Method for treating domestic sewage through anaerobic-contact oxidation bio-membrane reactor and treatment device

A technology of biofilm reactor and contact oxidation, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Meet the requirements and other issues, achieve strong adaptability and operation stability, strengthen the efficiency of nitrogen and phosphorus removal, and strong impact load resistance

Active Publication Date: 2016-02-17
GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the applicability of the existing equipment and the technology adopted is relatively large, the process setting is generally relatively simple, and the final treatment effect on sewage is not ideal, especially in the removal of nitrogen and phosphorus, it is difficult to meet the requirements, and there is no good response to water inflow. Ability to fluctuate in water quality

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  • Method for treating domestic sewage through anaerobic-contact oxidation bio-membrane reactor and treatment device
  • Method for treating domestic sewage through anaerobic-contact oxidation bio-membrane reactor and treatment device

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The method of the present invention is used to treat domestic sewage in a town. The raw sewage water quality: pH: 7.2, CODcr: 280mg / L, BOD5: 150mg / L, SS: 58mg / L, NH 4 + -N: 28mg / L, TP: 5.5mg / L.

[0039] Start the high-efficiency nitrogen and phosphorus removal mode of the internal circulation system:

[0040] 1) The collected township sewage is adjusted and stored in the high-level storage tank and pre-sedimented, forming a 3m water pressure difference with the reactor in the subsequent step 2).

[0041] 2) Control the pre-precipitated sewage in step 1) to enter the anaerobic-contact oxidation biofilm reactor through gravity flow. Sewage first enters the anaerobic reaction zone of the reactor. The anaerobic reaction zone is equipped with anaerobic biological packing for the attachment and growth of anaerobic microorganisms. The filling rate of the anaerobic biological packing in the anaerobic reaction zone is 80%, and the HRT is 6 hours. The anaerobic reaction zone The dissol...

Embodiment 2

[0048] Using the method of the present invention to treat domestic sewage in a certain township, the quality of sewage raw water: COD cr :160mg / L, BOD 5 :100mg / L, NH 4 + -N: 16mg / L, TP: 3mg / L.

[0049] It adopts ultra-low energy consumption operation mode, that is, does not start the internal circulation system.

[0050] 1) The collected township sewage is adjusted and stored in the high-level storage tank and pre-sedimented, forming a 1m water pressure difference with the reactor in the subsequent step 2).

[0051] 2) Control the pre-precipitated sewage in step 1) to enter the anaerobic-contact oxidation biofilm reactor through gravity flow. Sewage first enters the anaerobic reaction zone of the reactor. Anaerobic biological packing is installed in the anaerobic reaction zone for the attachment and growth of anaerobic microorganisms. The filling rate of anaerobic biological packing in the anaerobic reaction zone is 50%, HRT is 4 hours, and the anaerobic reaction zone The dissolved ...

Embodiment 3

[0056] The method of the present invention is used to treat domestic sewage from a certain urban sewage treatment plant. The raw water quality of the sewage: pH: 7.1, CODcr: 350mg / L, BOD 5 :190mg / L, SS: 70mg / L, NH 4 + -N: 35mg / L, TP: 5mg / L.

[0057] Start the high-efficiency nitrogen and phosphorus removal mode of the internal circulation system:

[0058] 1) The collected township sewage is adjusted and stored in the high-level storage tank and pre-sedimented, forming a 2m water pressure difference with the reactor in the subsequent step 2).

[0059] 2) Control the pre-precipitated sewage in step 1) to enter the anaerobic-contact oxidation biofilm reactor through gravity flow. Sewage first enters the anaerobic reaction zone of the reactor. Anaerobic biological fillers are installed in the anaerobic reaction zone for the attachment and growth of anaerobic microorganisms. The filling rate of anaerobic biological fillers in the anaerobic reaction zone is 60%. The HRT is 5 hours. The ana...

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Abstract

The invention discloses a method for treating domestic sewage through an anaerobic-contact oxidation bio-membrane reactor. The method comprises treatment steps as follows: 1), collected town sewage is subjected to water regulation and storage and pre-sedimentation in a high regulation and storage tank; 2), the sewage self-flows into an anaerobic reaction area under the action of gravity, and anaerobic biological packing is arranged in the anaerobic reaction area; 3), the sewage upwards flows into an aerobic reaction area under the action of water pressure, a rotating biological disc is arranged in the aerobic reaction area, the sewage entering the aerobic reaction area after anaerobic treatment has the contact reaction with a biological membrane, and the pollutant removing function with higher efficiency is realized; 4), the sewage is introduced into an efficient sedimentation area and has the hybrid reaction through addition of a coagulant, after a mixed liquid is subjected to mud-water separation, a liquid supernatant is discharged up to the standard, and residual sludge is pumped out. When the method is adopted to treat the domestic sewage, the conventional index of effluent quality meets first-level A discharge standard of the pollutant discharge standard of urban sewage treatment plant (GB18918-2002), and the requirement for efficient stable nitrogen and phosphorus removal of wastewater is met.

Description

Technical field [0001] The invention relates to a process method for treating domestic sewage, in particular to a method and a processing device for treating domestic sewage using an anaerobic-contact oxidation biofilm reactor. Background technique [0002] The water environment of small towns has gradually shown a trend of serious pollution under the condition of lack of attention for a long time. Affected by economic or other factors, it is difficult for many small towns in my country to treat domestic wastewater. A large amount of domestic sewage is directly discharged into rivers and lakes and other water bodies, causing great pollution to the environment. [0003] Urban domestic sewage has the characteristics of scattered discharge, small sewage volume, large fluctuations in water quality, a certain amount of nitrogen, phosphorus and other organic matter due to the use of chemical fertilizers and pesticides, and strong biodegradability. Integrated wastewater treatment equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/10C02F101/16
Inventor 陆立海农斌宋海农周永信杨崎峰黄洪波洪雷曾添文覃茜陈永利
Owner GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
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