Product Overview

The screw press sludge dewatering machine is a new-generation, high-efficiency solid-liquid separation equipment designed for municipal sewage and industrial wastewater sludge treatment. Adopting advancedscrew extrusion dewatering principle, the equipment realizes continuous thickening, squeezing and dewateringof sludge through the gradual pressure change formed by variable-diameter screw shaft and variable-pitchstructure, combined with the micro-gap filtration of floating and fixed ring groups.

Different from traditional belt filter presses and plate frame presses, this screw dewatering machinefeaturesnon-clogging, low-speed operation, full automation and low energy consumption. It canstably treat low-concentration, high-water-content and oily sludge that are difficult to process by traditionalequipment, realizing efficient sludge reduction and meeting environmental discharge and sludge resource
utilization standards.

Working Principle

The whole dewatering process is divided into two core stages: thickening zone and squeezing zone, realizing fully enclosed continuous operation:

Step 1: Sludge Thickening After fully mixed with flocculant, the flocculated sludge enters the thickening zone. Free water in the sludge is quickly filtered out through the gaps between fixed rings and floating rings under the action of gravity, which preliminarily reduces sludge moisture content and improves sludge concentration.

Step 2: Squeeze Dewatering With the low-speed rotation (0.1-1rpm) of the stainless steel screw shaft, the sludge is continuously pushed forward. As the screw pitch decreases and the shaft diameter increases, the internal pressure rises gradually. Combined with the pneumatic counter-pressure device at the discharge end, strong extrusion force is formed to squeeze out the bound water in the sludge, finally forming dry sludge cake for discharge.

Self-cleaning System The screw shaft is equipped with integrated scrapers, which automatically clean the inner wall of the filter ring with each rotation. The independent dual cleaning device cleans the thickening zone and squeezing zone separately, effectively avoiding filter hole blockage and ensuring long-term stable dewatering efficiency without manual cleaning.

Core Advantages

Efficient Dewatering & Stable Performance
Energy-Saving & Low Operating Cost
Non-Clogging & Easy Maintenance
Fully Automatic & Safe Operation
Compact Structure & Wide Adaptability

Technical Parameters

Application Scenarios

This screw press sludge dewatering machine is suitable for almost all sludge dewatering and reduction treatment scenarios, widely used in various industries:

Municipal Sewage Treatment: Domestic sewage sludge, municipal pipe network sludge, sewage plant residual sludge

Industrial Wastewater Treatment: Printing and dyeing, papermaking, chemical, pharmaceutical, electroplating sludge

Food & Beverage Industry: Sludge from food processing, aquaculture, slaughter and processing wastewater

Environmental Protection & Others: Construction mud, river and lake silt, kitchen waste slurry, oil-containing sludge

Why Choose a Screw Press Sludge Dewatering Machine?

Low Energy Consumption

The screw shaft rotates at very low speed, typically requiring much less power than centrifuges, helping reduce operating costs.

Fully Automatic Operation

PLC automatic control allows continuous sludge feeding, flocculation, dewatering, discharge, and cleaning with minimal operator intervention.

Self-Cleaning Anti-Clogging Design

Moving and fixed rings continuously clean each other during operation, preventing clogging without frequent manual washing.

Compact Footprint

The integrated design requires less installation space and is ideal for upgrading existing wastewater treatment facilities.

Low Maintenance

Few moving parts reduce mechanical wear and maintenance costs while extending equipment life.

Pre-sale&After-sale

Inquiry and consulting support
3D design
Sampling check
Factory visiting
Timely reply to information

Installation instruction
Operation demonstration
Technical support
Video technical support

Qingdao Linzhen Environmental

Qingdao Linzhen Environment Project Co., Ltd. was set up in 1988, located inhuangdao District Qingdao City, with a workshop building area of 36000 m2 and morethan 130 kinds of treating machinery. The company has 360 staff member workers,including 72 engineers and technicians. Since the establishment, we are always com-mitted to environmental protection which includes environmental protection equipment design and fabrication, water treatment technological development, engineering con-struction and technical service, etc

Our waste water treatment plant have export to many countries, such as America,  Australia, Mexico, Russia, Saudi Arabia, Peru, Columbia, Vietnam, Thailand, Philip-pines, Malaysia, Indonesia, Nigeria, India Chad, Kenya, Iraq, Sudan etc. With goodquality, competitive prices and advanced techniques, we have won a good reputationamong customers. In order to supply good after-sale service, we have set up ourbranch company in America, Malaysia, Australia, Philippines etc. Clients can easily toget the spare parts. With more than 10 years experiences, oversea install operatingteam can supply you best solution with most reliable technology, if you have any prob-lem in waste water industry, please contact us.The company is determined to set up the world environmental protection industrybrand, for improve the human work, living environment quality, human and the envi-ronment harmonious coexistence all the strength. We are looking forward to establish-ing relationships with you in the near future.

FAQ

How to buy your idea products?
A: You can provide us your water sources, water quality, flow rate and ground area (connect us for more details).

How to pay?
A: TT and L/C are acceptable and TT will be more appreciated. 30% deposit before producing, 70% balance before loading by TT.

What is the delivery time?
A: It depends on order quantities. Generally speaking, the delivery time will be within 4 to 6 weeks.

How to pack the products?
A: We use standard package. If you have special package requirements, we will pack as required, but the fees will be paid by customers.

How to keep your equipments from corrosion?
A: We use the world-famous paint, like SigmaCoatings, PainBow, etc. What’s more, we paint strictly according to the standard process.

How do you manufacture your equipment?
A: Our machining technology includes laser/plasma cutting, automatic welding, CNC cutting and bending.

How to install after the equipments arriving destination?
A: We will provide detailed illustrations to you. If it is necessary, we will send technicians to help you. However, the visa fee, air tickets, accommodation, wages will be paid by buyers.