SBR water treatment apparatus for enhancing nitrogen and phosphorus removal, and method thereof

Abstract

The invention discloses an SBR treatment apparatus for enhancing nitrogen and phosphorus removal, and a method thereof. The apparatus comprises a sewage inlet device (3), an SBR reaction tank, an overflow device and a water outlet device (4) along a water flow direction; and the SBR reaction tank comprises a pre-reaction tank (1) and a main reaction tank (2). The treatment method comprises the following steps: (1) water inlet aeration of sewage in the pre-reaction tank; (2) prolongation of the aeration of the sewage in the main reaction tank; (3) standing precipitation of the sewage in the main reaction tank; and (4) decanting and discharging of a supernatant obtained after the precipitation. The main body device of the device has only one sequencing batch reactor, and has no secondary settling tank, sludge return system, regulating tank or primary settling tank, so the device has the advantages of compact arrangement, small occupied area and low cost; and the method adopting static precipitation has the advantages of good water outlet effect, alternative proceeding of an anaerobic/anoxic process and an aerobic process, short sludge age, high activity, and very good nitrogen and phosphorus removal effect.

Description

technical field [0001] The invention belongs to the field of sewage treatment by activated sludge biochemical method, and in particular relates to an SBR water treatment device and method for strengthening denitrification and dephosphorization. Background technique [0002] The Ministry of Environmental Protection announced the "2012 China Environmental Status Bulletin": more than 30% of rivers and more than 50% of groundwater are not up to standard. The Ministry of Water Resources once evaluated the quality of water resources in more than 700 rivers across the country, with a length of about 100,000 kilometers. The results were: 46.5% of the river lengths were polluted, and the water quality only reached Class IV or V; 10.6% of the river lengths were seriously polluted , the water quality exceeds the fifth category, and the water body has lost its use value; more than 90% of the urban waters are seriously polluted. Water pollution is developing from east to west, from trib...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing SBR water treatment process, there will still be incomplete nitrification, unreasonable use of carbon sources, and poor nitrogen and phosphorus removal.

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