MD132 sludge dewatering machine

Product Details

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Introduction

The Sludge Dewatering Press is an enclosed high performance sludge dewatering system. It utilizes a central screw and a slowly multi-disk filter to gradually increase pressure on flocculated sludge to produce an dry sludge cake. With electrical, water and polymer usage, and high capture rates the system is very cost effective.

The Sludge Dewatering Press can be provided with all equipment required for dewatering included and factory mounted, piped and wired on a single stainless steel skid. This equipment includes the sludge pump, wash water pump, polymer dosing system and control panel. The system features fully automated one pushbutton startup and shutdown. Once started up the system can run and can be set to shutdown automatically with no operator intervention.

Structure Principle

The main part of the dehydrator is a filter device that a screw runs through the fixed rings and moving ring. 

The small gaps between fixed rings and moving ring can filter the sludge, and the carity between screw and rings is filled with flocs. The moving ring transfers the sludge to the end of the machine with pressure and produce sludge cakes. 

Layers of the spacers, which are fixed and moving rings, are secured in place by a tie rod. The inner diameters of the moving ings are slightly smaller than the outer diameter of the screw and their rings. Mobilized by the screw, it continuously cleans the sludge out of the gaps, therefore, preventing clogging.The running of the screw drives the moving ring to clean the gaps and avoid jam.

1.Force-water cocurrent

Force and water are in the same direction, making the free water comes out at the fastest speed.

2. Extension of deatering path

Not only ensuring the amount of time during the process of sludge dewatering, but also ensuring the continuous operation.

3.Moderate pressure

Maintain lowest energy consumption and mechanical wear while ensuring the sludge dewatering effect.

4.Thin-layer dewatering

Thinning the sludge to make the free water come out by going a shorest distance.

Thickening: When the shaft is driven by the screw, moving rings around the shaft move up and down relatively. Most water is pressed out from the thickening zone and fall  down to the filtrate tank for gravity. 

Dewatering: The thickened sludge moves forward continuously from the thickening zone towards the dewatering zone. With the  pitch of the screw shaft thread getting narrower and narrower, the pressure in the filter chamber increases higher and higher. In addition to the pressure generated by the back-pressure plate,  the sludge is greatly pressed and dryer sludge cakes produce.

Self-cleaning: The moving rings rotates continuously up and down under the pushing of the running screw shaft while the gaps between the fixed rings and moving rings are cleaned to prevent from clogging that happens frequently for traditional dewatering equipment.