China ISO/CE/SGS High Quality Sewage/Wastewater/Effluent/Black/Grey Water Treatment Plant Dehydrator Screw Refining Oil Press Slurry/Mud/Sludge Dewatering Machine

China ISO/CE/SGS High Quality Sewage/Wastewater/Effluent/Black/Grey Water Treatment Plant Dehydrator Screw Refining Oil Press Slurry/Mud/Sludge Dewatering Machine

Product Description


Product Description

Screw Press Sludge Dewatering Machine is suitable for sludge dewatering of large, medium and small sewage plants.  The dewatering machine replaces the traditional filter cloth and plate frame sludge dewatering method, reduces the investment cost and improves the treatment efficiency.  It is suitable for municipal sewage treatment project and sludge dewatering treatment in food processing, printing and dyeing, paper making, pharmaceutical, leather and other industries, especially for slaughtering, petrochemical oily sludge dewatering treatment.  

Working principle
The equipment is mainly composed of frame, screw shaft, moving ring, static ring, separation ring, filtrate collecting tank, flocculating mixer, drive reducer, electrical control box and so on.  
Basic working process:
1. The sludge is transported to the flocculation reaction tank through the sludge pump.  
2. Sludge and flocculant (PAM) mixed in the flocculation tank, through the blender for full mixing, into a large flocculant.  
3. The solid-liquid mixture enters the spiral cavity through the pipe gravity flow.  
4. Through the reducer to drive the spiral axis rotation, the sludge from the concentration part of gravity concentration, while moving to the direction of the dehydration part.  
5. Filtrate flows out from the gap between the moving ring and the fixed ring, further pressurized and dehydrated by adjusting the gap of the back pressure plate located at the mud discharge mouth, and finally discharged mud cake.


1. Good at treating oily sludge: compared with the traditional belt and plate and frame sludge dehydrator, even the oily sludge can be easily treated.  
2. Not easy to plug: unique dynamic and static ring filter joint structure, with self-cleaning function, so that the equipment is not easy to plug.  
3. Compact design, space saving, convenient installation, small footprint.  
4. Lightweight and durable: the body is almost all made of stainless steel, the replacement parts are only spiral shaft and swimming ring, long service life, durable.  
5. Simple operation and maintenance: automatic operation can be realized through various induction devices. At the same time, fewer daily maintenance items and simple maintenance operations

Product Parameters

Model Dried Sludge Standard Capacity
Flow Load
 Discharge Height(mm) Size N.W
Low Concentration High Concentration 2000
10000 mg/L 20000 mg/L 30000 mg/L 50000 mg/L Longth
QDLX-131 ~4 ~26 ~2.0 ~0.6 ~0.5 ~0.87 ~0.4 250 2000 785 1040 250
QDLX-132 ~8 ~52 ~4.0 ~1.2 ~1.0 ~1.73 ~0.8 250 2000 950 1040 450
QDLX-201 ~8 ~52 ~4.0 ~1.2 ~1.0 ~1.73 ~0.8 350 2510 900 1300 420
QDLX-202 ~16 ~104 ~8.0 ~2.4 ~2.0 ~3.47 ~1.6 350 2560 1050 1300 550
QDLX-301 ~20 ~130 ~10 ~3.0 ~2.5 ~4.33 ~2.0 530 3330 1005 1760 900
QDLX-302 ~40 ~260 ~20 ~6.0 ~5.0 ~8.67 ~4.0 530 3530 1290 1760 1350
QDLX-303 ~60 ~390 ~30 ~9.0 ~7.5 ~13 ~6.0 530 3680 1620 1760 1900
QDLX-351 ~40 ~260 ~20 ~6.0 ~5.0 ~8.67 ~4.0 570 4005 1100 2130 1100
QDLX-352 ~80 ~520 ~40 ~12 ~10 ~17.3 ~8.0 570 4390 1650 2130 2100
QDLX-353 ~120 ~780 ~60 ~18 ~15 ~26 ~12 570 4520 1980 2130 3100
QDLX-354 ~160 ~1040 ~80 ~24 ~20 ~34.68 ~16 570 4750 2715 2130 4100
QDLX-402 ~135 ~884 ~67.5 ~20 ~17 ~29.5 ~13.6 660 4960 1760 2100 3500
QDLX-403 ~200 ~1326 ~100 ~30 ~25.5 ~44.2 ~20.4 660 5010 2535 2100 5500
QDLX-404 ~266 ~1768 ~133 ~40 ~34 ~58.9 ~27.2 660 5160 3160 2100 7000

Model Reference
Wet sludge treating capacity=dries sludge treating capacity ÷SS(DS means dries sludge)
The figures are only for reference.According to the different characteristics of sludge, there will be deviation in the amount of treatment, please consult our company when you select the type for details .

