Self-circulation autotrophic nitrogen removal bioreactor

Abstract

The invention provides a self-circulation autotrophic nitrogen removal bioreactor. A bioreactor body is in a cylindrical structure, externally sleeved with an annular backflow annular cavity and provided with a microporous aeration plate, a rotary water distributor, a gas collection hood, an anaerobic water distribution hood, a gas exhaust pipe, a three-phase separator and an anaerobic exhaust pipe sequentially from bottom to top. A backflow sieve mesh plate I, a water inlet pipe, an aerobic sludge discharging pipe, an anaerobic sludge discharging pipe, a backflow sieve mesh plate II, a wateroutlet groove and a water outlet pipe are sequentially arranged on the side wall of the bioreactor body from bottom to top. The whole bioreactor is functionally partitioned into an aerobic reaction area, an anaerobic reaction area, a sedimentation separation area and a backflow area. The self-circulation autotrophic nitrogen removal bioreactor has great nitrogen removal efficiency, is efficient and stable in operation and has advantages that 1) great sludge retaining effects and high sludge concentration are realized; 2) adverse influences on the nitrogen removal performance of the reactor inan aeration process are avoided; 3) the integral nitrogen removal performance of the reactor is improved; 4) operating cost is saved.

Description

technical field [0001] The invention relates to a biological denitrification reactor for sewage, which belongs to the field of biological treatment for denitrification of sewage, in particular to a bioreactor for self-circulation and self-supporting denitrification. Background technique [0002] With the development of my country's economy and the improvement of people's living standards, a large number of industrial pollution discharges, domestic sewage discharges, agricultural fertilizer loss, livestock and poultry breeding sewage discharges, and aquaculture sewage discharges have caused increasingly serious ammonia nitrogen pollution in water bodies, leading to serious eutrophication of water bodies , lead to a large number of deaths of aquatic organisms, causing ecological damage and huge economic losses; it can also induce infantile methemoglobinemia, and can be transformed into serious carcinogens, directly threatening human health. Research and development of efficient...

AI Technical Summary

Problems solved by technology

However, the anaerobic ammonium oxidation functional flora is easily affected by the aeration process, which limits the improvement of the overall denitrification capacity; the ecological niches of each functional flora are forced to overlap, which restricts their respective performance and cannot exert their maximum potential; additional The reflux equipment realizes alkalinity reuse balance, which increases the processing cost and energy consumption of the process; the poor settling effect leads to the loss of organisms, and the biomass is not high, etc.

The above deficiencies have restricted the energy saving, efficiency improvement and engineering application promotion of the integrated short-range nitrification-anammox bioreactor

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