Sludge drying machine, screw press dehydrator for wastewater treatment

This screw press dehydrator is integrating together with auto-control cabinet, sludge thickening & dewatering body and liquid collection tank. So the high efficiency flocculation, continuous sludge thicking & dewatering and liquid collection can be automatically completed all- in- one. The colloect liquid will be reflux or emissions finally. Widely used in municipal sewage petro-refining, leather making, printing and dyeing paper, coal;ofocation dressing, biochemical pharmacy, steel pickling and chemical sugar, food processing etc.

Overall structure as following.

It consits of filtrating body, flocculation reactor, mixed for flocculation reactor, V-type metering tank, water level regulator, level electrode, electric control cabinet, cleaning electric valve, spray planes, filtrate collwction tank and so on.

screw press dehydrator working principle

The conditioned sludge flow into the filter chamber from the flocculation tank and is pushed forward to the discharge end, with the gap between the thread of the shaft is getting more and more narrow, the pressure on the sludge is getting higher and higher, then the water is separated from the sludge and flows out from the gap between the moving and the fixed plates. The movement of the moving plates and the fixed plates cleans the gap between them and prevent the machine from clog, the filterd sludge cakes are pushed forward by the shaft and finally discharged from the end.

screw press dehydrator advantges:

1. Save operating costs (water-saving artificial Province)

The integration of the overall design, compact design, substantial savings in operating costs. Low speed screw extrusion technology, so that power consumption is significantly low; the device is not blocked, greatly reducing the wash water; a significant reduction in 24 hours unmanned automatic operation, labor costs. Thus, the device is also truly in line with the national policy of energy saving new equipment.

2. Save the project investment (without construction thickener, saving construction costs)

Preparation sludge concentration function, aerobic sludge aeration tanks to deal directly, without concentration and storage units, sewage treatment facilities to reduce overall footprint and construction costs.

3. For a wide range of industries (petroleum, chemicals, leather, pharmaceutical, paper, printing and dyeing, municipal, etc.)

Unique dehydration principle, making the device suitable for high and low concentration sludge from 2000mg / l on, better for oily sludge dewatering.

4. The device not easy to plug (unique structure, without a lot of water rinse)

Unique moving plates, the fixed plates structure makes the device not easy to plug, no need to prevent clogging of the filter slit extensive cleaning, rinse thoroughly to reduce water consumption, reduce the burden on the inner loop, to solve the traditional dewatering equipment to the enterprise blocked annoyance.

5. Continuous automatic operation (24 hours of unattended continuous operation)

From transport sludge into the liquid, sludge cake discharge are controlled automatically by the cabinet, with the bubble medicine machine, into the mud pumps, dosing pumps, etc. linkage, without personnel to operate the equipment, operation will not clog filtered away migraine or other phenomena affect the safety of the process, routine maintenance is simple, for 24 hours of continuous unattended operation. First realized the true sense of the sludge dewatering continuous automatic operation.

6. No secondary pollution (no noise, no secondary water pollution, odor pollution)

Screw shaft rotational speed of about 2 to 3 r / min, no vibration, noise is very small; it has a self-cleaning function laminations, clogging does not occur, only a small amount of water to wash, no secondary water pollution; plus sludge run in such a slow operation, no odor diffusion, thereby creating a very good operating environment!

7. Durable body (body all made of stainless steel)

Due to the direct mechanical dewatering extrusion without rollers and other large body, so the machine designed to be very lightweight; the body almost entirely made of stainless steel, replacement parts and only the helical axis swimming ring, long life durability.

8. Improve Phosphorus

Dewatering sludge under aerobic conditions, it does not occur conventional sludge thickening tank or storage tank under anoxic or anaerobic conditions sludge phosphorus release, so as to enhance phosphorus removal function of the whole system with sewage treatment.

screw press dehydrator main technical parameters

 Exported wooden package.

1. We have professional workmate on line to provide you comprehensive easy-understanding & detail information & technical data about the machine you interested, and solve your confusions or questions about the machine 

2. To give you the best suitable model based on your requirement.

3. Arrange the visit schedule if you want to visit our factory.

4. If you need, our technical engineer will go to your worksite for installation & operation test & training your workers.

Zhengzhou Toper is the leading supplier of industrial equipment in China, and also the professional exporter and service provider of filter and separation equipment. Since 2006, Zhengzhou Toper has supplied products and service to over 200 enterprises of 30 more countries and areas excluding China mainland. Besides screw type sludge dehydrator, also we supply the following machinery:

1. Common chamber filter press

2. Membrane filter press, have the function of second-squeeze, to give you a lower cake moisture.

3. Stainless steel filter press, hot sale food, medicine, and chemistry industry.

4. Cast iron filter press, which can bear high temperature slurry like 300 ℃ or higher.

5. Round plate filter press, the filtration pressure can be 1.5Mpa, hot sale in kaolin, clay, ceramic and so on slurry.

6. Belt filter press, continuous working and better used for human waste and so on.

7. Bag filter and other smaller filters.

8. Filter plate, filter cloths and other accessories.

How to contact us:

1. Company name: Zhengzhou Toper Industrial Equipment Co., Ltd.

2. Address: No. 101 Nanyang Road, Zhengzhou City, Henan Province, China.

3. Website:

4. Office telephone: 0086-371-8608-1678

5. Fax: 0086-371-6372-3013

6. Mobile/whatsapp: 0086-150-9307-0185

7. Skype: Joyceechen1009

8. Email: trade(at)