compared with chemical methods, membrane separation methods, and ion exchange methods, biological methods have the advant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/30
Inventor 乔向利
Owner 南京霖恒彦水处理技术有限公司
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