A chemical washing system for treating heavy metal and organic pollution in soil

Abstract

The invention provides a chemical leaching system for treating soil heavy metal and organic pollution. The chemical leaching system is characterized by comprises soil crushing and screening equipment, an upward conveyor belt, a spraying system, a downward conveyor belt, muddy water separation and overflowing equipment, a first switch valve, an automatic movable sieve plate, an inner drum, an outer drum, a second switch valve, a leach liquor conveying pipeline, a coagulation tank, a precipitation tank, a buffer tank, leach liquor filtration adsorption equipment, a leach liquor treated effluent conveying pipeline and a leacheate preparation tank, wherein a coagulant storage tank is connected with the coagulation tank via a coagulant conveying pipeline; the leacheate preparation tank is connected with the spraying system via a high pressure dosing washing pump. The chemical leaching system can be applied to engineering application, is suitable for leaching restoration of soils; waste residues, waste water and waste gas are treated in the soil leaching process to prevented secondary pollution, and the green restoration can be realized in the whole process of restoration; automation is realized as a great deal of human input is not needed in the whole process.

Description

technical field [0001] The invention relates to rinsing and repairing equipment for polluted soil, which is aimed at the ectopic repair of various soils, especially soil polluted by heavy metals and organic matter, and is suitable for large-scale industrial applications, belonging to the technical field of soil repair. Background technique [0002] Soil is an important material basis for human social production activities and an indispensable natural resource that is difficult to regenerate. At present, the situation of soil pollution in our country is very serious, and the ecological safety of agricultural products caused by soil pollution can no longer be ignored. Because the soil has a sink effect on environmental pollution, toxic and harmful chemicals in the soil are transmitted through the atmosphere and water bodies, which can endanger the survival, reproduction and life safety of humans and animals. This process may be relatively hidden, but soil pollution has threat...

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Problems solved by technology

[0006] The problem to be solved by the present invention is to overcome the difficulties of the prior art and to provide a chemical leaching automatic device suitable for large and medium-sized polluted land, so that it can efficiently and quickly complete the problem of soil remediation with less manpower input, and one And realize the treatment and reuse of eluent and the separation and compression of muddy water, etc.

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