Stirring and separation apparatus for treating mercury-containing sludge

Abstract

The invention discloses a stirring and separation apparatus for treating mercury-containing sludge. The stirring and separation apparatus comprises a separation box and a conveying box, wherein an inner cavity of the separation box is provided with a heating cavity, the top of the separation box is provided with a sludge inlet pipe, an exhaust pipe and a curing agent feeding pipe from left to right, the left side of the separation box is provided with a first driving motor, a power output end, at the right side, of the first driving motor is connected with a first rotating shaft and a second rotating shaft, the outer walls of the first rotating shaft and the second rotating shaft are provided with a spiral stirring vanes in a welding manner, an inner cavity of the heating cavity is provided with a heating pipe group, the left side wall of the conveying box is provided with a second driving motor, the second driving motor is connected with a third rotating shaft, the third rotating shaft is sleeved with a spiral feeding packing auger, and the right side of the bottom of the conveying box is provided with a material outlet. According to the characteristics that mercury and mercurideare likely to volatilize and decompose when heated, the content of mercury in the mercury-containing sludge can be reduced; and moreover, the physical properties of the sludge are changed by virtue ofa curing agent, so that the sludge forms a solid with good integrity, and the sludge is convenient to collect and transport.

Description

technical field [0001] The invention relates to the technical field of mercury-containing sludge treatment, in particular to a stirring and separating device for treating mercury-containing sludge. Background technique [0002] Mercury-containing sludge is sludge containing heavy metal mercury. It is widely used in the fields of chemistry, medicine, electronic appliances, etc., and produces a large amount of mercury-containing sludge. However, mercury is a toxic heavy metal, and mercury-containing sludge is discharged into nature. , in addition to affecting the health of people who are directly exposed to mercury-containing sludge, and because mercury is difficult to excrete from the body, the body of higher organisms will enrich mercury along with the ecological chain, and the mercury discharged into nature will eventually affect the human body. Traditional sludge treatment methods such as landfill and incineration cannot meet environmental protection requirements. Before t...

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Problems solved by technology

[0002] Mercury-containing sludge is sludge containing heavy metal mercury. It is widely used in the fields of chemistry, medicine, electronic appliances, etc., and produces a large amount of mercury-containing sludge. However, mercury is a toxic heavy metal, and mercury-containing sludge is discharged into nature. , in addition to affecting the health of people who are directly exposed to mercury-containing sludge, and because mercury is difficult to excrete from the body, the body of higher organisms will enrich mercury along with the ecological chain, and the mercury discharged into nature will eventually affect the human body

Traditional sludge treatment methods such as landfill and incineration cannot meet environmental protection requirements. Before the mercury-containing sludge is discharged, the mercury needs to be separated to meet the safe discharge standard. Moreover, the sludge is not easy to transport, which is difficult and expensive. , for this purpose, we propose a stirring and separating device for treating mercury-containing sludge

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