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A kind of pyrolysis treatment method for environmental protection of organic pollutants

A technology for organic pollutants and environmental protection, applied in the field of organic pollutants environmental protection pyrolysis treatment, can solve problems such as the impact of sludge agricultural safety and effectiveness

Active Publication Date: 2022-03-15
JILIN AGRICULTURAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Persistent organic pollutants enter the urban sewage treatment system with industrial wastewater and domestic sewage. Because of their lipophilicity, hydrophobicity and refractory properties, except for a small amount of microbial decomposition and utilization, most of them are enriched in sludge through adsorption. The safety and effectiveness of sludge for agricultural use have a serious impact, and it has become a limiting factor for sludge land use that is comparable to heavy metals

Method used

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Embodiment Construction

[0012] The biodegradation process of organic pollutants is long. On the one hand, because the macromolecular organic matter in organic pollutants is blocked by the cell wall and cell membrane of microorganisms, it cannot directly enter the cell for decomposition and utilization; on the other hand, because the chemical structure of organic pollutants is stable, and with the The increase of molecular weight and aromatic hydrocarbon ring number increases the difficulty of degradation, resulting in low biological treatment efficiency. Therefore, pretreatment is required before the pyrolysis of organic pollutants to accelerate the destruction of the cell wall of organic pollutant microorganisms, fully release intracellular substances, promote the hydrolysis and acidification of organic pollutants, improve the decomposition and absorption capacity of microorganisms on organic matter, and promote the entry of organic matter into cells and excretion of metabolites from cells.

[0013]...

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Abstract

The present invention proposes a pyrolysis treatment method for environmental protection of organic pollutants, which uses a trough-type ultrasonic generator to perform ultrasonic anaerobic pretreatment on organic pollutants, and takes the original organic pollutants and places them in the reaction tank of the trough-type ultrasonic generator. NaOH is added under stirring, and the organic pollutants are ultrasonically decomposed. The organic pollutants after ultrasonic decompression are put into the anaerobic digestion reactor, and the organic pollutants react with ozone and defoam. After the ultrasonic anaerobic pretreatment is completed, use The pyrolysis device conducts the pyrolysis process of polluted organic matter, collects and weighs the solid residue, and calculates the pyrolysis efficiency.

Description

technical field [0001] The invention relates to a degradation method of pollutants, in particular to a pyrolysis treatment method for environmental protection of organic pollutants. Background technique [0002] Persistent organic pollutants enter the urban sewage treatment system with industrial wastewater and domestic sewage. Because of their lipophilicity and hydrophobicity and refractory properties, except for a small amount of microbial decomposition and utilization, most of them are enriched in sludge through adsorption. The safety and effectiveness of agricultural use of sludge have a serious impact, and it has become a limiting factor for sludge land use that is comparable to heavy metals. Contents of the invention [0003] In order to solve the technical problems existing in the above-mentioned prior art, the present invention proposes a method for pyrolysis treatment of organic pollutants for environmental protection, [0004] Ultrasonic anaerobic pretreatment o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/02A62D3/40C02F11/04C02F11/10A62D101/20
CPCA62D3/02A62D3/40C02F11/04C02F11/10A62D2101/20A62D2203/02C02F2209/16C02F2209/14C02F2209/12C02F2209/08C02F2209/10Y02W10/40
Inventor 高云航庄会双张喜庆刘淑霞成海建宋恩亮梁小军祁兴磊孙晓玉郝建刚杨食堂张国梁张文华朱跃明祝远魁张寰波王琦魏菁
Owner JILIN AGRICULTURAL UNIV