You really know how to choose the sludge dewatering unit ?Filter Press , Centrifuge or Screw Press

Comparison of advantages and disadvantages of different kinds sludge dewatering equipment:

 ● Centrifuge-----Advantages: small footprint, simple and convenient installation, low maintenance frequency and convenient use.

 Disadvantages of the centrifuge: the noise is too large, so that the work shop and nearby are affected by noise; the equipment is poorly sealed, resulting in sludge spillage at the sludge treatment site, poor working environment, high cost of wearing parts and high operating costs.

 ●Belt Filter Press-----Advantage: Continuous working mode, high sludge treatment efficiency and large processing capacity.

 Disadvantages of belt filter press: sludge dewatering is not complete, mud cake can not be formed; after work, the filter belt needs to be washed with a large amount of water, wasting resources; if there is sand and gravel in the sludge, it is easy to cause damage to the filter belt.

Remarks: The fatal problem is large quantity of wash water .Secondary pollution caused.

 ● Plate and frame filter press-----Advantages: low energy consumption, low power consumption; sludge dewatering is more thorough than belt filter press, and the moisture content of sludge cake after treatment is low;

 Disadvantages: intermittent operation, low sludge treatment efficiency, and more manual operations.

 ● Diaphragm filter press-----Advantage: Sludge treatment efficiency is higher than that of plate and frame filter press, and sludge dewatering is more thorough than the above equipment. Municipal sludge can be treated to a moisture content of 70%-75%.

 Disadvantages: need high pressure water system, waste water resources; price is slightly more expensive than ordinary plate and frame filter press.

 ●Screw Press ------Advantages:

 (1) not easy to block

 The static and dynamic ring replaces the filter cloth, self-cleaning and no clogging. It is not necessary to carry out a large amount of cleaning to prevent the filter joint from being clogged, completely reducing the flushing amount, reducing the internal circulation burden, and solving the troubles caused by the clogging of the traditional dewatering equipment.

 (2) Continuous automatic operation and simple operation

 The screw press adopts automatic control from pumping out sludge, injecting liquid medicine and discharging mud cake, and through the electric control cabinet, it is linked with the foaming machine, the mud pump, the dosing pump, etc., without the need for personnel to operate the equipment. , daily maintenance and maintenance is simple, 24 hours continuous unmanned operation. Realized the continuous automatic operation of sludge dewatering in the true sense.

 (3) Saving operating costs

 The overall design of the equipment is compact, which greatly saves operating costs. Using low-speed screw shaft extrusion technology, the power consumption is greatly reduced (only 1/8 of the belt machine, 1/20 of the centrifuge), the equipment is not blocked, and the flushing water is greatly reduced: 24 hours automatic unmanned Operation, labor costs are greatly reduced. Therefore, this equipment has also truly become a new energy-saving and environmental protection equipment in line with national policies.

 Disadvantages: the moisture content is about 80%, which is lower than other sludge dewatering machines.

Remarks:The best choice for oily sludge, the most automated sludge dewatering equipment.

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