Engineered remediation equipment and remediation method for heavy metal arsenic and lead contaminated soil

A lead-contaminated soil and remediation method technology, applied in the field of heavy metal soil remediation, can solve the problems of not considering the cost economy of leaching, remediation technology, high requirements for site and personnel management, and increase of site circulation and utilization time. Avoid the risk of long-term monitoring, improve the efficiency of use, and improve the effect of repair efficiency
CN112588803APending Publication Date: 2021-04-02ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
1 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGKE DINGSHI ENVIRONMENTAL ENG CO LTD
Publication Date
2021-04-02

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention discloses engineered remediation equipment and remediation method for heavy metal arsenic and lead contaminated soil. The remediation equipment comprises a slurry making system, a screening and washing system, a leaching and leaching system and a dehydration system which are connected in sequence. The remediation method comprises the steps: (1) preparing slurry; (2) screening and washing; (3) leaching and extracting; and (4) dehydrating. Key parameters such as a slurry-making water-soil ratio, a screening and washing water-soil ratio and an agent leaching liquid-solid ratio are improved, meanwhile, according to the nature of south and north soil, south clay soil is more beneficial to attachment of arsenic, lead and other heavy metals, and the particle size grading limit of screening and washing and agent leaching in the remediation process is defined; economic cost accounting is carried out on the process, the engineered remediation equipment and remediation method for the heavy metal arsenic and lead contaminated soil are provided, and the remediation efficiency of the soil can be economically and effectively improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an engineered repair equipment and method for soil contaminated by heavy metal arsenic and lead, belonging to the field of heavy metal soil repair. Background technique

[0002] In recent years, with the rapid development of social economy and high-intensity human activities, the overall soil environment in my country is not optimistic. Some areas have serious soil pollution, and the soil environment problems of industrial and mining wasteland are prominent. The total number of points exceeding the standard in the country's soil is 16.1%, and the number of points exceeding the standard for inorganic pollutants accounts for 82.8% of the total number of points exceeding the standard. , a wide range, especially in the smelter and its surrounding soil, the detection rate of arsenic and lead is high.

[0003] At present, the commonly used remediation technologies for heavy metal-contaminated soil are solidification stabilization an...

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