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Device for treating sewage by coupling continuous flow An/O dephosphorization with SBR autotrophic nitrogen removal and method for treating municipal sewage

A sewage treatment device, autotrophic denitrification technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high cost of urban sewage, poor system stability, and effluent water quality Instability and other problems, to achieve the effect of strengthening dissolved oxygen regulation, improving energy recovery rate, and saving oxygen supply

Active Publication Date: 2014-12-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention will solve the problems of high cost of urban sewage treatment, poor system stability of sewage treatment and unstable water quality after treatment in existing devices and methods for treating urban sewage, and provide a continuous flow An / O Phosphorus removal coupling SBR autotrophic denitrification sewage treatment device and method for urban sewage treatment

Method used

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  • Device for treating sewage by coupling continuous flow An/O dephosphorization with SBR autotrophic nitrogen removal and method for treating municipal sewage

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specific Embodiment approach 1

[0028] Specific embodiment 1: This embodiment is a continuous flow An / O dephosphorization coupling SBR autotrophic denitrification sewage treatment device including An / O dephosphorization and organic matter removal reactor 1, water inlet pipe 1-1, first speed-regulating stirring Device 1-2, first corundum aerator head 1-3, first gas flow meter 1-4, first air volume regulating valve 1-5, first blower 1-6, first outlet pipe 1-7, radial flow Type sedimentation tank 2, sludge return pump 2-1, excess sludge pump 2-2, second outlet pipe 2-3, sludge return pipe 2-4, excess sludge discharge pipe 2-5, collection and distribution well 3, SBR autotrophic denitrification reactor inlet pipe 4, SBR autotrophic denitrification reactor main water inlet valve 5, first SBR autotrophic denitrification reactor 6, second SBR autotrophic denitrification reactor 7, third SBR autotrophic denitrification reactor 8, the fourth SBR autotrophic denitrification reactor 9, the second speed-regulating agita...

specific Embodiment approach 2

[0042] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the floating ball of the fixed floating ball filler 11 is equipped with the biofilm filler in the high ammonia nitrogen anaerobic ammonium oxidation reactor. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0043] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: An / O phosphorus removal and organic matter removal reactor 1 is a plug-flow sewage treatment device; the first SBR autotrophic denitrification reactor 6 , the second SBR autotrophic denitrification reactor 7 , the third SBR autotrophic denitrification reactor 8 and the fourth SBR autotrophic denitrification reactor 9 are all intermittent sewage treatment devices. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a device for treating sewage by coupling continuous flow An / O dephosphorization with SBR autotrophic nitrogen removal and a method for treating municipal sewage, relating to a sewage treatment device and a sewage treatment method and aiming at solving the problems of high cost of municipal sewage treatment, poor system stability of sewage treatment and water quality instability of treated effluent water, which are generated by using the traditional device and method for treating municipal sewage. The device comprises an An / O phosphorus-organic substance removal reactor, a radical sedimentation basin, a water collection and distribution well, an SBR autotrophic nitrogen removal reactor, an on-line monitoring device, a controller, an air blower, a gas capacity regulating valve, a gas flowmeter, a water inlet pipe and a water decanter. The method comprises the following steps of 1, starting the device; 2, regulating operation parameters; 3, regulating reflux ratio parameters; and 4, sequentially treating the municipal sewage through the An / O phosphorus-organic substance removal reactor, the radical sedimentation basin and the SBR autotrophic nitrogen removal reactor. The device and method which are disclosed by the invention are suitable for the upgrading and rebuilding of a new built sewage plant and the existing sewage plant.

Description

technical field [0001] The invention relates to a sewage treatment device and a method for treating sewage. Background technique [0002] With the rapid development of my country's economy, the pollution of water environment is becoming more and more serious, and the problem of eutrophication in water bodies is particularly prominent, which has been highly valued by the state and the public. Excessive nitrogen and phosphorus elements in sewage discharged into the receiving water body is an important cause of water eutrophication. To this end, my country has promulgated more stringent sewage treatment standards. Among them, the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002) issued in 2002 stipulates that the effluent ammonia nitrogen of urban sewage plants should be less than 5 mg / L, the total nitrogen should be less than 15 mg / L, and the total phosphorus of new sewage plants should be less than 0.5 mg / L. [0003] In the traditional biolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 彭永臻杨延栋张亮张树军邵和东陈强
Owner HARBIN INST OF TECH
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