Efficient dehydration device and dehydration method of sludge harmless treatment equipment

Abstract

An efficient dehydration device and dehydration method of sludge harmless treatment equipment are disclosed. The efficient dehydration device comprises a bottom plate, a dehydration outer box and a side supporting plate, the dewatering outer box and the side supporting plate are fixed on the bottom plate, the dehydration outer box is fixed to the middle of the upper end face of the bottom plate, the top end of the dehydration outer box is open, and a dehydration inner cylinder is installed at a box opening of the dehydration outer box; a U-shaped top cover is arranged over the dehydration outer box, two end leg parts of the U-shaped top cover are welded to the top ends of the two side walls of the dehydration outer box, two electric push rods are symmetrically fixed to the top wall of an inner cavity of the U-shaped top cover, an air heater is installed on the portion, between the two electric push rods, of the top wall of the U-shaped top cover, and a dehydration filter pressing mechanism is fixedly connected to the lower portions of the two electric push rods; the top end of the outer side face of the dehydration inner cylinder is fixedly sleeved with an annular toothed belt. The efficient dehydration device of the sludge harmless treatment equipment is better and more obvious in dehydration effect, and facilitates discharging and conveying of sludge blocks after dehydration is completed.

Description

technical field [0001] The invention belongs to the technical field of sludge harmless treatment, and in particular relates to a high-efficiency dehydration device of sludge harmless treatment equipment. Background technique [0002] Sludge is a solid sediment produced in the process of sewage treatment. It has a high water content, which can be as high as more than 99%. It also contains a large amount of nutrients such as nitrogen, phosphorus, and potassium that promote the growth of plants and crops. The purpose of stabilization, harmlessness and resource utilization has good utilization value; however, since sludge is a thick substance between liquid and solid, and it is difficult to separate solid and liquid by sedimentation, sludge settles naturally Afterwards, the moisture content is still high, the volume is huge, and the transportation is very inconvenient, which greatly increases the transportation cost and storage difficulty. [0003] At present, in the dehydratio...

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Problems solved by technology

[0002] Sludge is a solid sediment produced in the process of sewage treatment. It has a high water content, which can be as high as more than 99%. It also contains a large amount of nutrients such as nitrogen, phosphorus, and potassium that promote the growth of plants and crops. The purpose of stabilization, harmlessness and resource utilization has good utilization value; however, since sludge is a thick substance between liquid and solid, and it is difficult to separate solid and liquid by sedimentation, sludge settles naturally Afterwards, the moisture content is still high, the volume is huge, and the transportation is very inconvenient, which greatly increases the transportation cost and storage difficulty

[0003] At present, in the dehydration process of sludge dehydration, the method of pressure filtration is generally used to complete the dehydration, but there are still problems of incomplete dehydration and incomplete dehydration, and some methods of first pressure filtration and then drying are only made by External drying takes a long time and high cost, resulting in low overall dehydration efficiency and poor economic benefits

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