Experimental device for washing heavy metal pollution and method thereof

Abstract

The invention relates to a leaching experimental device and the method of heavy metal pollution soil, the experimental device comprises: a leaching solution storage, a peristaltic pump, a leaching column group, a hose, a three-way glass tube, a hose clip and a filter liquor collector. The end of the hose arranged on the peristaltic pump input is immersed under the storage liquid level, the hose arranged on the output of the peristaltic pump is connected with the leaching column group; the leaching column group comprises a plurality of leaching columns, the leaching columns are connected with head and tail of each other through the hose and the three-way glass tube, the projecting end of the three glass tube is provided with a hose clip; the column of the leaching column is made of perspex tube, the upper and lower port of the perspex tube is respectively provided with a nylon membrane, an O-type pad and a button, a connecting hose is extracted in the centre of the button, the connecting hose is connected with the three-way glass tube through the hose; the lower end of the leaching column group is connected with the filter liquor collector through the hose. The leaching experimental device and the method has the advantages of determining and sampling the solution concentration of different soil column depth, changing and leaching effect, and convenient measurement.

Description

technical field [0001] The invention relates to the field of treatment and restoration of heavy metal-contaminated soil, in particular to a heavy metal-contaminated soil leaching experimental device and a method thereof. Background technique [0002] With the rapid development of industry and agriculture and the urbanization of rural areas, the problem of heavy metal pollution in my country is becoming more and more serious, and the area of ​​soil pollution is also increasing year by year. The problem of heavy metal pollution in soil has become a serious obstacle to my country's economic development. Governance and restoration are imminent. [0003] The remediation of heavy metal-contaminated soil mainly includes three forms: physical remediation, chemical remediation and biological remediation, and heavy metal-contaminated soil leaching remediation technology is one of the few effective remediation technologies for heavy metal-contaminated soil, which is a form of chemical r...

AI Technical Summary

Problems solved by technology

This traditional device mainly evaluates the leaching effect by monitoring the concentration of heavy metals leached from the filtrate. However, the traditional experimental device has the following shortcomings: 1. For the concentration, change and leaching effect of the eluate at different depths of the soil column There is a lack of understanding of the effect; 2. When the soil column is long, sampling and testing will be very difficult

Images