Efficient sludge concentration and dehydration system and dehydration method thereof

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a sludge concentration and dehydration system and a dehydration method thereof. The system is provided with a precipitation cone hopper on the lower side of a sludge concentration tank; a sludge delivery pipe for delivering sludge solution into the sludge concentration tank is arranged on the sludge concentration tank, a clean water discharge mechanism for discharging clean water to the exterior of the sludge concentration tank and a sludge discharge mechanism for discharging concentrated sludge to the exterior of the sludge concentration tank are also arranged on the sludge concentration tank; and the system also comprises a dissolved air floatation mechanism consisting of a dissolved air pump inlet pipe, a dissolved air pump, a buffer and a dissolved air water distributor. In the dehydration method, the sludge in the water continuously floats by the dissolved air technology of the dissolved air pump, so that the separated water becomes clean; and when air floatation is stopped and the clean water is discharged, the floating sludge naturally falls into the precipitation cone hopper and reaches the dehydration requirement. The dehydration effect of the dehydration system is good, the water content of the sludge can be furthest reduced, conditions are created for subsequent sludge dehydration and drying processes, and the operating costs of dehydration and drying are reduced.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a sludge concentration and dehydration system and a dehydration method thereof. Background technique [0002] In the field of environmental engineering, biochemical technology for treating urban sewage and industrial wastewater has been adopted by many design departments or owners, and has played an important role in the operation of the devices. At the same time, the matching sludge treatment system is generally equipped with a sludge thickening tank, which is used as a facility for the disposal or concentration of the remaining sludge of the device. However, in the actual operation process, most of the sludge thickening tank is used as a container for sludge discharge and storage, and does not really play the role of sludge thickening and water removal. Therefore, most of the sludge discharged from the existing sludge thickening tank is Thin sludge with high water con...

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Problems solved by technology

Therefore, in engineering design, in order to ensure the drying effect of sludge treatment, when selecting equipment, the sludge treatment volume is greater than the actual sludge production volume, that is, the sludge drying equipment and its supporting process facilities are enlarged several times design, otherwise the normal operation of the sewage treatment plant cannot be guaranteed

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