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A2N-SBR (anaerobic/anoxic/nitrification-sequencing batch reactor) improved deep denitrification and dephosphorization technology of sewage

A deep denitrification and improved technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problem of low nitrogen and phosphorus removal efficiency, influent C Low /N, high energy consumption and other issues, to achieve the effect of saving COD consumption, reducing sludge production rate and saving floor space

Inactive Publication Date: 2017-06-13
YANGZHOU UNIV
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Problems solved by technology

[0004] For traditional post-denitrification phosphorus removal A 2 The N process has problems such as low influent C / N, low nitrogen and phosphorus removal efficiency, and high energy consumption. The present invention proposes an A 2 N-SBR improved sewage deep nitrogen and phosphorus removal process to solve the traditional A 2 N process effluent NH 4 + -N too high problem

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  • A2N-SBR (anaerobic/anoxic/nitrification-sequencing batch reactor) improved deep denitrification and dephosphorization technology of sewage

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Embodiment Construction

[0021] One, the device of technology of the present invention:

[0022] Such as figure 1 As shown, among them, 1- raw water tank; 2- water inlet pump; 3- A 2 / O-SBR reactor; 4-stirring device; 5-blower; 6-N-SBR reactor; 7-polypropylene suspension packing; 8,9-flow meter; 10-intermediate lift pump ;11-intermediate water tank ;12-Intermediate lift pump ;13-intermediate water tank ;14-NH 4 + Sensor; 15-NO 3 - Sensor; 16-NO 2 - Sensor; 17-TP sensor; 18-DO sensor; 19-flow sensor; 20-speed sensor; 21-computer; 22-online control box.

[0023] A 2 The / O-SBR reactor 3 operates alternately through anaerobic, anoxic and aerobic operations to complete the removal of organic matter and synchronous denitrification and phosphorus removal, and is equipped with a rotational speed sensor 20, which is calculated and output by a computer 21 to adjust the rotational speed of the stirring device 4, Based on the joint control strategy of shortening the settling time and increasing t...

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Abstract

The invention discloses an A2N-SBR (anaerobic / anoxic / nitrification-sequencing batch reactor) improved deep denitrification and dephosphorization technology of sewage and belongs to the technical field of biological sewage treatment. The technology comprises the steps: performing anaerobic reaction on the domestic sewage in an A2 / O-SBR, adding nitrification liquid into the A2 / O-SBR (anaerobic / anoxic / oxic-sequencing batch reactor) for denitrification and dephosphorization reaction under an oxygen deficient condition, after transitory aerobic treatment, standing for layering, discharging supernate, putting the supernate in an N-SBR with polypropylene suspension filling for shortcut nitration reaction under an aerobic condition, then standing, and obtaining supernatant, namely the nitrification liquid. According to the technology, granule sludge is coupled with a shortcut denitrification and dephosphorization technique in the A2N-SBR; the tank capacity is reduced; the reaction time is shortened; the floor area is saved; and at the same time, economical and high-efficiency deep denitrification and dephosphorization are achieved. The technology is applicable to the treatment of the nitrogenous and phosphorous municipal domestic sewage.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment. Background technique [0002] In the 1970s and 1980s, it was discovered that phosphorus accumulating bacteria could produce NO 2 - -N is an electron acceptor to complete the phenomenon of synchronous denitrification and phosphorus uptake. [0003] A 2 The N (Anaerobic / Anoxic / Nitrification) process is a process developed based on the theory of denitrification phosphorus removal technology. It is a dual-sludge system combining biofilm method and activated sludge method. A 2 The N process separates the long and short sludge ages, which has the advantages of "one carbon, two uses", saving aeration, reducing energy consumption for reflux, low sludge yield, and separate culture of dominant bacteria. COD is used to the greatest extent for anaerobic phosphorus release to synthesize PHA. In the anoxic stage, PHA is used for simultaneous denitrification and phosphorus removal by de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/10C02F101/16
CPCC02F3/30C02F3/308C02F2101/105C02F2101/16
Inventor 张淼何成达吴军
Owner YANGZHOU UNIV
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