Product Overview
The Linzhen Multi-plate Screw Press Sludge Dewatering Machine (Model 302) represents a breakthrough in next-generation solid-liquid separation technology, precision-engineered by Qingdao Linzhen Environment Project Co., Ltd. for municipal sewage treatment plants and industrial wastewater treatment facilities worldwide. This advanced screw-type sludge dehydrator significantly out performs conventional belt presses, centrifuges, and plate-and-frame filter presses across all operational parameters. Utilizing proprietary screw extrusion dewatering technology, the Model 302 achieves continuous thickening, squeezing, and dewatering through a sophisticated variable-diameter screw shaft and variable-pitch structural design, combined with precision micro-gap filtration utilizing stacked fixed ring and floating ring assemblies.
Unlike traditional sludge dewatering equipment that struggles with clogging, high energy consumption, and complex maintenance requirements, the Linzhen screw dewatering machine operates at ultra-low speed with full PLC automation, delivering exceptional energy efficiency while reliably processing low-concentration, high-moisture-content, and oily sludge matrices that conventional systems cannot handle effectively. The integrated design ensures substantial sludge volume reduction, enabling treatment facilities to meet stringent environmental discharge regulations while supporting sludge resource utilization and recycling initiatives.
Working Principle
The dewatering process operates through two seamlessly integrated functional stages within a fully enclosed continuous processing system, ensuring odor containment and operational safety.
Stage 1: Sludge Thickening Zone
After thorough mixing with polymer flocculant in the integrated stirring device, the conditioned sludge enters the thickening zone. Free water within the sludge matrix rapidly filters through the precisely engineered gaps between stationary fixed rings and dynamically moving floating rings under the natural action of gravity. This preliminary filtration stage significantly reduces initial moisture content while concentrating the sludge solids, preparing the material for efficient mechanical dewatering.
Stage 2: Squeeze Dewatering Zone
The concentrated sludge advances continuously into the squeezing zone where the precision-manufactured stainless steel screw shaft rotates at controlled ultra-low speed (0.1-1 rpm). As the sludge progresses along the shaft, the screw pitch progressively narrows while the shaft diameter increases, creating a gradually intensifying compression environment within the filter chamber. This geometric design generates increasing internal pressure that mechanically expels interstitial and bound water from the sludge structure. At the discharge terminus, a pneumatic counter-pressure plate applies additional calibrated resistance, forming strong extrusion force that produces consistently dry sludge cake with optimal solids content for discharge.
Integrated Self-Cleaning System
The screw shaft incorporates precision-engineered integrated scrapers that automatically clean the inner wall surfaces of the filter rings with each rotation cycle. Independent dual cleaning devices separately service the thickening zone and squeezing zone, effectively preventing filter gap blockage from fibrous materials, grease accumulation, or mineral scaling. This autonomous cleaning functionality ensures sustained dewatering efficiency over extended operational periods without requiring manual cleaning intervention.
Core Advantages
Non-Clogging & Self-Cleaning Architecture
The revolutionary moving ring and fixed ring configuration creates continuous dynamic self-cleaning action during normal operation. The movable ring assembly replaces traditional disposable filter cloth media, completely eliminating clogging issues while demonstrating exceptional capability handling oily sludge and grease-laden materials that would rapidly compromise conventional belt press or filter press systems.
Exceptional Energy Efficiency
The screw shaft operates at very low rotational speed, typically requiring substantially less electrical power than high-speed centrifuge alternatives or continuously running belt press systems. This fundamental design advantage translates to dramatically reduced electricity consumption and lower overall operating expenses.
Fully Automated PLC Control
Advanced programmable logic controller automation enables continuous operation cycles encompassing sludge feeding, polymer flocculation, mechanical dewatering, cake discharge, and self-cleaning sequences with minimal operator supervision requirements.
Compact Structural Design
The integrated monobloc structural configuration occupies minimal installation footprint, making it particularly suitable for retrofitting existing wastewater treatment facilities or installations where spatial constraints limit equipment options.
Versatile Application Capability
The equipment effectively processes extraordinarily diverse sludge types including municipal sewage biosolids, industrial wastewater residues from printing, dyeing, papermaking, chemical processing, pharmaceutical manufacturing, and electroplating operations, food processing byproducts, construction drilling mud, river and reservoir sediment, and challenging oil-containing sludge.
Superior Durability
Manufactured from corrosion-resistant SUS304 stainless steel with precision-engineered gearbox, gear transmission, and motor drive assemblies, the machine withstands aggressive operational environments. Fewer moving parts compared to alternative technologies reduce mechanical wear and maintenance frequency while extending operational service life.
