In-situ sewage and odor treatment device for sewage treatment plant

A sewage treatment plant and treatment device technology, applied in gas treatment, aerobic and anaerobic process treatment, chemical instruments and methods, etc., can solve the problems of high total nitrogen in effluent, low denitrification efficiency, insufficient carbon source of domestic sewage, etc. , to achieve the effect of reducing costs and reducing sludge production

Pending Publication Date: 2020-05-05
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, urban domestic sewage is mostly treated by traditional biological nitrification/denitrification process (A 2 /O, A/O process), while the denitrification process requires organic carbon sources as electron donors to convert NO X - -N reverts to N 2 , and the problem of low C/N in urban domestic sewage is common in my country. The carbon source in domestic sew

Method used

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  • In-situ sewage and odor treatment device for sewage treatment plant
  • In-situ sewage and odor treatment device for sewage treatment plant
  • In-situ sewage and odor treatment device for sewage treatment plant

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Through the simulation experiment of sewage and odor treatment in the sewage treatment plant in the laboratory, that is, after simulating the dissolution of the odor in the sewage treatment plant into the nitrate-containing sewage, the removal performance of sulfide, nitrate and ammonia nitrogen in the sewage was investigated. The range of sulfide concentration tested in this experiment is 60mg / L-540mg / L, the range of nitrate concentration is 10.5mg / L-94.5mg / L, and the range of ammonia nitrogen concentration is 70-80mg / L.

[0048] When the concentrations of sulfide, nitrate and ammonia nitrogen in the influent were 60mg / L, 10.5mg / L and 70.9mg / L respectively, the removal rates of sulfide, nitrate and ammonia nitrogen were 94%, 90% and 13%, respectively. As the influent matrix concentration further increased, the removal rates of sulfide, nitrate and ammonia nitrogen remained above 90%, 89% and 21%, respectively.

[0049] After several experiments, the average removal rat...

Embodiment 2

[0052] Through the simulation experiment of sewage and odor treatment in the sewage treatment plant in the laboratory, that is, after simulating the dissolution of the odor in the sewage treatment plant into the nitrate-containing sewage, the removal performance of sulfide, nitrate and ammonia nitrogen in the sewage was investigated. What this experiment tests is when the influent sulfide concentration is 60mg / L, the nitrate concentration is 10.5mg / L, and the ammonia nitrogen concentration ranges from 72-78mg / L, the long-term effect of the treatment device on sulfide, nitrate and ammonia nitrogen Remove the performance case.

[0053] When the influent sulfide concentration is low, the sulfide removal efficiency of the effluent is stable at more than 90% for many days, and the average removal rate is 94%; the nitrate removal rate is stable at more than 88% for many days, and the average removal rate At the same time, it also has a certain removal effect on ammonia nitrogen, and...

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Abstract

The invention discloses an in-situ sewage and odor treatment device for a sewage treatment plant. The in-situ sewage and odor treatment device mainly comprises an odor collection system, an odor conveying system and an odor treatment system; the odor collecting system consists of an odor collecting hood, an air pipe and a first fan; the odor conveying system consists of a pipeline and a second fan; the odor treatment system separates the anoxic tank by using a partition plate; the tank is divided into a front selection tank area and a rear anoxic tank area, the front selection tank has three different structures, odor can be dissolved by adopting a proper scheme according to different conditions, and nitrate-containing sewage and sulfur-containing and ammonia-containing odor are treated insitu by virtue of a synchronous denitrification and desulfurization and anaerobic ammonia oxidation reaction mechanism. The treatment device is simple, the manufacturing cost is low, the thought is novel, sulfide and ammonia in the municipal sewage treatment plant are used for reducing nitrate while odor of the municipal sewage treatment plant is removed, the requirement for denitrification in sewage is met, waste is treated with waste, the input amount of a carbon source and the yield of residual sludge are reduced, and good ecological benefits are achieved.

Description

technical field [0001] The invention relates to an in-situ sewage and odor treatment device of a sewage treatment plant, belonging to the technical field of waste water biological treatment. Background technique [0002] At present, urban domestic sewage is mostly treated by traditional biological nitrification / denitrification process (A 2 / O, A / O process), while the denitrification process requires organic carbon sources as electron donors to convert NO X - -N reverts to N 2 , and the problem of low C / N in urban domestic sewage generally exists in my country. The carbon source in domestic sewage is insufficient, resulting in low denitrification efficiency and high total nitrogen in the effluent, which cannot meet the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918- 2002) Level A discharge standard; after using this process, a large amount of excess sludge will be produced, and the disposal of excess sludge has gradually become a major problem. ...

Claims

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Application Information

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IPC IPC(8): C02F3/30B01D53/18
CPCB01D53/1468B01D53/18B01D2257/406C02F3/30
Inventor 蔡靖王凯权孙月
Owner ZHEJIANG GONGSHANG UNIVERSITY
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