Device and method for combination of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation

A technology of coupling nitrification and phosphorus removal and anammox, which is applied in the field of short-range denitrification and phosphorus removal coupled with anammox devices, can solve the problems of high energy consumption, low treatment efficiency, secondary pollution, etc., and save carbon sources. , The effect of solving low efficiency and saving oxygen demand

Active Publication Date: 2016-02-24
BEIJING UNIV OF TECH
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[0005] The invention provides a device and method for short-range denitrification phosphorus removal coupled with anaerobic ammoniu

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  • Device and method for combination of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation
  • Device and method for combination of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation

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[0020] to combine figure 1 , 2 Embodiments of the present invention are described in detail

[0021] 1) Raw water passes through A 2 SBR inlet pump (2) into A 2 In the SBR reactor (5), after the water inflow is completed, the agitator (3) is turned on to carry out anaerobic phosphorus release and internal carbon source reaction, the water filling ratio is 0.7, the reaction time is 1.5h, and the DO≤0.02mg / L is controlled , the sludge age is 9 days, after the anaerobic reaction is completed, the water is drained, the drainage ratio is 0.7, and the supernatant rich in ammonia nitrogen enters the intermediate water tank (8), and most of the COD is removed at this stage.

[0022] 2) The N-SBR reactor (11) pumps the water in the intermediate water tank (8) into its reactor through the N-SBR water inlet pump (9). After the water inlet is completed, turn on the aeration pump (10) and pass the DO probe ( 13) Control DO at 0.5-0.7 mg / L, and monitor the "ammonia valley" point on the ...

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Abstract

The invention discloses a device and method for combination of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation and belongs to the technical field of municipal sewage treatment. The device mainly comprises an anaerobic/anoxic reactor (A2SBR) and a short-cut nitrification reactor (N-SBR). The method comprises that raw water is fed into the A2SBR reactor, PAO decomposes polyphosphate and glycogen under the anaerobic conditions, provides energy for absorbing external carbon in sewage and transforming the external carbon into PHA stored in vivo, and releases phosphorus, the liquid is stood and discharged, the supernatant rich in ammonia nitrogen is fed into the N-SBR reactor, based on pH and DO real-time control strategy, short-cut nitrification is kept, after the short-cut nitrification, the nitrification liquid is returned into the A2SBR reactor and undergoes short-cut denitrification phosphorus removal and anaerobic ammonia oxidation reactions in an anoxic zone, and after the reactions, the product water satisfying the standard is discharged. The device and method have advantages of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation, save energy and a carbon source and realize low C/N ratio domestic sewage deep denitrification.

Description

technical field [0001] The invention relates to a device and method for short-range denitrification and phosphorus removal coupled with anaerobic ammonium oxidation, which belongs to the technical field of sewage biological treatment and is applicable to the treatment fields of urban municipal sewage, dispersed rural domestic sewage, and industrial waste water rich in ammonia nitrogen. Background technique [0002] The mechanism of anammox is that under anaerobic conditions, anammox bacteria use nitrite nitrogen and ammonia nitrogen as substrates to decompose them into nitrogen and nitrate nitrogen, thereby realizing the removal of nitrogen from water. Purpose. Compared with the traditional nitrification-denitrification denitrification technology, the whole-process autotrophic denitrification technology centered on anammox has obvious advantages: anammox bacteria are chemoautotrophic bacteria, which use inorganic carbon as a carbon source, Therefore, 100% of the external ca...

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Application Information

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IPC IPC(8): C02F3/28C02F9/14
CPCC02F3/282C02F9/00
Inventor 王淑莹王梅香赵伟华吕冬梅程军彭永臻
Owner BEIJING UNIV OF TECH
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