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System and method for improving denitrification of MSBR process

A denitrification and process technology, which is applied in the system field of improved MSBR process denitrification, can solve the problems of affecting effluent water quality and poor denitrification effect, so as to improve nitrification reaction efficiency and organic matter removal efficiency, increase hydraulic retention time, increase The effect of microbial biomass

Pending Publication Date: 2020-12-08
JIANGXI THERMAL POWER CONSTR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual operation of the MSBR process, there are still cases where the denitrification effect is not good, which seriously affects the quality of the effluent water.

Method used

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  • System and method for improving denitrification of MSBR process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The method that the system for improving MSBR process denitrification provided by the present invention carries out denitrification is:

[0031] The sewage enters the anaerobic zone 3 through the water inlet pipe, and at the same time, the sludge lift pump lifts the sludge in the pre-anoxic zone 1 to the anaerobic zone 3, and the effluent from the anaerobic zone 3 enters the anoxic zone I zone 4, and the anoxic zone I zone 4 effluent Enter the anoxic zone II zone 5, and the effluent from the anoxic zone II zone 5 enters the aerobic zone 1 zone 6 and the aerobic zone II zone 7 respectively through the outlet, and the nitrifying liquid in the aerobic zone 1 zone 6 and the aerobic zone II zone 7 flows back through the nitrifying liquid return pipe To anoxic zone I zone 4, the effluent from aerobic zone I zone 6 enters SBBR I zone 8, the effluent from aerobic zone II zone 7 enters SBBR II zone 9, and the remaining sludge from SBBR I zone 8 and SBBR II zone 9 flows back to pr...

Embodiment 2

[0034] The method that the system for improving MSBR process denitrification provided by the present invention carries out denitrification is:

[0035]The sewage enters the anaerobic zone 3 through the water inlet pipe, and at the same time, the sludge lift pump lifts the sludge in the pre-anoxic zone 1 to the anaerobic zone 3, and the effluent from the anaerobic zone 3 enters the anoxic zone I zone 4, and the anoxic zone I zone 4 effluent Enter the anoxic zone II zone 5, and the effluent from the anoxic zone II zone 5 enters the aerobic zone 1 zone 6 and the aerobic zone II zone 7 respectively through the outlet, and the nitrifying liquid in the aerobic zone 1 zone 6 and the aerobic zone II zone 7 flows back through the nitrifying liquid return pipe To anoxic zone I zone 4, the effluent from aerobic zone I zone 6 enters SBBR I zone 8, the effluent from aerobic zone II zone 7 enters SBBR II zone 9, and the remaining sludge from SBBR I zone 8 and SBBR II zone 9 flows back to pre...

Embodiment 3

[0038] The method that the system for improving MSBR process denitrification provided by the present invention carries out denitrification is:

[0039] The sewage enters the anaerobic zone 3 through the water inlet pipe, and at the same time, the sludge lift pump lifts the sludge in the pre-anoxic zone 1 to the anaerobic zone 3, and the effluent from the anaerobic zone 3 enters the anoxic zone I zone 4, and the anoxic zone I zone 4 effluent Enter the anoxic zone II zone 5, and the effluent from the anoxic zone II zone 5 enters the aerobic zone 1 zone 6 and the aerobic zone II zone 7 respectively through the outlet, and the nitrifying liquid in the aerobic zone 1 zone 6 and the aerobic zone II zone 7 flows back through the nitrifying liquid return pipe To anoxic zone I zone 4, the effluent from aerobic zone I zone 6 enters SBBR I zone 8, the effluent from aerobic zone II zone 7 enters SBBR II zone 9, and the remaining sludge from SBBR I zone 8 and SBBR II zone 9 flows back to pr...

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Abstract

The invention provides a system and a method for improving denitrification of an MSBR process. The system comprises a pre-anoxic zone, a sludge concentration zone, an anaerobic zone, an anoxic zone I,an anoxic zone II, an aerobic zone I, an aerobic zone II, an SBBR zone I and an SBBR zone II which are communicated in sequence, sewage enters the anaerobic zone through a water inlet pipe, meanwhile, a sludge lifting pump lifts sludge in a pre-anoxic zone to the anaerobic zone, effluent of the anaerobic zone sequentially enters the anoxic zone I and the anoxic zone II, and effluent of the anoxiczone II respectively enters the aerobic zone I and the aerobic zone II through water passing openings; nitrification liquid in the aerobic zone I and the aerobic zone II flows back to the anoxic zoneI through a nitrification liquid return pipe, effluent of the aerobic zone 1 and the aerobic zone II enters the SBBR zone I and the SBBR zone II respectively, residual sludge in the SBBR zone I and the SBBR zone II flows back to the pre-anoxic zone, and sludge in the pre-anoxic zone enters the sludge concentration zone after being precipitated; supernatant in the sludge concentration area overflows to the aerobic area I and the aerobic area II.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a system and method for improving nitrogen removal in MSBR process. Background technique [0002] With the increasingly prominent problems of water environmental pollution and the continuous improvement of sewage discharge standards, new sewage treatment processes with the advantages of better de-function, small footprint, and simple operation and management have gradually become the focus of research and development and application in this field. In the early 1980s, American researchers based on the characteristics of the sequencing batch reaction and combined with the traditional activated sludge method developed a new process for continuous influent and effluent sewage treatment named the improved sequencing batch reactor (MSBR). Not only does the process eliminate the need for intermittent flow, it also eliminates the need for additional connecting tub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/301
Inventor 周鑫刘青高凯吴浩宇
Owner JIANGXI THERMAL POWER CONSTR CORP
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