Volute Press for Sludge Dewatering

COYON volute press for sludge dewatering is a cutting-edge sludge treatment equipment designed to address key pain points of traditional dewatering machines. Guided by the principles of co-directional hydraulic action, thin-layer dewatering, optimized pressure control, and extended dewatering paths, it effectively solves issues like easy clogging, inability to handle low-concentration or oily sludge, high energy consumption, and complex operation. Operating fully automatically, this volute screw press achieves efficient flocculation, continuous sludge concentration, and squeezing dewatering-finally collecting filtrate for reuse or discharge. It is widely trusted in municipal sewage treatment projects and water treatment systems across food, starch, oil, pharmaceutical, chemical, papermaking, leather, and other industries.

Volute sludge dewatering machines are widely used in municipal wastewater treatment plants, industrial discharge treatment, sludge reduction, and resource utilization. They are particularly suitable for treating various types of sludge, including activated sludge, chemical sludge, and papermaking waste sludge, helping businesses and cities achieve environmental compliance, promoting resource recycling, and reducing treatment costs.

We offer customized services to meet diverse customer needs, including equipment specifications, throughput, material selection, and automation levels. Our professional team will design optimal solutions based on customer operating conditions and application environments, ensuring top-tier equipment performance and meeting the sludge dewatering requirements of various industries.

The core of the volute press for sludge dewatering consists of a filter unit formed by multiple fixed rings, movable rings, and a penetrating screw shaft. This unique structure replaces traditional filter cloth and centrifugal mechanisms, delivering more stable and efficient dewatering performance.

Sludge enters the filter cartridge from the inlet and moves forward under the combined push of spiral blades and movable rings. As it advances, the space between adjacent rings gradually decreases, creating a continuous increase in internal pressure. Free moisture in the sludge is filtered out by gravity during the initial stage, while bound moisture is thoroughly squeezed out under high pressure in the later stage. The dewatered solid fraction is pushed to the outlet for discharge, and the separated filtrate is collected in the catch basin for centralized treatment.

The volute screw press's integrated design divides the process into two key stages: the front-end thickening stage (reducing sludge volume rapidly) and the end-stage dewatering stage (achieving deep moisture removal). This two-in-one workflow eliminates the need for intermediate transfer, ensuring smooth and efficient sludge treatment.

* Direct Treatment Without Pre-Thickening: It can directly process sludge from aeration tanks and secondary sedimentation tanks-no need for additional sludge thickeners or sludge pools. This reduces construction investment by 30% and avoids phosphorus release issues from traditional sludge concentration pools, enhancing the overall phosphorus removal capacity of the sewage treatment system.

* Reduced Auxiliary Equipment Costs: The integrated design eliminates the need for mixing structures and other auxiliary equipment, cutting associated purchase and operational costs. For small to medium-sized wastewater treatment plants, this translates to tens of thousands of dollars in savings on initial infrastructure.

* Lower Supporting Equipment Expenses: It saves the cost of sludge dewatering supporting equipment such as air compressors and flushing pumps. The self-cleaning function of fixed and movable rings reduces reliance on flushing systems, while low energy consumption design minimizes the load on supporting power equipment.

* Space-Saving & Efficiency-Boosting: With a small footprint, it reduces the construction investment of dewatering machine rooms by 40%. The integration of sewage and sludge treatment reduces the processing load of subsequent biochemical reactors, lowering the overall operation cost of the sewage treatment system by 15%-20%.

* Versatile Sludge Adaptability: Unlike traditional equipment, it easily handles low-concentration sludge (down to 2000mg/L) and oily sludge from food or petrochemical industries. The anti-clogging design ensures stable operation even with sticky or high-fiber sludge types.

The volute sludge dewatering machine can be widely used for dewatering sludge of municipal administration wastewater, food, beverage, drink, slaughtering and breeding, printing, petrochemical engineering, papermaking, tannery, and pharmaceutical.

* Municipal wastewater treatment: Processes domestic sewage sludge efficiently, reducing volume for cost-effective disposal or resource reuse (e.g., landfilling, incineration).

* Food & starch industry: Dewaters organic sludge from processing lines, complying with strict environmental discharge standards and reducing waste disposal costs.

* Oil & petrochemical industry: Handles oily sludge that is difficult for traditional equipment to process, preventing pipeline clogging and environmental pollution.

* Pharmaceutical & chemical industry: Treats sludge with complex compositions, achieving harmless treatment and meeting regulatory requirements.

* Papermaking & leather industry: Processes high-fiber and protein-rich sludge, minimizing environmental impact and supporting sustainable production.