Screen, Sludge Dewatering Machine

HLDS Multi-plate Sludge Dewatering Screw Press belongs to the screw press, it’s clog-free and can reduce the sedimentation tank and sludge thickening tank, saving the cost of sewage plant construction. HLDS using screw and the moving rings to clean itself as clog-free structure, and controlled by the PLC automatically, it’s a new technology that can replace the traditional filter press like belt press and frame press, the screw speed is very low, so it cost low power and water consumption in contrast to the centrifuge, it is a cutting edge sludge dewatering machine.

Working Principles

The conditioned sludge flows into the filter zones from the flocculation tank and is pushed forward

to the discharging end. With the gaps between the thread of the shaft is getting even narrower,the pressure

on the sludge is getting higher and higher. Then the water is separated from the sludge  and flows out from

the gaps between the moving rings and fixed rings. The movement of the moving rings will clean the gaps

between moving and fixed rings and prevent the machine from blockage..

The filtered sludge cakes will be pushed forward by the shaft and finally discharged from the end.

Technology Advantages   

1. Configurating exclusive spiral plate forpre-concentration and better for treating low concentration sludge.

* Replacing gravity type dehydrator torealize efficient concentration of sludge.

* Flocculation and concentration operatingtogether makes dewatering easy.

* Optimize concentration of slurry fordewatering with solenoid control valve.

2. Low speed operation, low noise, low energyconsumption, only 1/8 of the belt type, 1/20 of the centrifuge

3. Rings substitute filter cloth, selfcleaning, no clogging, easy treatment  of oily sludge

4. Reduce the cost of infrastructureinvestment, improve the results of treatment

* The dewatering screw press can directlytreat the sludge from the aeration tank and the sedimentation tank

so that thesludge thickening tank is not needed any   more. Therefore, the  construction cost can be greatly

reduced andwell avoided the phosphorus releasing problem.

* Saving the cost of sludge thickening tankand other equpments investment.

* Occupy smaller area, reduce constructioninvestment for dewatering. room

5. Fully automatic control, easy operation andmaintenance

* The dewatering screw press has no easy-blockingcomponents like filter cloth or filtration pore inside.

Its operation is safeand easy. It also can be set to operate automatically via the elec-controlcabinet .


♦ Enclosed to minimize odors and noise

♦ Very low wash water usage(1/8 compared with belt press)

♦ Very lowpower consumption(1/20 compared with centrifuge)

♦ High cakesolids

♦ Minimal operator requirement

♦ Easy to operate and maintain

♦ Autostart-up, run and shutdown

♦ Touchscreen operation optional

♦ Sludge Flow and Cake Monitoring System

♦ Available with many other options like Dairy, Palm Oil, etc.

Typical Applications

Press can be provided with all equipment required for dewatering included and factory mounted, piped and wired on asingle stainless steel skid. This equipment includes the sludge pump, washwat

The operation of a set of sludge dewatering equipment including 2 ste of 403 sludge dewatering machine ,1set of automatic chemical dosing system and shaftless screw conveyor.

The Sludge Dewatering Screwer pump, polymer dosing system and control panel. The system features fully automated one pushbutton startup and shutdown. Once started up the system can run unattended and can be set to shutdown automatically with no operator intervention.

Technical parameters