AOA coupled anaerobic ammonia oxidation deep nitrogen and phosphorus removal process

Abstract

The invention discloses an AOA coupled anaerobic ammonia oxidation deep nitrogen and phosphorus removal process, which comprises an anaerobic zone for internal carbon source storage and phosphate release, an aerobic zone for aerobic excessive phosphorus uptake and short-cut nitrification-anaerobic ammonia oxidation, and an anoxic zone for internal carbon source short-cut denitrification-anaerobic ammonia oxidation, wherein an active biological filler is added into the aerobic zone and the anoxic zone to enrich main functional bacteria, the anaerobic zone has long hydraulic retention time and can store an internal carbon source, the anoxic zone is located at the rear end of the aerobic zone and does not need nitrification liquid backflow, and an aeration zone is added at the rear end of the anoxic zone to improve sludge settleability. The AOA coupled anaerobic ammonia oxidation deep nitrogen and phosphorus removal process solves the problems of insufficient carbon source and incapability of synchronously and deeply removing nitrogen and phosphorus in the nitrogen and phosphorus removal process, reduces the loss of the carbon source, improves the utilization rate of the carbon source, reduces the operation energy consumption of a sewage treatment system, and bring a better application prospect to deep nitrogen and phosphorus removal of urban sewage.

Description

technical field [0001] The invention relates to the field of sewage biological treatment, in particular to an AOA coupled anaerobic ammonium oxidation deep nitrogen and phosphorus removal process. Background technique [0002] AOA coupling anaerobic ammonium oxidation deep nitrogen and phosphorus removal process is a supporting method for deep nitrogen and phosphorus removal of sewage. With the continuous improvement of industrialization and urbanization, the problem of eutrophication of water body is becoming more and more serious, making water resources more difficult. Nitrogen and phosphorus are the main factors causing water eutrophication. Therefore, municipal sewage needs to be effectively treated to remove nitrogen, phosphorus and organic matter in the sewage before discharging to natural water bodies. Existing sewage detoxification There are various techniques for nitrogen and phosphorus removal, but the municipal sewage in my country is often relatively low in carbon ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an AOA-coupled anaerobic ammonium oxidation deep nitrogen and phosphorus removal process, which solves the problem of insufficient carbon source and inability to simultaneously remove nitrogen and phosphorus in the process of nitrogen and phosphorus removal from existing domestic sewage The problem is to reduce the loss of carbon sources in raw water, improve the utilization rate of carbon sources, greatly reduce the energy consumption of sewage treatment systems, and realize the deep denitrification of urban sewage, which can effectively solve the problems in the background technology

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