Centrifugal dewatering machine

Decanter Centrifuge machine by the main shaft and the drum with a hollow auger composition, the sludge is fed by the hollow shaft of the drum, the thousands of times greater than gravity centrifugal force at high speed rotation, the people immediately left behind drum cavity. A larger proportion of sludge particles, and thus the centrifugal force is also larger, being left attached to the rotating hub inner wall, forming a solid layer; small water density, the centrifugal force is small, only generating a fluid layer on the inside of a solid layer. Solid layer of sludge in the auger slow push, is transported to the cone end of the drum, the drum through mud outlet continuously discharged liquid by overflow discharge outlet to the outer drum, bringing together discharged after dehydration machine.

Features Decanter Centrifuge Machine: small footprint, simple operation, continuous operation, high degree of automation, less pollution of the work environment, the smaller labor intensity of the operator; horizontal screw centrifugal sludge dewatering machine load fluctuations that affect relatively small, due to the centrifugal force is large, it is less demanding on the sludge pretreatment (flocculation), therefore, the choice of smaller molecular weight flocculant and the amount is small, low operating costs.

Centrifugal dewatering machine dewatering technology has made great progress in recent years, especially in some foreign advanced technology, such as Sweden AlfaLayal, Germany FlOwttwey, the United States sharples, Japan Ishikawa Harima companies producing spiral centrifugal dewatering machine, its cake solid rate of more than 30 percent of continuous operation, stable and reliable, may not be concentrated slurry, high degree of automation; and the whole operation is conducted in a closed environment, there is no sewage and sludge dewatering machine around exist, there is no foul odor, can greatly improve the working environment for operators, thus favored by the industry, it has great market potential.

2. The belt filter press dewatering machine
Belt filter press sludge dewatering machine is level with the upper and lower two tensioned filter belt clip, from a series of S-shaped after a regular arrangement of roll tube, relying on the filter itself with the tension of the formation of sludge layer and press shear force, continuous operation, the sludge layer is squeezed out of the water, in order to achieve sludge dewatering.

Greater impact by belt filter press sludge dewatering machine load fluctuations, the sludge load is heavy, the sludge will be from both sides of the filter with overflow, contaminated sites; operation of the filter into the lower part of the band after, you need a lot of water recoil adhering to the filter belt sludge, so as not to clog the filter with pores due to belt filter press dewatering machine is open work, greater pollution of the work environment, water consumption is large; belt filter press dewatering machine operation more complicated, often running with deviation filter, filter belt wear is also large, the need for timely alignment and replacement with a new filter, so that management control is relatively complex, the requirements for quality operators running high; filter press dewatering machine sludge pretreatment (flocculation) more demanding and the amount of high molecular weight flocculant big, so expensive and costly.

3. The plate and frame filter press dewatering machine
Plate and frame filter press is squeezed through the frame, so that the water within the sludge is discharged through a filter cloth, to achieve the purpose of dehydration. It mainly consists of people recessed type filter plate, frame, automatic - pneumatic suspension system closure system side, the filter plate vibration system, compressed air system, filter cloth and high-pressure washing device body side protector and the like. Equipment selection should consider the following aspects:

(1) of cake solid rate requirements. Usually plate and frame filter press dewatering machine compared with other types, cake solid highest rate of up to 65 percent if the sludge from the viewpoint of reducing the stacking area factor, plate and frame filter press should It is the preferred solution.
(2) filter plates and filter cloth materials. Corrosion resistance is required, with a certain tensile and compressive strength.
(3) moves the filter plate. Requested by a hydraulic pneumatic device automatic or semi-finished, in order to reduce labor intensity.
(4) labor-intensive operations, a larger area, large contaminated sites, filter cloth, filter plate loss, low production efficiency.