Inverted short-cut nitrification-anaerobic ammonia oxidation sewage treatment device and treatment method

Abstract

The invention discloses an inverted short-cut nitrification-anaerobic ammonia oxidation sewage treatment device and treatment method. The device comprises an anaerobic moving bed bio-membrane reactorand a short-cut nitrification reactor which are connected with each other, wherein a mixing zone, a denitrification zone and an anaerobic ammonia oxidation zone which are communicated with one anotherare arranged in the anaerobic moving bed bio-membrane reactor, biological suspended fillers are respectively arranged in the three zones; discharged water of the anaerobic ammonia oxidation zone enters the short-cut nitrification reactor; and a reflux channel is arranged between a water outlet of the short-cut nitrification reactor and a water inlet of the mixing zone. According to the device andthe method, nitrate nitrogen, nitrite nitrogen and ammonia nitrogen are converted into nitrogen by utilizing gradual denitrification and anaerobic ammonia oxidation of an inflow organic carbon sourcein different areas of the anaerobic moving bed bio-membrane reactor, so that efficient denitrification is realized. Interference of an organic carbon source on population advantages of the chemical energy autotrophic flora is eliminated, stable short-cut nitrification process control can be achieved, meanwhile, it is ensured that nitrogen in discharged water is nitrate nitrogen or nitrite nitrogen through rear short-cut nitrification, and therefore high-standard emission is achieved.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater biological treatment, in particular to an inverted short-range nitrification-anammox sewage treatment device and treatment method. Background technique [0002] The intermediate products of the nitrogen cycle can have adverse effects on the environment and humans. Among them, ammonia, nitrite and nitrate are the most serious hazards in water bodies, which will lead to environmental risks such as eutrophication of water bodies, formation of black and odorous water bodies, and groundwater pollution. Among them, wastewater from livestock and poultry breeding, fermentation, chemical industry, milk / soybean products processing and other industries has major defects such as high ammonia nitrogen concentration and unbalanced carbon and nitrogen ratio, which limits the economic applicability of traditional biological denitrification technology. [0003] In an anaerobic environment, anammox b...

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Problems solved by technology

However, short-range nitrification is affected by multiple indicators such as water temperature, pH, sludge age, and dissolved oxygen, and is easily affected by external environmental fluctuations. The engineering application control system is complex and the effluent quality is unstable.

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