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Device and method for deep aeration in integrated oxidation ditch

The technology of an aeration device and aeration method is applied in chemical instruments and methods, aerobic and anaerobic process treatment, water/sludge/sewage treatment, etc., and can solve the problem of high operating cost of activated sludge aerators, aeration Difficulty in maintaining, repairing and replacing the inflator, evacuation, etc.

Pending Publication Date: 2016-02-24
SOUTH CHINA UNIV OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The sludge aeration technology is mainly used in the sewage treatment technology in the integrated oxidation ditch. It has made quite a few breakthroughs so far, but in the actual operation process, there are still some specific problems that plague the industry, such as aeration energy consumption High, maintenance and replacement of the aerator is difficult, the activated sludge in the ditch needs to be discharged when the aerator is replaced, the activated sludge needs to be re-cultivated after the maintenance and repair of the aerator, and the operating cost of the aerator is high.

Method used

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  • Device and method for deep aeration in integrated oxidation ditch
  • Device and method for deep aeration in integrated oxidation ditch
  • Device and method for deep aeration in integrated oxidation ditch

Examples

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Effect test

Embodiment 1

[0038] Such as figure 1 and figure 2 As shown, an integrated oxidation ditch mid-deep aeration device includes an integrated oxidation ditch 1, several mid-deep aerators 2, and underwater propellers 3;

[0039] An anaerobic reaction pool, an anoxic reaction pool, an aerobic reaction pool 4, and a sedimentation pool 11 are sequentially arranged in the integrated oxidation ditch body 1 along the sewage flow direction;

[0040] The middle-deep aerator 2 adopts a microporous aerator, which is horizontally installed at 1.5 meters away from the bottom of the aerobic reaction tank 4; 6 connection; the electric valve 7 is connected to the mid-deep layer aerator, and the electric valve 7 is connected to the automatic control system 8.

[0041] The underwater propeller 3 is vertically installed in the aerobic reaction tank 4, and the depth matches the mid-deep aerator 2; the cable of the underwater propeller 3 is connected to the power supply through a guide rod.

[0042] The workin...

Embodiment 2

[0045] Such as image 3 Shown, a deep aeration method in an integrated oxidation ditch, comprising steps:

[0046] After S1 sewage enters the integrated oxidation ditch body 1, it first flows into the anaerobic reaction tank 9, and is mixed into the anaerobic reaction tank to form an activated sludge mixture and undergo dephosphorization treatment;

[0047] S2 The activated sludge after the dephosphorization treatment is mixed and flows into the liquid anoxic reaction tank 10 for denitrification treatment;

[0048] S3 The activated sludge mixed solution after the above-mentioned dephosphorization and denitrification treatment enters the aerobic reaction tank 4;

[0049] The aeration fan 6 described in S4 sends the air into the middle-deep aerator 2 through the aeration air supply pipe 5, and enters the activated sludge mixed solution in the aerobic reaction tank 4 in the form of microporous air bubbles;

[0050] Under the action of the underwater propeller 3, the microporous...

Embodiment 3

[0056] Compared with Embodiment 1, this embodiment has a plurality of aerobic reaction tanks 4 connected in series, and a plurality of middle-deep aerators 2 are arranged in each aerobic reaction tank 4 along the sewage flow direction,

[0057] The integrated oxidation ditch body 1 of this embodiment is provided with functional areas including an aerobic reaction pool 4, such as anaerobic reaction pools, anoxic reaction pools, sedimentation tanks, etc., and sewage enters the integrated oxidation ditch body 1 After that, it flows into each functional area in turn, and is mixed into the activated sludge mixture in each functional area for treatment; the activated sludge mixture first enters the anaerobic reaction tank, and the activated sludge is mixed under the action of anaerobic bacteria. dephosphorization treatment; the dephosphorized activated sludge mixed solution flows into the anoxic reaction tank, under the action of anoxic bacteria, the activated sludge mixed solution i...

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Abstract

The invention discloses a device for deep aeration in an integrated oxidation ditch. The device comprises an integrated oxidation ditch body, a plurality of medium-deep aerators and an underwater propeller, wherein an anaerobic reaction tank, an anoxic reaction tank, an aerobic reaction tank and a sedimentation tank are sequentially arranged in the integrated oxidation ditch body in the sewage flowing direction; the medium-deep aerators are horizontally mounted at 1.3-1.7 m away from the bottom of the aerobic reaction tank; the medium-deep aerators are connected with an aeration blower by aeration air supply pipelines; the underwater propeller is vertically mounted in the aerobic reaction tank; the cable of the underwater propeller is connected with a power supply by a guide rod. The invention further provides a method for medium-deep aeration in the integrated oxidation ditch. The aeration time in the wastewater treatment process is prolonged, the flow patterns and the hybrid reaction states in the reaction tanks can be controlled more effectively, and energy consumption caused by aeration and flow pushing is greatly reduced; great convenience is provided for maintenance and replacement of underwater equipment, the service water depth is increased, and the building occupied area is reduced.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a deep aeration device and method in an integrated oxidation ditch. Background technique [0002] The sludge aeration technology is mainly used in the sewage treatment technology in the integrated oxidation ditch. It has made quite a few breakthroughs so far, but in the actual operation process, there are still some specific problems that plague the industry, such as aeration energy consumption High, maintenance and replacement of the aerator is difficult, the activated sludge in the ditch needs to be discharged when the aerator is replaced, the activated sludge needs to be re-cultivated after the maintenance and repair of the aerator, and the operating cost of the aerator is high. Contents of the invention [0003] In order to solve the above problems, the present invention provides a kind of deep aeration device in an integrated oxidation ditch on the one hand, and its technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/301
Inventor 陈峰陈丹周少奇高洪振
Owner SOUTH CHINA UNIV OF TECH
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