Efficient treatment equipment for heavy metal soil

Abstract

The invention discloses efficient treatment equipment for heavy metal soil. The equipment comprises a bottom plate, wherein rollers are arranged at four corners of the lower side of the bottom plate,threaded sleeves are arranged at the left and right ends of the bottom plate, threaded rods are arranged in the threaded sleeves, support blocks are arranged on the lower sides of the threaded rods, aconnecting frame is arranged on the upper side of the bottom plate, a crushing and stirring cavity is formed in the left end of the connecting frame, a settling cavity is formed in the lower side ofthe crushing and stirring cavity, a connecting pipe is arranged on the right side of the settling cavity, a boiling cavity is formed in the right side of the connecting pipe, a first suction pipe is arranged on the right side of the boiling cavity, a stirring cavity is formed in the upper end of the right side of the first suction pipe, a second suction pipe is arranged on the upper side of the stirring cavity, an alkaline solution storage cavity is formed in the left side of the upper end of the second suction pipe, a second drainage pipe is arranged at the left end of the lower side of the stirring cavity, a settling tank is arranged on the lower side of the second drainage pipe, a third suction pipe is arranged at the right end of the settling tank, and an alkaline solution preparationcavity is formed in the upper side of the third suction pipe. Heavy metal contaminated soil can be effectively and efficiently treated, secondary pollution is prevented, and resource waste is reduced.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to high-efficiency treatment equipment for heavy metal soil. Background technique [0002] Soil heavy metal pollution refers to human activities, the content of trace harmful elements in the soil exceeds the background value, and the excessive content caused by excessive deposition is collectively referred to as soil heavy metal pollution. Heavy metals in polluted soil mainly include mercury (Hg), cadmium (Cd), lead (Pb), chromium (Cr) and metalloid arsenic (As) and other elements with significant biological toxicity, as well as zinc (Zn) and copper with certain toxicity. (Cu), nickel (Ni) and other elements. Mainly come from pesticides, wastewater, sludge and atmospheric deposition, etc. For example, mercury mainly comes from mercury-containing wastewater, cadmium and lead pollution mainly comes from smelting emissions and vehicle exhaust deposition, and arsenic is widely u...

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Problems solved by technology

[0003] At present, the soil treatment methods of heavy metal pollution include physical methods, chemical methods and microbial treatment methods, but the current equipment for heavy metal-contaminated soil is generally complicated enough, the work efficiency is low, and it may cause secondary pollution

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