Inclined plate selective culture method and device for aerobic granular sludge

An aerobic granular sludge, selective cultivation technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problem of increasing the initial investment cost of the aerobic granular sludge process in the start-up time, and hindering the application of aerobic granular sludge in the start-up time , Long start-up time of aerobic granular sludge and other problems, to achieve the effect of shortening start-up time, shortening cultivation time, and compact structure

Inactive Publication Date: 2016-02-03
CHINA UNIV OF MINING & TECH
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  • Application Information

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Problems solved by technology

Excessive start-up time leads to an increase in the initial investment cost of the aerobic granular sludge process, and is not suitable for resisting some emergencies
The start-up ti...

Method used

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  • Inclined plate selective culture method and device for aerobic granular sludge
  • Inclined plate selective culture method and device for aerobic granular sludge
  • Inclined plate selective culture method and device for aerobic granular sludge

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Experimental program
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Embodiment 1

[0013] Embodiment 1: as figure 2 and image 3 As shown, the inclined plate 1 in the inclined plate selective cultivation device for aerobic granular sludge involved in the present invention can be distributed in parallel along the vertical direction of the aerobic reactor 5 to form a plurality of longitudinal inclined plate groups 4, and fixed In reactor 5, the formation of aerobic sludge particles is promoted. The present invention proposes that the area of ​​the inclined plate 1 in the unit volume of the reactor 5 is controlled at 5 ~ 30m 2 Inclined board / 1m 3 Within the range of the pool capacity, and the ratio of the sum of the projected areas of each set of inclined plates 1 on the bottom of the reactor 5 to the area of ​​the bottom of the reactor 5 should be controlled within the range of 3% to 30%. In this embodiment, the area of ​​the inclined plate 1 in the unit volume of the reactor 5 is set as 10m 2 Inclined board / 1m 3 Pool capacity, the ratio of the sum of th...

Embodiment 2

[0015] Embodiment 2: as Figure 4 As shown, the form of the inclined plate group 4 in the aerobic reactor 5 can be various, and a plurality of inclined plates 1 can be fixed in the reactor 5 through the support rods 2 in the horizontal direction. And the formation of aerobic granular sludge can play the same role. Other setting parameters are the same as embodiment 1.

[0016] In an aerobic reaction tank 5, a sloping plate selection culture device is installed according to embodiment 1 or embodiment 2, and the inoculated sludge is put into the tank so that the initial sludge concentration is within the range of 3500 ~ 4500mg / L, and the tank is passed into the well by the water inlet pipe. The sewage to be treated by the oxygen reaction tank 5 makes the sludge aggregate together while degrading the pollutants, and accelerates the formation of aerobic granular sludge.

[0017] After the aerobic reaction tank 5 was operated for 4 to 5 days, initial granular sludge with a partic...

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Abstract

The invention discloses an inclined plate selective culture method and device for aerobic granular sludge, and belongs to the field of environmental engineering wastewater treatment. According to the method, a plurality of inclined plate groups are mounted in a whole aerobic reactor or partial regions of the aerobic reactor; each inclined plate group comprises a plurality of inclined plates and a supporting rod; the corresponding inclined plates are uniformly arranged on each inclined plate group; sludge slides down or rolls down on the inclined plate, so that the possibility of sludge collision is increased, sludge aggregation is promoted, and then forming of the aerobic granular sludge is accelerated. The device is used for implementing the method, and mainly comprises the inclined plate groups and a fixing bridge, wherein each inclined plate group is formed by uniformly fixing a plurality of corresponding inclined plates on one corresponding supporting rod; the fixing bridge is used for fixing the inclined plate groups in the aerobic reactor. The method and the device have the benefits that sludge granulation can be continuously and stably promoted.

Description

technical field [0001] The invention belongs to the field of environmental engineering sewage treatment, and in particular relates to a slant plate selective cultivation method of aerobic granular sludge. Background technique [0002] With the gradual development of sewage treatment technology, researchers at home and abroad have found that there are many disadvantages in the traditional activated sludge method that need to be solved urgently, such as loose sludge structure, poor settling performance, high operating cost, large floor area, and excess sludge. Large quantities, etc., so the aerobic granular sludge process came into being. Aerobic granular sludge is activated sludge under aerobic conditions, which is condensed into microbial aggregates with clear outline and regular appearance under the action of external force and self-immobilization, which can retain more microbial biomass for structures and ensure a higher The sludge concentration is high, so it has strong ...

Claims

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Application Information

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IPC IPC(8): C02F11/12
Inventor 湛含辉王晴晴王良杰孙璨
Owner CHINA UNIV OF MINING & TECH
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