Method for quickly acclimating microorganism capable of degrading 2,4,6-trichlorophenol

A technology of trichlorophenol and microorganisms, which is applied in the field of microorganisms that quickly domesticate and degrade 2,4,6-trichlorophenol, can solve the problems of long start-up time and insufficient degradation ability, and achieve fast domestication speed, large degradation amount, and reduced The effect of hydraulic retention time

Active Publication Date: 2019-03-22
BEIJING UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problems of long system start-up time and insufficient degradation ability of the traditional co-metabolism technology in domestication and treatment of toxic organic matter, and provides a method for rapid domestication of microorganisms that degrade 2,4,6-trichlorophenol

Method used

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  • Method for quickly acclimating microorganism capable of degrading 2,4,6-trichlorophenol
  • Method for quickly acclimating microorganism capable of degrading 2,4,6-trichlorophenol

Examples

Experimental program
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Effect test

Embodiment 1

[0026] 1) Start the SBR reactor: The inoculated sludge of this system is the sludge from the secondary sedimentation tank of the urban sewage treatment plant. After inoculation, the sludge concentration of the SBR reactor is maintained between 4000 and 5000 mg / L.

[0027] 2) The runtime adjustment operation is as follows:

[0028] 2.1) The first stage: 0 to 36 days, the domestication system only introduces the distribution water containing 2,4,6-trichlorophenol, and 2,4,6-trichlorophenol is dosed according to the gradient concentration, that is, from 10mg / L Increase to 80mg / L in turn. After adding each concentration, no 2, 4, 6 trichlorophenols can be detected in the effluent until the degradation of microbial p-chlorophenols reaches the maximum, indicating that the first stage of domestication is completed; the second stage: 36 ~40 days, while maintaining the water inflow in the first stage, start to introduce sucrose to match the water, the sucrose concentration is 268mg / L, ...

Embodiment 2

[0033] The difference between this embodiment and Example 1 is that the concentration of sucrose in the influent is 357 mg / L. The degradation of 2,4,6-trichlorophenol and 2,4,6-trichlorophenol in the influent and effluent were detected respectively. The result is as figure 2 As shown in (b), after stable operation, the degradation amount of 2,4,6-trichlorophenol is 47mg / L.

Embodiment 3

[0035] The difference between this embodiment and Example 1 is that the concentration of sucrose in the influent is 447 mg / L. The degradation of 2,4,6-trichlorophenol and 2,4,6-trichlorophenol in the influent and effluent were detected respectively. The result is as figure 2 As shown in (c), after stable operation, the degradation amount of 2,4,6-trichlorophenol is 35mg / L.

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Abstract

The invention discloses a method for quickly acclimating microorganism capable of degrading 2,4,6-trichlorophenol, and belongs to the technical field of biological sewage treatment. The method is characterized by taking an SBR (Sequencing Batch Reactor) as a main reaction device, inoculating activated sludge of a secondary settling pond of a municipal sewage treatment plant, and acclimating by adopting two stages, i.e., firstly introducing sewage containing the 2,4,6-trichlorophenol to enter the SBR for aeration acclimating, thus obtaining the activated sludge having certain degradation ability; then taking saccharose as a co-substrate organic carbon source, and introducing the saccharose into the SBR for aeration acclimating, thus finally obtaining aerobiotic activated sludge with higherability of degrading the 2,4,6-trichlorophenol. Through a two-stage acclimating method adopted by the invention, not only the microorganism with the higher ability of degrading the 2,4,6-trichlorophenol is enabled to be obtained within a shorter time, but also energy consumption is reduced, and a guiding significance in treating phenolic wastewater is obtained.

Description

technical field [0001] The invention belongs to the field of sewage biological treatment, in particular to a method for rapidly domesticating and degrading microorganisms that degrade 2,4,6-trichlorophenol based on co-metabolism technology, which can be used in environments containing 2,4,6-trichlorophenol Treatment of phenolic wastewater. Background technique [0002] Trichlorophenol is mainly used in the industry to produce dye intermediates, pesticides and preservatives and other products. Due to non-standard discharge, it often appears in the wastewater of coking, printing and dyeing, wood preservation and other industries, and the existence of trichlorophenol has been detected in natural water bodies. As a typical and widely used industrial raw material, 2,4,6-trichlorophenol has "three-cause" effects on human body and aquatic animals and plants. It is a toxic organic pollutant and has been listed as a priority pollution control by the US Environmental Protection Agenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F101/34C02F101/36
CPCC02F3/1263C02F2101/345C02F2101/36C02F2305/06Y02W10/10
Inventor 孙治荣王建广
Owner BEIJING UNIV OF TECH
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