Sewage treatment process and sewage treatment system thereof

A sewage treatment system and sewage treatment technology, applied in biological water/sewage treatment, adsorbed water/sewage treatment, water/sewage multi-stage treatment, etc. Low problems, to achieve the effect of small residual sludge, easy cleaning and high oxygen utilization rate

Pending Publication Date: 2019-03-22
福瑞莱环保科技(深圳)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a sewage treatment process and its sewage treatment system, which can solve the problems of low nitrogen and phosphorus removal rate, large dosage and large amount of residual sludge in the existing sewage treatment process

Method used

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  • Sewage treatment process and sewage treatment system thereof
  • Sewage treatment process and sewage treatment system thereof
  • Sewage treatment process and sewage treatment system thereof

Examples

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Embodiment 1

[0021] Please refer to Figure 1-6 As shown, a sewage treatment process and its sewage treatment system include a primary sedimentation / adjustment tank 3, an upflow filter 5, a pre-aeration tank 7, an IFAS-MOX reactor 11, a secondary sedimentation tank 16 and clear water connected in sequence Pool 18, one side of the primary sedimentation / adjustment pool 3 is provided with a sewage inlet tank 1, and a thick and thin grille 2 is installed in the sewage inlet tank 1, and a microporous aeration tube 9 is installed on the bottom of the pre-aeration tank 7, and the microporous One end of the aeration pipe 9 communicates with the blower fan 8 positioned outside the pre-aeration tank 7, and the IFAS-MOX reactor 11 is connected in series in multiple stages, and the water outlet of the IFAS-MOX reactor 11 is installed with a fan connected to the pre-aeration tank 7. The return pipe 10 and the clean water tank 18 are connected to the upflow filter 5 through the backwash water pipe 6, an...

Embodiment 2

[0025] This embodiment provides a sewage treatment process and a sewage treatment system thereof, which are roughly the same as the sewage treatment system and sewage treatment process in Example 1, except that multiple grid holes are installed in the sewage inlet tank 1 to gradually reduce Small thick and thin grids 2, so as to gradually remove large suspended solids and impurities of different volumes in the sewage to prevent the grid from clogging, and then pass through the primary sedimentation / adjustment tank 3, upflow filter 5, pre-aeration tank 7, IFAS -MOX reactor 11, secondary sedimentation tank 16 and clear water tank 18 are processed.

[0026] The present invention utilizes the advantages of the upflow filter, which is not easy to be blocked, has a fast filtering speed, and is easy to clean, to realize sewage pretreatment; utilizes the advantages of biofilm technology and activated sludge technology in the IFAS-MOX reactor, without increasing the sludge concentration...

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Abstract

The invention discloses a sewage treatment process and a sewage treatment system thereof. The sewage treatment system comprises a primary sedimentation/adjustment tank, an up-flow type filter, a preaeration tank, an IFAS-MOX reactor, a secondary sedimentation tank and a clean water basin, wherein a sewage inlet trough is arranged on one side of the primary sedimentation/adjustment tank; a thick-thin grid is arranged in the sewage inlet trough; a micropore aerator pipe is arranged in the preaeration tank; and one end of the micropore aerator pipe communicates with a fan located on the outer side of the preaeration tank. According to the sewage treatment process and the sewage treatment system thereof provided by the invention, by utilizing the advantages of difficulty in blocking, fast filter speed and easiness in cleaning of the up-flow type filter, sewage is pretreated; by utilizing the advantages of a biofilm technology and an activated sludge technology in the IFAS-MOX reactor, without increasing the sludge concentration, the microbial population density is improved, and the sludge sedimentation performance is improved; through the dissolved oxygen gradient change, the commensalism of nitrosobacteria and anaerobic ammonium oxidation bacteria is realized, and a sewage nitrogen and phosphorus removal effect is improved. A carbon source in sewage is effectively utilized, the oxygen utilization ratio is high, the energy consumption is low, and a nitrogen and phosphorus removal effect is good.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment process and a sewage treatment system thereof. Background technique [0002] At present, domestic sewage in my country generally has insufficient carbon sources, high ammonia nitrogen and total phosphorus content, C / N ratio imbalance, and large excess sludge. Traditional activated sludge or biofilm processes are difficult to meet the needs of nitrogen and phosphorus removal. Wastewater treatment Nitrogen and phosphorus in station tail water exceed the standard or rely on dosing to remove nitrogen and phosphorus in a large number. How to improve the nitrogen and phosphorus removal rate and reduce the amount of residual sludge under the premise of limited carbon sources is an urgent problem to be solved. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a sewage treatment process an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F1/001C02F1/28C02F3/02C02F3/12C02F2001/007C02F2101/30C02F2303/16
Inventor 张心宝王文昭叶县平
Owner 福瑞莱环保科技(深圳)股份有限公司
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