Method for restoring polychlorinated biphenyl polluted site soil

A PCB and contaminated soil technology, applied in the restoration of contaminated soil, etc., can solve the problem of unsatisfactory restoration of PCB-contaminated soil and achieve effective restoration
CN105290101AInactive Publication Date: 2016-02-03天津环科立嘉环境修复科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
天津环科立嘉环境修复科技有限公司
Publication Date
2016-02-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of the environmental engineering polluted site soil restoration, and particularly relates to a method for restoring polychlorinated biphenyl polluted site soil. The method comprises the following steps: synergistic elution, primary chemical treatment, secondary chemical treatment, anaerobic organism treatment and aerobic organism treatment. For the soil restoration problem of the real polychlorinated biphenyl polluted site, a restoration process combining the chemical treatment of chemical elution, acid regulation, zero-valent iron dechloridation, iron carbon micro-electrolysis, catalytic oxidation, biological anaerobic dechloridation and biological aerobic oxidation and biological treatment. Various effects such as chemical dechloridation (dechloridation effect of zero-valent iron), chemical oxidation (iron carbon micro-electrolytic effect of the zero-valent iron and active carbon and catalytic oxidation effect of oxidized medicine), biological anaerobic dechloridation effect and biological aerobic oxidation effect are reasonably integrated in one technology, so that the optimization of technology, economy, practicability and feasibility is realized.
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Description

technical field

[0001] The invention belongs to the field of soil restoration of environmental engineering polluted sites, and in particular relates to a method for soil restoration of polychlorinated biphenyl polluted sites. Background technique

[0002] Polychlorinated biphenyls (PCBs) are a group of chlorinated aromatic hydrocarbon compounds with 209 homologues formed by chemically catalyzing the reaction by substituting 1 to 10 chlorine atoms for hydrogen on the biphenyl molecule at different positions. Its chemical expression is C 12 h 10-n Cl n . PCBs have excellent physical and chemical properties such as thermodynamic stability, chemical inertness, non-flammability, and high electrical resistivity. Toxicity and other characteristics can pose a great threat to organisms and human health through the transmission of the food chain. It has been banned and included in the first list of controlled pollutants in the Stockholm Convention on Persistent Organic Pollutants....

Claims

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