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Method and device for inclined plate selective cultivation of aerobic granular sludge

A technology of aerobic granular sludge and selective cultivation, which is applied in the direction of dehydration/drying/concentrated sludge treatment, etc., which can solve the problem of increasing the initial investment cost of the aerobic granular sludge process in the start-up time, and the start-up time hindering the application of aerobic granular sludge. , aerobic granular sludge and other problems such as long start-up time, to achieve the effect of shortening start-up time, shortening culture time and compact structure

Inactive Publication Date: 2018-02-09
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 time of cultivating aerobic granular sludge with ordinary flocculent sludge as inoculum sludge is relatively long, which greatly hinders the industrial application of aerobic granular sludge

Method used

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  • Method and device for inclined plate selective cultivation of aerobic granular sludge
  • Method and device for inclined plate selective cultivation of aerobic granular sludge
  • Method and device for inclined plate selective cultivation of aerobic granular sludge

Examples

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 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 the projected areas of...

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 slant plate selection culture device is installed according to embodiment 1 or embodiment 2, and the inoculation sludge is dropped into, so that the initial sludge concentration is within the scope of 3500 ~ 4500mg / L, and the well is passed into the well by the water inlet pipeline. 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 particl...

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Abstract

The invention discloses a slant plate selective cultivation method and device for aerobic granular sludge, belonging to the field of environmental engineering sewage treatment. The method involved in the present invention is to install a plurality of inclined plate groups composed of support rods and inclined plates in the entire aerobic reactor or in some areas of the aerobic reactor. Sliding or rolling down, increasing the probability of collision between sludge, promoting the accumulation of sludge, thereby accelerating the formation of aerobic granular sludge. The device for realizing the method mainly includes a slanted plate group and a fixed bridge, wherein a plurality of slanted plates are uniformly fixed on a support rod to form a slanted plate group, and the fixed bridge is used for fixing the slanted plate group in the aerobic reactor. The beneficial effect of the invention is that the sludge granulation can be promoted continuously and stably.

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