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Quick Details

  • Place of Origin: Henan, China (Mainland)
  • Brand Name: Greenkey
  • Model Number: Customized
  • Condition: New
  • Model number: DL
  • Material: Stainless Steel/carbon steel
  • Function: Solid-liquid Separation
  • Operation: Automatic Running
  • Certification: ISO9001, ISO14001
  • Color: Natural or Customized
  • Type: screw press
  • warranty: 12 months
  • Application: Waste water treatment

Packaging & Delivery

Packaging Details Standard export packaged or according to the customers requirement.
Delivery Time 15 to 25 working days after received the Deposit

screw filter press


 Multi-plate screw press can be widely used in municipal waste water treatment engineering as well as the industrial wastewater treatment systems such as petrochemical processing, light industry, chemical fiber, paper-making, pharmacy and leather etc. The multi-plate screw press, as proven by the practical applications, can help to make considerable economic and social benefits for customers.


Working principle: 


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.





1. Special pre-concentrating device, wide feed solids concentration: 2000mg/L-50000mg/L

2. Fixed/moving rings replacing filter cloths, self-cleaning, clogging-free

3. Low-speed rotating, low noise, energy saving - only 1/80 of belt filter presses and 1/12 of centrifuges

4. Full-automatic control, simple operation and management




Applocation cases:

  1. Petrochemical and oily slurries
  2. Industrial laundries
  3. Tanneries and textile waste
  4. Paint sludge
  5. Effluent treatment plants
  6. Municipal water treatment plant sludge – aluminum and lime
  7. Municipal waste water treatment plant sludge-activated
  8. Chemical solid-liquid separation processes
  9. De-watering and washing of pigments and dyestuffs
  10. Environmental Remediation
  11. Corrosive, acidic, alkaline slurry filtration




















About us:

GRKY was founded in 1970, in 1980 GRKY started to specialize in the production of environmentally friendly water treatment equipment and there was a joint venture between GRKY and the U.S. company-Westech (Western technology) in 2015. GRKY is the former State Ministry of Construction, the Ministry of Machinery Industry sentinel production of environmentally friendly water treatment machinery and equipment of professional manufacturer. Executive director unit of China Environmental Protection Industry Association, Vice chairman unit of Henan Industrial Association. In 1996 the State Environmental Protection Administration awarded the "advanced enterprise" and "advanced science and technology enterprises". China's environmental protection industry backbone enterprises for 15 consecutive years (2000--2015), National High-Tech Enterprise, ISO9001 quality system certification enterprise, ISO14001 environmental system certification enterprise, OHSAS18001 health system certification enterprise, Henan “respect the contract and keep promise” enterprise, National "AAA" credit-class enterprise, Henan quality integrity AAA enterprise, the top ten environmental protection enterprise in Henan Province, Henan Province focus on nurturing equipment manufacturing enterprise, Henan famous brand. Henan water treatment equipment engineering technology research center is located in GRKY.

Our head office is located in central China's electricity business port in Zhengzhou city, Henan province and has excellent office conditions. Company currently employees 1550 staffs (including branch) which has 165 senior technical staffs and 332 intermediate technical staffs.


1. All-around Pre-sale Technical Support
2. Strict Quality Control Manufacturing
3. Professional In the sale of Services
4. Professional After-Sales Service Team: Six Experienced Engineers, The Equipment Is Expanding
5. Installation Support: we can organize engineers to install the machines in factorys of the client,
6. Maintenance: Response will be given within 24 hours once customers tell us any past a malfunction, we can also arrange engineers to your factory to maintain the machines.


Honor certificates:


Factory scan:




Customers visit  factory:


Our team:



 Email: judy(@)greenky.cn

 Skype: thirza186

Whatsapp: 0086-18337879228

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