Quick start method for anaerobic ammonia oxidation bioreactor for urban sewage

A technology of anaerobic ammonium oxidation and bioreactor, which is applied in the direction of anaerobic digestion and treatment, can solve the problems of high energy consumption and material consumption, difficulty in start-up, etc., and achieve the effect of reducing cost, shortening start-up period, alleviating and solving the water crisis

Active Publication Date: 2011-06-15
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high energy consumption and material consumption of the existing urban sewage biological denitrification process and the difficulty in starting the anaerobic ammonium oxidation process in urban sewage treatment, and to provide a rapid and low-consumption biological denitrification process for urban sewage start method

Method used

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Embodiment

[0023] The test is based on the effluent of domestic sewage in a certain community after secondary treatment of anaerobic / aerobic biological phosphorus removal. The specific water quality is as follows: COD=50~60mg / L, BOD 5 ≤15mg / L, SS≤30mg / L, NH 4 + -N=55~85mg / L, NO 2 - -N≤0.25mg / L, NO 3 - -N≤1.5mg / L, TP≤1mg / L, pH=7.0~8.5.

[0024] The effluent quality of the anaerobic ammonia oxidation biological filter is as follows: COD5 4 + -N<5mg / L, the removal rate is over 95%; TN≤15mg / L, the removal rate is over 90%; TP≤0.5mg / L; PH=7.0~8.5.

[0025] The specific treatment is as follows:

[0026] 1) Build a biological filter

[0027] Using plexiglass as the material, it is processed into a filter column with a diameter of 20 cm and a height of 3 meters. The bottom layer of the filter column is paved with pebbles with a height of 20cm and a particle size of 1-2cm as a supporting layer, and 150cm of volcanic rock with a particle size of 6-8mm is added as a filler in the main reac...

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Abstract

Disclosed is a quick startup method of an urban sewage anaerobic ammonium oxidation bioreactor, which belongs to the fields of urban sewage disposal and resource utilization. The method aims to solve the problems of high energy and material consumption, and difficult startup of the anaerobic ammonium oxidation process applied to the urban sewage denitrogenation treatment of the current urban sewage biological denitrogenation method. The method comprises: adopting a biomembrane filter chamber system under normal temperature, directly inoculating anaerobic ammonium oxidation bacteria, making the biomembrane filter chamber system adapt to the acclimation and amplification environment of anaerobic ammonium oxidation bacteria through adjusting the equipment operation parameters of the reactor,and rapidly realizing the successful startup of the urban sewage anaerobic ammonium oxidation biological autotrophic denitrogenation reactor. The method applies a new discovery in science of quick startup of the reactor implementing a simple process of anaerobic ammonium oxidation biological autotrophic denitrogenation to the high-efficiency and low-consumption denitrogenation treatment of urban domestic sewage for the first time, and has the advantages of short startup period of the reactor, stable system operation, excellent effects of sewage disposal and low cost.

Description

technical field [0001] The invention belongs to the field of urban sewage treatment and recycling. Specifically, it relates to a method specially used for rapid start-up of an anaerobic ammonium oxidation biological autooxygen denitrification reactor of urban sewage under normal temperature conditions. Background technique [0002] The traditional nitrification / denitrification biological denitrification process consumes a lot of energy in the nitrification stage. If the proliferation of nitrifying bacteria in the nitrification process is not considered, the oxidation of 1g of ammonia nitrogen (NH 4 + -N) is nitrate nitrogen (NO 3 - -N) will consume 4.57gO 2 , 7.14g alkalinity (as CaCO 3 In the denitrification stage, the demand for carbon source is high, and 1gNO can be reduced 3 - -N requires 2.86 g of biodegradable COD as a hydrogen donor. At present, the C / N of urban domestic sewage is low, and the biggest problem faced by biological denitrification treatment is th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
Inventor 李冬王俊安吴迪曾辉平张杰
Owner BEIJING UNIV OF TECH
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