Treatment device for cadmium contaminated soil

Abstract

The invention discloses a treatment device for cadmium contaminated soil. The device is characterized in that the left side of a motor is rotatably connected to a driving shaft, wherein the driving shaft is in rolling connection with a first conveyor belt, and the lower end of the first conveyor belt is in rolling connection with a driven shaft; the driven bearing is rotatably connected to a fertilizer box through a bearing; a small bevel gear which is engaged with a big bevel gear is fixedly connected to the left end of the driven shaft; the big bevel gear is fixedly connected to a rotating shaft; the rotating shaft is rotatably connected to a device body through the bearing, and a gear which is engaged with an annular rack is fixedly connected to the middle part of the rotating shaft; the annular rack is fixedly connected to a turntable. According to the device, a through hole in the turntable communicates with a guide pipe at the bottom part of a storing box in a reciprocating manner through the rotating turntable, and thus the intermittent feeding function is realized; and meanwhile, the rotating turntable is capable of driving a stirring shaft to rotate so as to drive a stirring bar to rotate to primarily crush soil bocks at the upper parts of the storing box, and then the soil blocks are continuously crushed through a rotating crushing roller and an abrasion-resistant plate. The device is reasonable and practical in structure design; the contaminated soil treatment effect is greatly improved; the crushed oil can be mixed with organic fertilizer, so that the soil can be improved.

Description

technical field [0001] The invention relates to an environmental protection device, in particular to a treatment device for cadmium-contaminated soil. Background technique [0002] Soil pollutants can be roughly divided into two categories: inorganic pollutants and organic pollutants. Inorganic pollutants mainly include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium and fluorine, etc. Organic pollutants mainly include organic pesticides, phenols, cyanides, petroleum, synthetic detergents, 3,4-benzopyrene, and harmful microorganisms brought by urban sewage, sludge, and manure. When there are too many harmful substances in the soil and exceed the self-purification ability of the soil, the composition, structure and function of the soil will change, the microbial activities will be inhibited, and the harmful substances or their decomposition products will gradually accumulate in the soil throu...

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Problems solved by technology

[0004] At present, the existing cadmium-contaminated soil treatment is mostly through manual treatment, the degree of mechanization is low, the soil crushing and the mixing of soil and fertilizer are not effective.

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