Organic polluted site in-situ oxidation repairing system and technology

Abstract

The invention relates to the field of environment protection, in particular to an organic polluted site in-situ oxidation repairing system and technology. The system comprises a movable box type platform, a control system, an ozone system, a monitoring system and a hydrogen peroxide system. According to the method, a pressurizing pump is utilized for pulsed injection of the ozone and the hydrogenperoxide into a polluted area in batches, and organic matter pollutants are thoroughly degraded through the coordinated oxidization action between the ozone and the hydrogen peroxide. The organic polluted site in-situ oxidation repairing system and technology are mainly used for repairing polluted soil and underground water and have the beneficial effects that mobility is achieved, disturbance islittle, secondary pollution is avoided, rapidness and high efficiency are achieved, operation is simple, and cost is low.

Description

technical field [0001] The invention relates to the field of soil and groundwater remediation in environmental protection, in particular to an in-situ oxidation remediation system and remediation process for organic polluted sites. Background technique [0002] In recent years, the problem of polluted soil has become increasingly prominent. The main pollutants include heavy metals and organic pollutants, which pose a safety threat to the surrounding population. Therefore, the country pays more and more attention to the restoration of contaminated sites, and the development of various restoration technologies is imminent. Traditional restoration technologies are divided into in-situ restoration and ex-situ restoration. It is worth mentioning that the "Soil Pollution Prevention and Control Action Plan" (referred to as "Soil Ten Articles") clearly emphasizes the importance of in-situ remediation. It has great development prospects in soil remediation. [0003] Existing in-sit...

AI Technical Summary

Problems solved by technology

However, the oxidation-reduction potential of the oxidant used in this invention is low, and the oxidation effect is poor; the extraction-dosing-injection method adopted increases the complexity of repair; the separation of the extraction well and the injection well easily causes the expansion of the polluted area; in addition , the present invention does not clearly explain the injection method and injection pressure

[0005] Chinese patent document CN104174643A discloses an in-situ remediation device and method for organically polluted soil and groundwater. The present invention designs an organically polluted soil and groundwater system that includes a pneumatic source system, a dissolving and dispensing system, an in-situ injection system, and an injection well system. Repair device, which can inject the oxidizing agent configured by the dissolving and dispensing system into the polluted area under a certain pressure through the injection system to repair the target pollutants, but the invention does not describe the oxidizing agent used in detail, and it can only be used for liquid medicaments Added, gas oxidizing agents are not mentioned, the overall mobility of the whole repair system is poor

[0006] Numerous site remediation cases show that the existing in-situ oxidation remediation technology is difficult to meet the purpose of efficient remediation, and there are still many key technical problems that need to be solved urgently

So far, there is no report on an integrated mobile remediation system and remediation process that combines the advantages of in-situ oxidation and ozone-hydrogen peroxide combined oxidation to simultaneously treat soil and groundwater

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