Explore our flagship heavy-duty industrial separators, bundle dryers, and mechanical vapor recompression evaporation plants engineered for optimal efficiency.
An analytical overview of solid-liquid separation dynamics, environmental regulations, and energy footprint reduction strategies in modern municipal and industrial sectors.
Unlike high-speed centrifuges that demand massive horsepower, screw press dewatering utilizes low motor rotational speeds (often between 1–5 RPM). This results in up to 85% energy savings, lower maintenance overheads, and a drastically reduced carbon footprint for wastewater plants worldwide.
Environmental regulatory bodies worldwide are imposing strict moisture content limits on landfill disposal. Industrial sectors now require reliable screw press systems combined with advanced polymer dosing systems to achieve dry cake solids of 20% to 35% across diverse slurry types.
Modern process engineering integrates mechanical dewatering with thermal drying. By maximizing mechanical moisture extraction using a single screw press, factories reduce the thermal loading on downstream apparatus such as our ZXG Tube Bundle Dryers or MVR Evaporators, optimizing total energy balance.
"In circular economies, waste streams are valuable raw inputs. Upfront mechanical sludge dewatering dictates the operational economics of subsequent zero-liquid-discharge (ZLD) systems."
Located in Yixing City, the heart of China’s environmental equipment manufacturing cluster, Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd. leverages an integrated supply chain to deliver high-capacity machinery at competitive price-to-performance ratios.
Our 54,000 square meter factory is equipped with advanced automated plasma cutting, high-precision lathe machinery, and automatic welding stations. Having structural control over our supply chain ensures that our single screw press systems, MVR evaporators, and tube bundle dryers meet the highest mechanical tolerances and metallurgical standards.
By implementing international ISO 9001 and ASME "U" stamp protocols, we guarantee the safety and reliability of our pressure vessels and heavy-duty rotating machinery under continuous industrial loads.
Explore Factory CapabilitiesOur engineering portfolio spans from primary solid-liquid separating screw presses to advanced thermal evaporators and flash drying systems.
Specifically engineered for dewatering solid-containing slurries, fibers, and organic residues. The single screw press features a tapered screw shaft and screen cylinder with reducing pitch. As materials move along the axis, the volume shrinks, exerting pressure to force the water out through the basket screen. This unit features self-cleaning action, minimal operating speeds, low noise, and minimal maintenance requirements.
Primary Applications: Paper pulp dewatering, starch fiber dewatering, corn steep liquor separation, spent brewery grains, and municipal wastewater treatment.
Our Falling Film Evaporation Plants and Forced Circulation Evaporators are designed for concentration of heat-sensitive liquid matrices. In falling film configurations, fluid travels downward inside vertical tubes as a thin film, yielding highly efficient heat transfer and short thermal exposure times. For scaling-prone liquids, our forced circulation designs use high-capacity recirculation pumps to suppress boiling at the heat exchanger surface, preventing crystalline fouling.
Detailed mechanical specifications comparing screw press performance across various industrial sectors.
| Application Area | Feed Consistency (%) | Cake Dryness (%) | Recommended Metallurgy | Polymer Dosing Requirement |
|---|---|---|---|---|
| Municipal Sludge (WAS/Primary) | 0.8% - 3.0% | 20% - 28% | SS304 / Hard-faced flights | High (Cationic) |
| Corn Starch Fiber Dewatering | 8.0% - 12.0% | 35% - 45% | SS316L / Duplex | None to Low |
| Distillery DDGS Spent Grains | 5.0% - 10.0% | 30% - 38% | SS304 / Wear-resistant alloy | Moderate |
| Pulp & Paper Mill Sludge | 2.0% - 5.0% | 25% - 35% | SS304 / Chrome plated | Moderate |
| Food Fermentation Residues | 4.0% - 8.0% | 28% - 40% | SS316L (Sanitary Grade) | Low |
Our combined concentration and drying machinery solves critical processing bottlenecks in the agricultural and chemical sectors.
In wet maize, potato, and cassava starch mills, our single screw press works inline with our YDX Starch Washing Cyclones. It reduces the mechanical load of fibers before they enter downstream airflow dryers, yielding starch starch with high purity and dry solids.
Distillers' Dried Grains with Solubles (DDGS) processing utilizes forced circulation waste heat evaporators to concentrate thin stillage. The concentrated syrup is then mixed with wet cake from our screw press dewatering system, followed by bundle drying to produce premium animal feed.
For chemical and pharmaceutical plants, our falling film evaporation systems and dewatering machinery work together to process high-salinity wastewater, recovering pure distillate water and generating solid crystals for easy disposal.
From a local workshop to an ASME-certified manufacturing powerhouse serving domestic and international markets.
Today, our company covers an area of over 54,000 square meters, with a modern production workshop exceeding 22,000 square meters. The engineering team consists of 3 senior design engineers, 20+ specialized mechanical engineers, and over 120 skilled manufacturing personnel.
Achieved the International quality system certification (Certificate No.: 45021), establishing a complete quality assurance system aligned with international standards.
Acquired the prestigious ASME "U" Stamp authorization, allowing the company to manufacture pressure vessels compliant with North American and European structural codes.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42) for Category III medium & low-pressure vessels.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd (formerly known as Yixing Yangxi Light Industrial Machinery Factory) was established with 45 employees, focusing on basic dewatering equipment and dryers.
Our systems operate under demanding conditions in corn wet milling, waste heat recovery, and wastewater treatment plants worldwide.
Answers to common engineering and procurement questions regarding screw press dewatering, evaporators, and bundle dryers.
Unlike centrifuges that require high rotational speeds (2,000–4,000 RPM) to generate G-forces, a screw press operates at low speeds (1–5 RPM). This results in lower power consumption, minimal wear on moving parts, and lower noise levels (below 65 dB). Additionally, screw presses handle varying solids concentrations effectively without risk of mechanical imbalance.
Yes. All of our screw shafts, screen baskets, and process vessels can be customized using specific corrosion-resistant alloys, including SS304, SS316L, 904L, and Duplex Stainless Steel (SAF 2205/2507), depending on the chloride and chemical profile of your slurry.
Mechanical Vapor Recompression (MVR) recycles the latent heat of evaporation. A mechanical compressor compresses the clean vapor evaporated from the product, increasing its pressure and temperature. This compressed vapor is then returned to the heating side of the system to serve as the heating steam source, reducing external steam demands by up to 90%.
Jiangsu Zongheng is certified under the ASME Boiler & Pressure Vessel Code (carrying the official "U" Stamp). We also hold the Special Equipment Manufacturing License of China (Category III medium/low pressure vessels) and strictly conform to ISO 9001 and CE directives for all export machinery.
Contact our engineering team in Yixing to design custom solutions for your dewatering, concentration, and drying requirements.
Whether you are designing a zero-liquid discharge chemical plant, an industrial agricultural starch refinery, or upgrading municipal waste infrastructure, our project engineers will help size your equipment, design material flows, and calculate utility costs.
High-capacity evaporators, airflow flash dryers, starch cyclones, and mill components for food, chemical, and waste processing operations.
Zongheng