Explore our high-performance manufacturing lineup, designed for advanced thermal concentration, sludge treatment, and waste heat recovery.
Built for handling highly scaling, viscous fluids and industrial effluents under extreme crystallization requirements.
Utilizes indirect steam heat exchange technology to process heavy starch and organic cake outputs with maximum thermal recovery.
Advanced multi-effect configurations tailored to drop utilities consumption across food, chemical, and waste management sectors.
High-speed gas suspension mechanism for instant moisture removal from light bulk materials and starches.
Integrates industrial waste streams to operate primary concentration systems, eliminating redundant heat generation costs.
Precision industrial milling equipment built to separate germs from starch components cleanly without cell-wall rupture.
Maintains a regulated low-oxygen drying environment to process volatile or explosive organic materials safely.
Fully compliant European market specification plant designed for continuous crystallizing and heavy solid concentration.
In modern municipal and industrial wastewater management, dewatering remains one of the most critical stages in the biosolids treatment loop. The CE Certified Sludge Dewatering Screw Press represents a fundamental engineering evolution, transitioning industrial sectors away from high-maintenance decanters and energy-intensive belt presses. Utilizing a slow-speed, dynamic filtration chamber comprised of alternating moving and fixed rings, this technology delivers continuous, non-clogging separation while consuming a fraction of the power of alternative dewatering models.
The liquid sludge flows directly into the mixing and flocculation tank, where organic polymers chemically coagulate the suspended solids. Once flocculated, the sludge transfers directly to the dynamic dewatering cylinder. Inside, the taper-designed screw shaft pushes forward, steadily decreasing the internal volume. As pressure builds against the exit back-pressure plate, filtrate escapes through the micro-gaps between the fixed and moving rings, discharging a dry cake from the outlet.
Unlike standard mesh filters or static screens, the moving rings are driven continuously by the eccentric rotation of the central screw shaft. This dynamic interaction creates a self-cleaning effect, completely preventing particles from clogging the filtration gap. Because the screw revolves at ultra-low speeds (typically 1 to 4 RPM), component abrasive wear is exceptionally low, vastly extending the operational lifespan compared to high-speed centrifuges.
Centrifugal and belt systems require substantial motive force, high hydraulic pump pressure, and continuous high-volume wash water. The screw press system eliminates these high utility requirements. Average energy consumption scales down to approximately 95% lower than decanter centrifuges of comparable throughput, allowing industrial operators to rapidly amortize initial capital expenditure.
Reliability in corrosive wastewater environments starts with premium metallurgy. Screw shafts are constructed using high-grade SUS304 or SUS316L stainless steel, precisely machined and welded with specialized tungsten carbide coating on the outer flights. This hardfacing layer provides a hardness level rating above HRC60, protecting the leading edges from abrasive components such as sand, fine grit, and crystallized mineral scale.
For project engineers, plant operators, and procurement managers in the European Economic Area (EEA) and global markets, CE Certification is not merely a regulatory tag—it is a critical validation of mechanical, electrical, and structural safety. Compliance with the following European Directives ensures that the dewatering system integrates seamlessly without exposing personnel to high-risk industrial hazards:
Analyzing key operational and capital efficiency parameters across common industrial dewatering configurations.
| Performance Criteria | Multi-Plate Screw Press (CE Certified) | Decanter Centrifuge | Belt Filter Press |
|---|---|---|---|
| Power Consumption | Ultra-Low (0.3 - 2.2 kW) | High (15 - 75 kW) | Medium (3 - 15 kW) |
| Wash Water Usage | Minimal (Self-cleaning cycle) | Zero to low internal rinse | High (Requires continuous belt washing) |
| Operating Speed | 1 - 4 RPM | 2,500 - 4,500 RPM | Linear belt movement |
| Noise & Vibration Levels | < 60 dB (Virtually silent) | > 85 dB (Requires acoustic housing) | < 75 dB |
| Oily Sludge Capability | Excellent (Moving rings handle grease easily) | Moderate (prone to rapid wear/imbalance) | Poor (Blinds filter belts immediately) |
| Maintenance Interval | > 25,000 Operating Hours | 8,000 - 12,000 Hours (high wear) | Frequent belt replacements |
Located in Yixing City, Jiangsu Province—the premier industrial hub for environmental technology in China—Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. (established in 1992) possesses the infrastructure and tooling required to build highly engineered process systems. Spanning over 54,000 square meters of production space, our facilities house state-of-the-art plate laser cutters, automated structural welding stations, and specialized machining lines for high-precision components.
