Multi-disc Screw Press Sludge Dewatering Machine

Multi-disc Screw Press Sludge Dewatering Machine

The screw sludge press machine is integrating with auto control cabinet, sludge thickening & dewatering body liquid collection tank. Therefore, the high efficiency flocculation, continuous sludge concentration, dewatering and filtrate collection can be automatically completed all in one, the collected liquid will be reflux or emissions finally.

Product Details

Description

The screw sludge press machine is integrating with auto control cabinet, sludge thickening & dewatering body liquid collection tank. Therefore, the high efficiency flocculation, continuous sludge concentration, dewatering and filtrate collection can be automatically completed all in one, the collected liquid will be reflux or emissions finally.

 

Working process

1. Confirm which kind flocculant will be used and confirm the adding ratio.

2. Before take on dewatering,please infuse flocculant,dilution of PAM is 500-1000 times.Sludge will be taken to mixed flocculation tank by sludge pump and PAM liquid will be sent to this tank by chemical feed pump too.Then mixer will mix them together,until from alumen floc.Then sludge will taken on dewatering process, and filter liquid will be squeezed out and flow back to raw water tank.

3. After concentrate,sludge will be pushed forward at the force of screw axis,at the influence of all kinds of force,sludge will take on dewatering in squeeze process,the filter liquid have high soild content,so this liquid will flow back to mixed flocculation tank to taken on dewatering again.

4. After dewatering,mud cake will be discharged from outlet,they will be send to converyor and taken to tippers,then they will be sent to dry field.

 

Dewatering principle

1. Concentrate: When the screw axis move,sludge will be taken to forward and the pitch of the screw will become lessen,then the volume become lessen,so the pressure will become largen,so water will be squeezed out. Under the influence of gravity,water will flow out from the space of movable plate filter.

2. Dewatering: after concentrate,sludge will move forword with the push of screw axis,along the direction of mud cake moving,the pitch of screw aixs become smaller,the space of fixed and movable spacer become smaller too,The volume of screw cavity become lessen,then the pressure become largen at the influence of back plate ,so the water in the sludge be pushed out,the soild content of mud cake become largen.After this process,water will be separated out from sludge.

3. Self-cleaning: the relative movement between fixed ring and movable ring can avoid block effectively.So this machine can realize self-cleaning,this is a big advantage than traditional dewatering machine.

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Advantages of Sludge Press Machine

Clog-free

Due to rotation of helical axis, the moving rings begin detaching from the fixed rings while continuously starting the self-cleaning process. As a result, the ubiquitous clogging is avoided. Therefore, it can handle oily sludge without any trouble while separating the water from the sludge easily. In addition, there is no need to add large quantity of flushing water and there is no odor and no secondary pollution during the dewatering process.

Fully Automatic Control

There are no easily blocked pieces such as belt and filtration pore in Multi-Disk Screw Press. Combining with the auto control system, the machine runs very safely and simply and can be programmed according to the requirement of the users. It can operate automatically for 24 hours, unmanned.

Save Running Cost

Multi-Disk Screw Press works by the machine's internal pressure and needs no large scale integrations like rollers. It saves energy and water and has very minimal noise because of low running speed (2-4 r/min). The average unit power consumption is only 0.1-0.01kwh/kg-DS (1/8 of Belt Press and 1/20 of Centrifuge), and can greatly reduce the running cost of wastewater treatment system.

Without secondary pollution

The screw shaft rotational speed about 2-3r/min, no vibration and noise is very small ; The laminated with self - cleaning function, plugging does not occur, only a small amount of water washing, without secondary pollution, and sludge at such a slow running under the operating condition, the smell does not spread, thereby creating a great work environment!

Contactless, Wear Free Structure Design

Multi-Disk Screw Press uses the contactless wear free structure between the disks and screw shafts, thus the service life of the Screw shafts and the rings will be greatly extended. The treatment capacity of equipment and processing effects can be improved in combination with other optimization design.

Decrease Capital Investment

Multi-Disk Screw Press can treat sludge in aeration tank and secondary sedimentation tank without setting sludge thickeners. Therefore, this can decrease the total investment, avoid phosphorus release from the sludge thickeners and sludge storage tanks and enhance phosphorus removal effect of the wastewater treatment system.

High Resistance to Oily Sludge

Promote the phosphorus removal capability Dewatering sludge under aerobic conditions, it does not occur phosphorus release, so as to enhance phosphorus removal function of the whole sewage treatment system.

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