Device and method for continuous flow short-path nitrification/anammox combined deamox treatment of high ammonia nitrogen wastewater and domestic sewage

Abstract

The device and method for continuous-flow short-path nitrification / anammox combined with DEAMOX to treat high-ammonia nitrogen wastewater and domestic sewage belong to the field of biological treatment of sewage sludge. The device includes: high ammonia nitrogen wastewater storage tank, upflow sludge bed USB reactor, intermediate water tank, domestic sewage storage tank, sequencing batch SBR reactor, and water outlet tank. The method comprises the following steps: high-ammonia-nitrogen waste water enters an upflow sludge bed USB reactor, ammonia oxidizing bacteria and anammox bacteria convert ammonia nitrogen into nitrogen and nitrate nitrogen, and effluent and domestic sewage enter the sequencing batch SBR reaction at the same time In the tank, denitrifying bacteria and anammox bacteria convert nitrate nitrogen in effluent water and ammonia nitrogen in domestic sewage into nitrogen gas and nitrate nitrogen. The invention effectively solves the problem of excessive nitrate nitrogen in the effluent when the short-range nitrification / anammox process is used to treat wastewater with high ammonia nitrogen, and at the same time realizes efficient denitrification of domestic sewage.

Description

technical field [0001] The invention relates to a device and method for continuous-flow short-path nitrification / anammox combined with DEAMOX to treat high-ammonia nitrogen wastewater and domestic sewage, belongs to the technical field of sewage biological treatment, is suitable for deep denitrification of high-ammonia nitrogen wastewater and domestic sewage, and has the advantages of saving energy and reducing waste water. consumption characteristics. Background technique [0002] Anaerobic ammonium oxidation technology means that anammox bacteria convert ammonia nitrogen and nitrite nitrogen in water into nitrogen and a small amount of nitrate nitrogen. This technology has the advantages of no need for aeration, no need for additional carbon sources, and small sludge production. , is one of the autotrophic biological denitrification technologies with great development potential. In recent years, it has received extensive attention in the industry, and the combined denitrif...

AI Technical Summary

Problems solved by technology

The continuous-flow short-cut nitrification / ANAMMOX process can achieve continuous water inflow and continuous water outflow, which greatly increases the water inflow load compared with the sequencing batch reactor, but this process is generally proposed and applied in the form of a sequencing batch reactor, and The effluent contains some nitrate nitrogen, especially when it is used to treat high ammonia nitrogen wastewater, the nitrate nitrogen in the effluent often cannot meet the standard

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