Vertical treatment equipment for high-concentration ammonia nitrogen wastewater

Abstract

The invention provides vertical treatment equipment for high-concentration ammonia nitrogen wastewater, belonging to the technical field of wastewater treatment. The vertical treatment equipment comprises: a vertical reaction tank; an anaerobic ammonia oxidation reaction section, a denitrification reaction section, a short-cut nitrification reaction section and a nitrification reaction section, which are sequentially arranged in the vertical reaction tank from bottom to top; a water inlet pump; and a short-cut nitrification liquid reflux pump. The anaerobic ammonia oxidation reaction section comprises a bottom uniform water distribution device arranged at the bottom of the vertical reaction tank, and an anaerobic ammonia oxidation filler arranged on the bottom uniform water distribution device and propped against the bottom uniform water distribution device; the short-cut nitrification reaction section comprises a short-cut nitrification aeration pipe arranged on the denitrification reaction section and a short-cut nitrification filler arranged on the short-cut nitrification aeration pipe; and the nitrification reaction section comprises a middle uniform water collecting device, anitrification aeration pipe and an aerobic nitrification filler which are arranged from bottom to top. According to the invention, an integrated vertical reactor is adopted, reaction units are reduced, the occupied area is also reduced, reaction steps can be shortened, and the volume of the reaction tank is reduced.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a vertical high-concentration ammonia nitrogen wastewater treatment equipment. Background technique [0002] The treatment of high-concentration ammonia-nitrogen wastewater generally adopts biological denitrification treatment. At present, the traditional biological denitrification process is biological nitrification and denitrification. The mechanism is: under aerobic conditions, nitrous bacteria convert NH 4 + Nitrification to nitrite, nitric acid bacteria nitrify nitrite to nitrate; then under anoxic conditions, denitrifying bacteria reduce the nitrate or nitrite produced by the nitrification process into nitrogen gas. The specific reaction chemical formula is as follows: [0003] Nitrification reaction: 2NH 4 + +3O 2 →2NO 2 - +4H + +2H 2 O; 2NO 2 - +O 2 →2NO 3 - [0004] Denitrification reaction: 6NO 3 - +2CH 3 OH→6NO 2 - +2CO 2 +4H 2 o [...

AI Technical Summary

Problems solved by technology

Biological denitrification is treated in a split process, resulting in many processing units and a large footprint. Sometimes a separate device for sedimentation is required, resulting in a complex structure and a large size of the water purification device.

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