Technical Specifications
| Attribute |
Specification |
| Product Name |
Multi-plate Screw Press Sludge Dewatering Machine |
| Brand |
Linzhen |
| Model |
302 |
| Primary Function |
Sludge Dewatering & Thickening |
| Application Scope |
Municipal & Industrial Wastewater Sludge Treatment |
| Processing Capacity |
Up to 3,000 L/h |
| Operation Mode |
Fully Automatic (PLC Control) |
| Construction Material |
SUS304 Stainless Steel |
| Core Components |
Precision Gearbox, Hardened Gear Drive, Electric Motor, Control Engine |
| Screw Shaft Speed |
0.1-1 rpm (Variable) |
| Electrical Supply |
380V / Customizable to Local Standards |
| Approximate Weight |
1,000 kg |
| Quality Certification |
CE Marking, ISO9001 Quality Management |
| Standard Warranty |
1 Year |
| After-Sales Support |
Video Technical Support, Remote Diagnostics, On-site Service Available |
| Minimum Order Quantity |
1 Set |
| Customization |
Available per Client Drawings and Specifications |
Application Scenarios
Municipal Sewage Treatment Facilities: The Model 302 efficiently processes domestic sewage sludge, municipal pipe network cleaning residues, wastewater treatment plant residual activated sludge, and septic tank pumpage, enabling municipalities to achieve required solids content for landfill disposal or agricultural utilization.
Industrial Wastewater Treatment Plants: Specialized applications include sludge dewatering from textile printing and dyeing facilities, pulp and papermaking mills, petrochemical processing plants, pharmaceutical manufacturing operations, metal electroplating facilities, leather tanning processors, and electronics manufacturing cleanrooms.
Food & Beverage Processing Industry: Effective treatment of organic residues from food production facilities, intensive aquaculture operations, poultry and livestock slaughterhouse wastewater, dairy processing plants, brewing and distillation facilities, and vegetable oil extraction operations.
Environmental Remediation & Specialized Projects: Construction site drilling mud dewatering, river and lake sediment remediation projects, landfill leachate treatment residuals, kitchen waste and food scrap slurry processing, oil-containing sludge from petroleum refineries and automotive service facilities, and hazardous waste stabilization preprocessing.
About Qingdao Linzhen Environment Project Co., Ltd.
Qingdao Linzhen Environment Project Co., Ltd., founded in 1988 and strategically headquartered in Huangdao District, Qingdao City, China, operates a state-of-the-art professional environmental protection equipment manufacturing complex encompassing 12,000 square meters of dedicated production area and 30,000 square meters of total building infrastructure. The facility serves as a specialized production base for advanced water treatment and sludge processing equipment serving global markets.
The company maintains an experienced multidisciplinary engineering team of 90 dedicated professionals, including 6 specialized engineering and technical personnel with advanced expertise in mechanical design, process engineering, and automation control systems. Our comprehensive core business portfolio encompasses environmental protection equipment research, design, and precision manufacturing; sewage and wastewater treatment technology development; engineering construction management; and integrated technical service provision.
With fully independent professional research and development capabilities, Qingdao Linzhen provides extensive customized equipment design and production services tailored to specific project requirements, processing conditions, and regulatory frameworks. Our expanding global commercial footprint includes established branches and strategically located local warehouses in Malaysia and the Philippines, enabling rapid response times and convenient after-sales service delivery throughout Southeast Asian markets. Complementing this regional network, overseas showrooms and authorized service centers in Australia and additional international locations support our comprehensive export operations spanning more than 50 countries across Asia, Europe, Africa, and South America.
Our sewage treatment equipment and sludge dewatering systems command significant market share in numerous regional markets worldwide, supported by competitive pricing structures, advanced manufacturing techniques incorporating laser cutting and CNC precision machining, and consistently reliable technology solutions. The company maintains rigorous quality management protocols certified to ISO9001 standards, ensuring every Multi-plate Screw Press Sludge Dewatering Machine meets exacting performance and durability criteria before international shipment.
Pre-Sale & After-Sale Service Commitment
Comprehensive Pre-Sale Support: Our technical sales team provides detailed inquiry response and application consulting, complimentary 3D equipment design and layout planning services, sampling verification and pilot testing coordination, factory inspection and production facility visiting arrangements, and prompt quotation documentation with competitive international pricing.
Dedicated After-Sale Support: Complete installation instruction manuals and technical documentation, operation demonstration videos and training materials, comprehensive technical support via telephone and email communication channels, video technical assistance for troubleshooting and maintenance guidance, on-site installation supervision and commissioning services available globally, and expedited spare parts procurement through our international branch warehouse network.
For customized sludge dewatering solutions, technical consultation, or quotation requests regarding your specific wastewater treatment project requirements, please contact Qingdao Linzhen Environment Project Co., Ltd. We are committed to establishing enduring international partnerships and delivering world-class environmental protection equipment that improves human working and living environments while promoting harmonious coexistence between industrial development and environmental sustainability.
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.
EN
Case Studies
Technical Downloads
Engineering
FAQ