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Sewage treatment method and system

A sewage treatment method and technology of sewage treatment system, applied in water/sewage treatment, biological water/sewage treatment, water/sewage treatment equipment, etc., can solve complex activated sludge treatment problems, difficult biodegradation, and organic matter removal rate low problems, to maintain the degradation effect, reduce the difficulty and processing costs, and reduce the investment in land acquisition costs

Pending Publication Date: 2017-02-15
华电水务工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will discharge a large amount of activated sludge, which brings a lot of complicated activated sludge treatment problems
Due to the activity of activated sludge, it is difficult to biodegrade, the removal rate of organic matter is very low, the cost is very expensive, and it will cause secondary pollution; while the traditional sewage treatment plant has several significant defects: (1) It occupies a large area and is Unsightly--large cement buildings with concentrated production capacity
(2) Big smell - most of them are exposed, and the sludge treatment and pretreatment facilities are scattered and arranged

Method used

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  • Sewage treatment method and system

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Effect test

Embodiment 1

[0033] Embodiment 1 of the present invention: a kind of sewage treatment method, comprises the following steps:

[0034] S01: Pretreatment of sewage, passing the sewage through a primary pretreatment system to remove floating and suspended solids;

[0035] S02: Pass the sewage treated in step S01 into the secondary reaction system, and pass through the anoxic section and the aerobic section in turn, so that the average residence time of the sewage in the secondary reaction system is 8 to 14 hours. Emergent plants and artificial fillers are laid in the oxygen section, so that the microorganisms attached to the surface of the emergent plants and artificial fillers can degrade the main pollutants in the sewage, and the growth of the emergent plants can absorb nutrients such as nitrogen and phosphorus in the sewage , to strengthen the pollutant removal effect; by setting up a sun shed above the reaction pool, to ensure the normal operation of the sewage treatment system and plants...

Embodiment 2

[0038] Embodiment 2 of the present invention: a kind of sewage treatment method, comprises the following steps:

[0039] S01: Pretreatment of sewage, passing the sewage through a primary pretreatment system to remove floating and suspended solids;

[0040] S02: Pass the sewage treated in step S01 into the secondary reaction system, and pass through the anoxic section and the aerobic section in turn, so that the average residence time of the sewage in the secondary reaction system is 8 to 14 hours. The oxygen section is laid with emergent plants and artificial fillers, so that the main pollutants in the sewage can be degraded by microorganisms attached to the surface of the emergent plants and artificial fillers, and nutrients such as nitrogen and phosphorus in the sewage can be absorbed by the growth of the emergent plants themselves. Enhance the effect of pollutant removal. By setting up a sun shed above the reaction tank, the normal operation of the sewage treatment system ...

Embodiment 3

[0043] Embodiment 3 of the present invention: a sewage treatment system, comprising a pretreatment device 1, a biochemical reaction device 2, a deep disinfection device 3 and a sludge treatment device 14, the pretreatment device 1 is connected with the biochemical reaction device 2, and the biochemical reaction device 2 Respectively connected with sludge treatment device 14 and deep disinfection device 3, biochemical reaction device 2 includes anoxic reaction tank 4, aerobic reaction tank 5, coagulation tank 19, flocculation tank 17, secondary sedimentation tank 13, filter tank 15, exposure tank Gas system 18, the anoxic reaction tank 4 is connected with the adjacent aerobic reaction tank 5, the anoxic reaction tank 4 is connected with the pretreatment device 1 through the water inlet pipe 6, and the aerobic reaction tank 5 is connected with the coagulation tank successively through the water delivery pipe 7 19. The flocculation tank 17 is connected, the flocculation tank 17 is...

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Abstract

The invention discloses a sewage treatment method. The sewage treatment method comprises the following steps: S01, pre-treating sewage: enabling the sewage to pass through a first-grade pre-treatment system to remove floating matters and suspension matters; S02, introducing the sewage treated by the step S01 into a second-grade reaction system, and enabling the sewage to pass an anaerobic section and an aerobic section in sequence; degrading organic matters in the sewage and removing main pollutants in the sewage through utilizing microorganisms attached on surfaces of emergent aquatic plants and artificial fillers; S03, introducing the sewage treated by the step S02 into a third-grade advanced treatment system, and carrying out flocculation, precipitation, filtration and disinfection deep treatment on the sewage to reach emission or recycling standards. The invention further discloses a sewage treatment system. By adopting the method and the system, provided by the invention, the occupied area of a sewage treatment device can be reduced, the odorous pollution of a sewage treatment plant is reduced; the yield of sludge can also be reduced and the sludge treatment and disposal difficulty is reduced; particularly, the method and the system can meet the conditions in low-temprature regions.

Description

technical field [0001] The invention relates to a sewage treatment method and system, belonging to the field of sewage treatment. Background technique [0002] At present, the anaerobic-anoxic-aerobic treatment method, also known as the activated sludge method, is widely used in domestic and foreign urban domestic sewage and industrial organic sewage treatment. This method will discharge a large amount of activated sludge, which brings a lot of complicated activated sludge treatment problems. Due to the activity of activated sludge, it is difficult to biodegrade, the removal rate of organic matter is very low, the cost is very expensive, and it will cause secondary pollution; while the traditional sewage treatment plant has several significant defects: (1) It occupies a large area and is Unsightly - large cement buildings with concentrated production capacity. (2) Strong smell - most of them are exposed, and the sludge treatment and pretreatment facilities are scattered. ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/5281C02F1/001C02F2101/30C02F2101/16C02F2101/105C02F3/34C02F3/32C02F3/30C02F2301/046C02F2303/04C02F2303/02C02F2301/08C02F2201/009Y02W10/37
Inventor 潘旗付岩峰陈北洋王正平陈鹏宇秦树蓬郗皓
Owner 华电水务工程有限公司
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