Remediation method for organic matter contaminated soil

A technology of contaminated soil and remediation method, which is applied in the direction of restoration of contaminated soil, separation methods, chemical instruments and methods, etc. It can solve the problems of long biological treatment cycle, long time required, and large consumption of eluent, etc. Achieve the effect of reducing the cost of soil remediation, multiple times of repeated use, and good economic benefits
CN110639943AActive Publication Date: 2020-01-03河南省环境保护科学研究院
7 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
河南省环境保护科学研究院
Publication Date
2020-01-03

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a remediation method for organic matter contaminated soil. The remediation method comprises the following steps that 1, soil pretreatment; 2, continuous leaching of the soil; step 3, degradation of organic pollutants and recovery of heavy metals; and step 4, soil micro-ecological restoration. According to the invention, an elution method and a biological mud method are combined; firstly, a soil dispersing agent is mixed with the soil; soil aggregation and cementation in the leaching process are avoided; the leaching speed is increased by adopting a continuous leaching mode; meanwhile, the leaching effect is improved by compounding and combining the leaching agents; through the arrangement of tan electrostatic spinning composite filter felt, the cyclic utilization ofleacheate is realized; during soil micro-ecological restoration, an immobilized mixed degradation microbial inoculum is adopted, organic pollutants which are not eluted by leacheate and surfactants adsorbed in the soil can be degraded within 2-4 days by controlling the ventilation capacity and the stirring rate, the restoration time is short, the cost is low, the restored soil does not need to besubjected to subsequent treatment and can be directly sown, and the economic benefit is good.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of soil pollution remediation, in particular to a method for remediating organic-contaminated soil. Background technique

[0002] The current treatment method for organic-contaminated soil is to excavate the soil and carry out follow-up treatment, including landfill, incineration, leaching, adsorption, ultrasonic, microwave, biological treatment, etc. The landfill method is simple but expensive, and the pollutants still remain in the soil; the incineration method has complex equipment, high energy consumption, high cost, and secondary pollution of harmful gases and residual ash; adsorption, ultrasonic, microwave The purification effect is not ideal, the biological method has a long treatment cycle, and the treatment effect is not ideal; the leaching method is easy to operate and has high treatment efficiency, but there are problems of low miscibility between most organic substances and eluents, and the consu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More