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

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. ...

AI Technical Summary

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 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

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