Washing system for removing lead in polluted soil

A contaminated soil and leaching technology, which is applied in the field of soil pollution remediation, can solve problems such as limited research, and achieve the effects of easy preparation, low cost, and improved leaching efficiency
CN105880274AInactive Publication Date: 2016-08-24YUNNAN MINZU UNIV
5 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN MINZU UNIV
Publication Date
2016-08-24
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

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

Abstract

The invention discloses a washing system for removing lead in polluted soil. The washing system comprises ionic liquid containing choline chloride and urea and oxalic acid. A preparation method of the washing system comprises the following steps that the urea and the choline chloride are weighed correspondingly, subjected to vacuum drying, mixed evenly, and heated and stirred for 0.5 h in an oil bath at the temperature of 100 DEG C, and colorless and thick liquid, namely ionic liquid with the choline chloride and the urea, is obtained; and finally the oxalic acid and the ionic liquid with the choline chloride and the urea are fully and evenly mixed, so that the washing system is obtained. According to a use method of the washing system, the polluted soil is taken and added into the washing system for removing the lead in the polluted soil, mixing and vibration washing is carried out, and then remediation of the lead polluted soil is finished. The washing system for removing the lead in the polluted soil has the advantages of being low in cost, environmentally friendly, easy to prepare, efficient and the like, the washing efficiency is improved through the synergistic effect of the eutectic ionic liquid and the organic acid, and the washing system can be applied to treatment of soil in mining areas, and has good application prospects.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of soil pollution restoration, in particular to a leaching system for removing lead in polluted soil. Background technique

[0002] Soil heavy metal pollution remediation technology is one of the hot issues at present. The principle of heavy metal contaminated soil remediation technology is mainly through solidification and activation, and correspondingly developed physical remediation, chemical remediation and phytoremediation technologies. Chemical remediation techniques include chemical fixation, chemical extraction, and soil washing techniques. Soil leaching technology is one of the most reported soil remediation technologies at present. It has the advantages of high remediation efficiency, quick effect, less investment and consumption, and can be used to treat high and medium levels of polluted soil.

[0003] The key to soil leaching restoration technology is to find an economical and efficient leaching system w...

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