Our domestic supply chain integration allows us to procure certified raw alloys directly from top-tier mills, execute precise thermal treatments for fatigue reduction, and conduct rigorous quality assurance testing under one roof. By combining massive manufacturing scale with ASME "U" Stamp credentials and ISO9001 compliance, Zongheng bridges the gap between cost-competitive production and high-integrity European engineering standards.
Established as Yixing Yangxi Light Industrial Machinery Factory, focusing on manufacturing heavy equipment for starch separation and light industrial processes.
Achieved ISO9001 Quality Management System certification, formalizing quality control across all core engineering departments.
Recognized as a Jiangsu Provincial High-Tech Enterprise, marking accelerated research and development in thermal concentration, evaporation, and mechanical drying systems.
Acquired the prestigious ASME "U" Stamp authorization, permitting design and export of certified code pressure vessels globally.
Operating from a unified 54,000 m² facility with a dedicated team of over 20 professional design engineers, delivering tailored zero-waste systems worldwide.
From municipal biosolids concentration to zero-discharge loops in heavy industry, our screw presses operate across diverse process streams.
Concentrates thin municipal biological activated sludge (from 0.5% concentration) to a dry stackable cake exceeding 20% dry solids content, reducing hauling costs.
Processes oily sludge containing high grease, protein, and fat content from washdowns. Dynamic ring design prevents oil binding on filtration surfaces.
Equipped with explosion-proof electrics, handling inorganic chemical residues and spent catalyst cakes within complex refinery recovery processes.
The international environmental sector is witnessing a major transformation driven by digital integration (Industry 4.0) and carbon-neutral targets. Modern sludge management plants no longer treat dewatering as an isolated operation. Instead, they integrate it within comprehensive energy-recovery loops, where dewatered cake is processed through Zongheng Tube Bundle Dryers or converted to biofuel.
Historically, operator error in polymer preparation resulted in either excessive chemical usage or poorly flocculated sludge, causing filtration failure. Modern installations feature feedback loops utilizing turbidity sensors and flowmeters. These systems communicate with the PLC to dynamically alter polymer dosage relative to incoming suspended solids fluctuation, cutting operating costs by up to 25%.
By transitioning from a uniform screw pitch to a progressively compressing profile, modern screw presses apply a gradual, highly uniform mechanical compression force. This prevents shear stress on delicate floc particles, maintaining maximum solids capture rates while preserving mechanical integrity under peak hydraulic loading.
Essential compliance checks to secure reliable, long-term performance from international suppliers.
When purchasing heavy solid-liquid separation machinery, ensuring mechanical performance prior to shipment is vital. A rigorous FAT protocol should check:
Jiangsu Zongheng provides comprehensive documentation packages, including material mill certificates, welding procedure specifications (WPS), and detailed FAT reports to ensure seamless field installation and regulatory approval.
Answering search intent and engineering queries relative to machinery sizing, operation, and chemical requirements.
High-efficiency systems designed to complement sludge dewatering, process concentration, and industrial drying lines.
Multistage refining cyclone configurations designed for precise extraction of starch proteins and fibers.
Heavy-duty corn milling equipment providing uniform crushing action to separate corn germ from starch hulls.
Designed for alcohol distilleries, maximizing primary steam recycling during DDGS concentrate production.
Mechanical Vapor Recompression loops that recycle steam energy to reduce primary thermal inputs.
CE-compliant bundle drying equipment optimized for heavy solids and starches requiring safety systems.
Features short residence times and low temperature differentials, preserving heat-sensitive products.
Engineered for long-life industrial drying operations with minimal steam loss and steady product flow.
Continuous drying loop optimized for rapid starch drying and reliable discharge cake formatting.
Connect with our engineering team to design custom dewatering and evaporation systems tailored to your process requirements.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd.
Zhoutie Town, Yixing City, Jiangsu Province, China
Specialists in industrial concentration, drying, starch lines, and Category III medium & low-pressure vessels.
Zongheng