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Method for using signal molecules for accelerating repair of disintegrated aerobic granular sludge

A technology of aerobic granular sludge and signal molecules, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve problems such as process failure

Pending Publication Date: 2019-07-09
SHANDONG UNIV
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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the present invention provides a method for accelerating the repair of disintegrated aerobic granular sludge by using signal molecules to solve the problem of process failure caused by disintegration of aerobic granular sludge , to ensure the long-term stable operation of the aerobic granular sludge reactor

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  • Method for using signal molecules for accelerating repair of disintegrated aerobic granular sludge
  • Method for using signal molecules for accelerating repair of disintegrated aerobic granular sludge
  • Method for using signal molecules for accelerating repair of disintegrated aerobic granular sludge

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Embodiment Construction

[0011] A method for accelerating the restoration of disintegrated aerobic granular sludge by using signal molecules, comprising the following steps:

[0012] (1) Adjust the reactor inlet water so that the pH value of the reactor inlet water is 6.0 to 9.0;

[0013] (2) adding exogenous signal molecules to the influent of the reactor to obtain influent containing signal molecules;

[0014] (3) Return the disintegrated aerobic granular sludge to room temperature, inoculate it into the sequencing batch reactor, and pass the influent water containing signal molecules in step (2) from the bottom of the sequencing batch batch reactor, and the sequencing batch batch reactor Operate according to the way of water intake-aeration-sedimentation-drainage;

[0015] (4) The granular sludge was basically completely repaired after 20-30 days of reactor operation, and the settling performance was good.

[0016] Preferably according to the present invention, in step (1), the reactor feedwater ...

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Abstract

The invention relates to a method for using signal molecules for accelerating repair of disintegrated aerobic granular sludge. According to the method for using the signal molecules for accelerating repair of the disintegrated aerobic granular sludge, by adding the exogenous AHLs signal molecules to repair the disintegrated the aerobic granular sludge, in a process of repairing structures of the disintegrated aerobic granular sludge, regranulation of the crushed granular sludge is accelerated, after 20-30 days, the disintegrated aerobic granular sludge is basically and completely repaired, therepaired aerobic granular sludge is smooth in particle surface, regular in shape and compact in structure, and has good settling performance, after adding of the exogenous AHLs is stopped, the granular sludge structures are still intact, and the settling performance and the granule density remain at high levels. According to the method for using the signal molecules for accelerating repair of thedisintegrated aerobic granular sludge, by adding the exogenous AHLs temporarily, an excellent repairing effect on the disintegrated aerobic granular sludge is achieved, the repaired granular sludge is intact in structure and good in settling performance, moreover, operation is simple, and practical application is easy.

Description

technical field [0001] The invention relates to a method for accelerating the restoration of disintegrated aerobic granular sludge by using signal molecules, and belongs to the technical field of wastewater biological treatment. Background technique [0002] Aerobic granular sludge is a special form of biological aggregate formed by aerobic sludge microorganisms through self-aggregation, and its granulation process involves biological, physical, chemical and other processes. Compared with ordinary activated sludge, aerobic granular sludge has the advantages of compact structure, excellent settling performance, large biomass, strong resistance to impact load, and rich microbial population, which makes up for the process defects of traditional activated sludge and becomes a wastewater biological Deal with new hotspots in field research. [0003] Aerobic granular sludge is prone to instability and final disintegration during long-term operation and long-term storage, which has...

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Application Information

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IPC IPC(8): C02F3/12
CPCC02F3/12C02F3/1263C02F2209/06Y02W10/10
Inventor 王新华胡远超高明明
Owner SHANDONG UNIV
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