Heavy metal contaminated soil pretreatment equipment

Abstract

The invention relates to the technical field of environmental protection, and discloses heavy metal contaminated soil pretreatment equipment which comprises a crushing box, a separation box, a mixingbox and a medicine storage tank. A wedging block is fixedly connected to the inner wall of the crushing box; a plurality of crushing teeth are fixedly connected to the inner side of the wedging block;a rotating column is rotatably connected to the middle of the crushing box, a plurality of stirring teeth are fixedly connected to the side wall of the rotating column, a feeding funnel is fixedly installed at the top end of the crushing box, the separation box is fixedly connected to the bottom end of the crushing box, a screen is arranged in the middle of the separation box, and a slag discharging pipe is fixedly connected to one end of the separation box. According to the heavy metal contaminated soil pretreatment equipment, the service life of the crushing device is prolonged, the treatment effect of the screen is improved, the screen is prevented from being blocked, the stirring degree and efficiency can be improved, the mixing uniformity degree of heavy metal contaminated soil can be guaranteed in the mixed chemical remediation treatment process, and the chemical and soil mixing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to heavy metal polluted soil pretreatment equipment. Background technique [0002] With the gradual expansion of the scale of urbanization, people's production activities have also gradually increased. At present, there are various factors that produce heavy metal polluted soil. In the process of agricultural production, in order to obtain higher income, farmers use chemical fertilizers with high heavy metal content during the growth of crops. Heavy metal fertilizers accumulate in the soil for a long time and are not easy to volatilize. , causing serious damage to the local soil to a certain extent. At the same time, with the increasing pressure of social competition, in the process of industrial production, due to the weak supervision of smelting emissions in some areas, smelting emissions often exceed the standard, causing pollution to the environment. With the ...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a heavy metal-contaminated soil pretreatment equipment, in order to solve the problem that the crushing of the soil will be disturbed by sand and gravel in the current process of processing the contaminated soil, thus causing damage to the crushing device At present, in the process of sieving the soil, the sieving effect is poor, which may cause the clogging of the sieve. In the process of mixed drug remediation of the filtered heavy metal-contaminated soil, the relationship between the drug and the soil cannot be guaranteed. The uniformity of mixing, and the efficiency of the mixing process of drugs and soil is relatively low, so we propose a problem of heavy metal contaminated soil pretreatment equipment

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