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Apparatus and method for treating city sewage by coupling inner carbon source denitrification and anaerobic ammonium oxidation

An anaerobic ammonia oxidation and urban sewage technology, applied in the field of urban sewage treatment, can solve the problems of difficult to achieve stable discharge of effluent and increase of total nitrogen in effluent, avoid over-aeration phenomenon, improve removal rate, and facilitate stability running effect

Active Publication Date: 2015-03-11
BEIJING DRAINAGE GRP CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The additional nitrate generated may lead to an increase in total nitrogen in the effluent. In an environment with strict requirements on effluent quality, it will be difficult to achieve stable and up-to-standard discharge of effluent with pure anaerobic ammonium oxidation technology.

Method used

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  • Apparatus and method for treating city sewage by coupling inner carbon source denitrification and anaerobic ammonium oxidation
  • Apparatus and method for treating city sewage by coupling inner carbon source denitrification and anaerobic ammonium oxidation

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Embodiment 2

[0021] Embodiment 2: A device for treating urban sewage with internal carbon source denitrification coupled with anaerobic ammonium oxidation, the vent pipe of the urban sewage raw water tank is provided with a self-control valve, the speed-regulating agitator, water inlet pump, blower, and sludge pump , Supernatant discharge pipes are all equipped with self-control switches, the self-control valves, self-control switches, drain valves, sludge discharge valves, gas volume regulating valves, and gas flow meters are all online self-control components; There are online sludge concentration meter, online dissolved oxygen concentration meter, online phosphate concentration meter and online nitrate concentration meter; online dissolved oxygen concentration meter and online ammonia nitrogen concentration meter are arranged in the SBR denitrification reactor; the above-mentioned automatic control components And on-line sludge concentration meter, on-line dissolved oxygen concentration ...

Embodiment 3

[0022] Embodiment 3: The method of urban sewage treatment using the device of internal carbon source denitrification coupling anaerobic ammonium oxidation treatment of urban sewage, the test adopts the effluent of the primary sedimentation tank of a certain urban sewage treatment plant as raw water, and the specific water quality is as follows: COD concentration is 160- 350mg / L; NH 4 + -N concentration is 32.46-55mg / L, NO 2 - -N≤0.25mg / L, NO 3 - -N≤1mg / L. test system such as figure 1 As shown, each reactor is made of plexiglass, and the effective volume of the SBR phosphorus removal reactor and the SBR nitrogen removal reactor is 120L.

[0023] The specific operation method steps are as follows:

[0024] 1) Sludge inoculation: 120L of SBR dephosphorization reactor, 100L of return sludge from the secondary settling tank of urban sewage treatment plant, and the measured sludge concentration in the reactor was 4.8g / L; SBR denitrification reactor was inoculated with urban s...

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Abstract

The invention discloses an apparatus and a method for treating city sewage by coupling inner carbon source denitrification and anaerobic ammonium oxidation. Two SBR reactors are arranged on the apparatus, wherein a SBR phosphate removing reactor is used for removing an organic matter in sewage and synthesizing the inner carbon source, a SBR nitrogen removal reactor uses a short distance denitrification-anaerobic ammoxidation technology to remove most ammonia nitrogen in sewage, by adding residual sludge in the SBR phosphate removing reactor, total nitrogen removal rate of a system can be increased. The apparatus operation method comprises the following steps: 1)inoculating sludge; 2)starting the SBR phosphate removing reactor; 3)starting the SBR nitrogen removal reactor; and 4)operating the system in a stable mode. The apparatus and method are suitable for treating city sewage with low carbon nitrogen ratio; the system can be controlled in a flexible mode, and total nitrogen removal efficiency is high.

Description

technical field [0001] The invention discloses a high-efficiency biological treatment method for treating urban sewage based on an internal carbon source denitrification coupling anaerobic ammonium oxidation technology, belonging to the field of sewage biochemical treatment. The invention is suitable for the treatment of urban sewage with low carbon-to-nitrogen ratio; the system is flexible in control and the removal efficiency of total nitrogen is high. Background technique [0002] The construction and operation of urban sewage treatment plants is an important way to solve the problem of water pollution. Due to the limitation of environmental carrying capacity and the demand of ecological civilization construction, the effluent water quality indicators of urban sewage treatment plants are becoming more and more stringent, especially in sensitive ecological environments with heavy pollution levels, strict restrictions are imposed on COD and ammonia nitrogen in sewage . In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F3/121C02F3/1263C02F3/30C02F3/305C02F2101/105C02F2101/16C02F2101/163C02F2301/08
Inventor 张亮张树军杨岸明韩晓宇常江甘一萍蒋勇
Owner BEIJING DRAINAGE GRP CO LTD
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