TheThe key to the Trident MD Press dewatering process is the “dewatering cylinder”. This cylinder can achieve thickening and pressing (dewatering) in a single integrated operation. The MD Press can take sludge as dilute as 0.1% solids directly from a treatment process, including and oxidation ditch or clarifier, and produce high solids cake. Separate thickening, storage and conditioning processes are eliminated. In addition, required operator attendance, power consumption and water use for operational wash-down are significantly reduced.
The MD Press allows dewatering and concentrating of sludge from many industrial or municipal treatment processes. The all-in-one construction makes it e very compact and economical piece of equipment.
Utilizing self-cleaning floating multi discs, the unit handles oily sludge without clogging and requires only small volumes of rinsing water which is applied through integrated CIP spray nozzles.
The Trident MD Press has been designed to handle a wide range of sludge types. It is especially useful when sludge has a high oil and fat content (FOGS) that would bind filter materials and clog the process. Industrial and municipal applications include:
• Wastewater sludge from remote camp operations
• Food processing and wash-down wastes
• Oil sludge from machining operations
• Wastes from textile processing
• Sludge from processed flowback water from oil and gas operations
• Sludge from tailings ponds for mining and oil and gas operations
• DAF float from animal manure and slaughterhouse waste
Unlike traditional screw presses, the Trident MD Press features a slow-speed, low wear screw within a unique “slip-disc” dewatering cylinder. Spacers and fixed rings are held in place on tie rods where the sliding rings, slightly smaller than the outer diameter of the screw and slightly narrower than the fixed rings, are gently moved by the screw. These sliding rings clean the fine gaps between the fixed rings and preventing clogging.
The moving rings also cut into the sludge cake creating additional surface area and the release of more moisture. The initial section of the dewatering cylinder is the thickening zone where the filtrate is discharged. The final section of the cylinder compresses and dewaters the sludge as the pitch of the screw narrows and the gaps between the rings decrease toward the end-plate where solids are discharged.
Easy installation and fully automated operation
Self-cleaning design for clog-free operation with minimal maintenance
Automated CIP spray bar for efficient wash water use
Requires minimal operator attendance
Effective filtration processes can achieve more than 20% dry matter
Low power consumption (up to 90% less than other dewatering technologies)
Low noise and odor generation
Built-in flocculation tank and mixer unit
Prior to the dewatering cylinder, the raw sludge is fed into a mixing tank where a polymer is thoroughly mixed. The sludge then passes through a flocculation tank where gentle mixing and flocculation occurs. From there, the sludge is channeled into the dewatering cylinder for pressing. The entire operation is controlled by the Trident MD Press control panel.
The Trident MD Press is designed to be a fully automated system capable of starting up, operating and shutting down with no operator intervention. In addition to controlling the Trident MD Dewatering System itself, the control panel is designed to automate the polymer feed system, the unit sludge feed pump, as well as any conveyors required to remove dewatered cake. All components of the dewatering system work together, automatically starting up, operating, and shutting down as required. Trident provides a turnkey systems that is fully integrated in the customer’s operation process. In addition, unit operating and alarm outputs for connection to plant PLC/SCADA systems are standard.