Drum-type soil heavy metal elution continuous operation apparatus

Abstract

The present invention discloses a drum-type soil heavy metal elution continuous operation apparatus, which comprises four parts such as a drum (1), a soil liquid collecting zone (2), a mud bucket (3) and an inclined plate separation zone (4), wherein the length of the drum (1) is 5 m, the inclined angle is 10 DEG, the diameter is 1 m, the anti-corrosion lining is arranged inside the drum, a triangular thread-like structure is arranged, the major diameter of the triangular thread-like structure is 0.95 m, the minor diameter of the triangular thread-like structure is 0.35 m, the pitch is 0.25 m, the length of the soil liquid collecting zone (2) is 1 m, the width of the soil liquid collecting zone (2) is 1 m, the depth of the soil liquid collecting zone (2) is 0.5 m, the inclined angle of the mud bucket (3) is 60 DEG, the depth of the mud bucket (3) is 0.5 m, the length of the inclined plate separation zone (4) is 1 m, the width of the inclined plate separation zone (4) is 1 m, and the inclined angle of the inclined plate separation zone (4) is 60 DEG. The drum-type soil heavy metal elution continuous operation apparatus has the following advantages that: the continuous operation of the soil heavy metal elution is achieved, the elution time and the soil elution volume per unit time can be adjusted through the rotation speed of the drum, the operation condition requirements on the rapid heavy metal elution of the soil with different contamination types can be met, and the whole apparatus achieves the automatic soil liquid separation so as to easily achieve the recovery of the clean soil and the subsequent centralized treatment of the heavy metal-rich eluent.

Description

technical field [0001] The patent of the invention belongs to the technical field of chemical remediation of heavy metal-contaminated soil, and specifically relates to a drum-type soil heavy metal eluting device, which is especially suitable for ectopic remediation of heavy metal-contaminated soil. Background technique [0002] Soil is an important basis for the natural environment and agricultural production on which human beings depend. Since the 1920s, due to the development of industry, the output of metals has increased significantly, and the resulting heavy metal environmental pollution has also emerged. Many countries have begun to face the problem of soil pollution seriously hindering agricultural production. According to reports, the cultivated land polluted by heavy metals in my country has reached 300 million mu, and heavy metal pollution has shifted from industry to agriculture, urban areas to rural areas, surface to underground, upstream to downstream, from wate...

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Problems solved by technology

Patent document CN102225425A "A method of leaching for remediating heavy metal-contaminated soil" reports a chemical remediation method for heavy metal-contaminated soil. However, this method is still in the laboratory stage; Method and its device” proposed a heavy metal extraction method for cadmium, chromium, copper, mercury, lead and other elements polluted soil, but this method is also in the laboratory stage

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