Company Profile

Qingdao EVU Environmental and Engineering Equipment Co., Ltd. is established in 1999,it is one of scientific research design, equipment manufacture, installation, commissioning and training services as one integrated technology-oriented enterprises in water treatment industry. It is holding by Qingdao Spark Textile Machine Co., Ltd which is a national Spark Industrial Group, national second-level and large-scale comprehensive enterprise group in China.
We use the advanced technology and equipment over the world. Our main productions: Integrated Sewage Treatment Equipment, MBR Sewage Treatment Equipment(MBR), Electrocoagulation Sewage Treatment Plant(EC Plant), Reverse Osmosis Filteration Equipment(RO System), Dissolved Air Flotation Machine(DAF), Cavitation air Flotation Machine(CAF),  Aerator, Screw Press Sludge Dewatering Machine, Automatic Chemical Dissolved and Dosing machine, Sludge Scraper, Slag Scraper, The micro bubble generator, USAB anaerobic reactor, Bar Screen, Sand Filter and so on series products. 
We based on "technological development, pollution remediation, wholeheartedly for customer services". We hope to cooperate with all customers from all over the world and build a better world together.

Our Company

Our Customers

 Our Products 


Q1:Are you a factory or trading company?

We are a real manufacturer who can offer you both the most competitive price and top quality products.

Q2:Where is your factory located? How can I visit there?

Our factory is located in Qingdao City Shandong Province, All our clients, from home or abroad, are warmly welcome to visit us!

Q3:Can you put my company brand (logo) on the products?

Yes,we support OEM/ODM service,the customize process as follows:
1.Customers put forward personalized customization requirements.
2.Our engineer draw the design draft.
3.Customer confirm the design draft. 
4.Factory start to produce shipment. 

Q4:How to select right model?

You can tell us what you need, and we can help you choose the Model.Basic informations as follows:
Wastewater type : Industry wastewater, Domestic wastewater, food wastewater or others)
Capacity:m³/Day or m³/Hour?

Raw water quality: SS, Oil & Grease &Fat & FOG, PH,BOD,COD content?

Output water quality standard,for discharge or reuse?
Local voltage and frequency?

Q5: What is your MOQ?

Normally, our MOQ is 1 set.

Q6:What is the payment term ?

TT and L/C are acceptable and TT will be more appreciated, 30% deposit, 70% balance payment before shipment.

Q7: We haven’t imported before, can you ship the goods to our warehouse?

Yes. Although our normal trade term is EXW, FOB, CIF, we can also arrange logistics to your warehouse.

Q8:What is the delivery time of your factory?

5-10 days for general series products, meanwhile, batches products & customized products would need 15-30 days based on different situations.Contact us for the exact time.

Q9:How do you ensure the quality of your products?

Generally, our equipment are the most durable type in the industry, this is also the feature of the label impression for most of our customers at home or abroad.Skilled workers and strict quality control system can ensure every machine with best working performance.

Q10:How to assemble the equipment once we received it?

The CAD install instruction, assembly procedure and project case will be provided.,Of course our skilled installation engineers would go to your country and install the equipment if needed.

Q11: What is your product warranty ?After sales service?

The warranty is 12 months while the lifetime is 10-15 years under good maintenance.It is durable and anti-corrosion.
Provide equipment certification and installation operating instructions.
Provide one-year spare parts.
Provide technical advisory services.
Provide guidance staff for installation and commissioning.

Parameters Table

Model NO.

Low Concentration
4~266 Kg/H

High Concentration
26~1768 Kg/H

Flow Load
2.0~27.2 M³/H

2000*785*1040m~5160*3160*2100m or Customized

Discharge Height

SS304 /SS316L/CS/FRP

220V/ 380V/ Customerized


Dried Sludge Treating Capacity

Net Weight

Working Weight

24h Automatic

Sludge Concentratiion Range


Transport Package
Starderd Export Package




HS Code

Production Capacity