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Device and method for deep denitrification of sewage based on autotrophic and heterotrophic coupling of sulfur cycle

A deep denitrification and sulfur cycle technology, applied in biological treatment adjustment methods, separation methods, water/sewage treatment, etc., can solve problems such as high concentration, large consumption of organic carbon sources, waste of chemical agents, etc., and improve the removal effect , reduce the dosage, reduce the effect of the process

Active Publication Date: 2021-08-10
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0002] According to the "China Environmental Statistical Bulletin", the discharge of ammonia nitrogen from industrial sources is 9.4% of the total discharge. The industrial sewage produced by nitrogen fertilizer, pharmaceuticals, coking enterprises and other industries has high concentration of nitrogen pollutants and low C / N. The denitrification process needs to consume a large amount of organic carbon sources, resulting in high operating costs for sewage treatment, increasing the cost of sewage treatment plants and corporate sewage treatment, and causing a huge waste of chemicals

Method used

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  • Device and method for deep denitrification of sewage based on autotrophic and heterotrophic coupling of sulfur cycle

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Embodiment

[0040] Such as figure 1 As shown, the embodiment of the present invention provides a deep denitrification device for sewage based on the coupling of autotrophic and heterotrophic sulfur cycles, including an anaerobic methanogenesis reaction tank 1, a nitrification and denitrification reactor 2, and a sulfur recovery reaction tank connected in sequence 3;

[0041] The bottom of the anaerobic methanogenic reaction tank 1 is provided with a water distribution pipe 1.2, and the water distribution pipe 1.2 is connected with a duckbill valve 1.3, and the water inlet pipe 1.1 of the anaerobic methanogenic reaction tank 1 is communicated with the water distribution pipe 1.2;

[0042] The nitrification and denitrification reactor 2 is successively provided with anoxic denitrification zone 2.1, aerobic nitrification zone 2.2 and sedimentation tank 2.3, and the outlet pipe 1.8 of the anaerobic methanogenesis reaction tank 1 is connected with the anoxic denitrification zone 2.1 connect; ...

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Abstract

The invention provides an autotrophic and heterotrophic coupled sewage deep denitrification device and method based on sulfur cycle, belonging to the technical field of sewage treatment. The unit for generating hydrogen sulfide in the sewage treatment process of the present invention uses lye to absorb hydrogen sulfide; lifts the absorbed sulfide to an anoxic pool, and the anoxic pool removes nitrate nitrogen through sulfur autotrophic denitrification; anaerobic methane production The remaining organic matter undergoes heterotrophic denitrification in the anoxic tank, and the anoxic unit performs the combination of sulfur autotrophic denitrification and organic matter heterotrophic denitrification. The biogas desulfurization process system only absorbs hydrogen sulfide, and the absorbed sulfide is utilized in the anoxic system to realize the recovery and utilization of sulfur element.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device and method for deep deamination of sewage based on autotrophic and heterotrophic coupling of sulfur cycle. Background technique [0002] According to the "China Environmental Statistical Bulletin", the discharge of ammonia nitrogen from industrial sources is 9.4% of the total discharge. The industrial sewage produced by nitrogen fertilizer, pharmaceuticals, coking enterprises and other industries has high concentration of nitrogen pollutants and low C / N. The denitrification process needs to consume a large amount of organic carbon sources, resulting in high operating costs for sewage treatment, increasing the cost of sewage treatment plants and enterprises, and causing a huge waste of chemicals. [0003] However, general industrial wastewater contains a certain concentration of sulfur, and a large amount of hydrogen sulfide will be produced during anaerobic trea...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30B01D53/18C02F101/16C02F101/30
CPCC02F3/302B01D53/18B01D53/1468C02F2001/007C02F2101/16C02F2203/006C02F2101/30B01D2252/10B01D53/52B01D2251/604B01D53/77B01D2258/05C02F9/00C02F3/305C02F3/2866C02F1/66C02F2209/06C02F2209/40C02F3/006C02F2209/08C02F2209/22C02F2209/14C02F2209/38C02F2209/02C02F2209/10C02F2209/006C02F1/00C02F3/1278C02F3/2893C02F2101/101C02F2201/005C02F2209/265C02F2301/046
Inventor 姚宏杨岸明田盛
Owner BEIJING JIAOTONG UNIV
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