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Sustainable Solid Liquid separation for high throughput of sludge.
Screw Press

TECHNOLOGY OVERVIEW

Screw presses are mechanical devices used to separate solids from liquids by applying pressure. They consist of a rotating screw that forces the mixture through a filter medium, squeezing out the liquid while retaining the solid material. Screw presses are widely used in various industries, including wastewater treatment, food processing, and chemical manufacturing, for efficient solid-liquid separation.

The Nirtech Multi-Plate Screw Press is a high-efficiency sludge dewatering machine that integrates seamlessly with an auto-control cabinet, sludge thickening and dewatering body, and a liquid collection tank. Engineered for optimum performance, it provides an effective solution for separating solids and liquids in wastewater treatment processes. By using a combination of screw technology and moving rings, it delivers a clog-free operation, reducing the need for additional equipment like sedimentation tanks and sludge thickening tanks, resulting in significant cost savings.

The initial section of dewatering drum is Thickening Zone where the solids-liquid separating process takes place and where the filtrate will be discharged. The pitch of the screw and the gaps between the rings decrease at the end of dewatering drum, increasing the internal pressure of the drum. At the end, End Plate further increases the pressure so as to discharge dry sludge cake

Our Multi-Plate Screw Press is driven by automated PLC control, making it a hands-off solution that ensures consistent, high-quality performance. Its self-cleaning design and low-speed screw mechanism ensure that it consumes less energy, water, and maintenance compared to traditional systems such as belt presses, frame presses, and centrifuges.

ADVANTAGES

Our Multi-Plate Screw Press is at the forefront of innovation in sludge dewatering, offering a reliable, energy-efficient, and clog-free solution that outperforms traditional methods. Whether you're operating a small septic system or a large-scale wastewater treatment facility, our cutting-edge equipment is designed to meet the toughest demands while reducing operational costs.

● Clog-Free Operation for Uninterrupted Performance : The Multi-Plate Screw Press utilizes a unique combination of screws and moving rings to achieve a self-cleaning mechanism. This clog-free design ensures uninterrupted operation and eliminates the need for manual intervention.

● Automated Control for Simplified Operation : The PLC-controlled system automates the entire dewatering process, minimizing manual operation and human error. This feature allows for 24/7 operation with minimal supervision.

● Superior Efficiency with Low Power and Water Consumption : Compared to traditional methods like centrifuges, the Multi-Plate Screw Press operates at a low screw speed, resulting in significantly lower power consumption (as low as 0.3kw) and water usage (as low as 58g/m3).

● Direct Sludge Treatment and Reduced Phosphorus Levels : The Multi-Plate Screw Press effectively dewaters low-concentration sludge directly from biological processes. This capability contributes to a reduction in phosphorus levels in the return water from sludge treatment.

● Stress-Free Maintenance for Minimal Downtime : Performing a partial overhaul of the dewatering drum is a simple process that can be completed on-site within half a day. This minimizes downtime and maintenance costs.

INDUSTRIES SERVED

The Nirtech Multi-Plate Screw Press is a versatile solution suitable for various applications, including across a wide range of industries, making them indispensable tools for efficient solid-liquid separation. Its unique, clog-free self-cleaning mechanism and energy-efficient design make it ideal for processing both low-concentrated and high-concentrated sludge. Below, we elaborate on the diverse applications of the Nirtech Multi-Plate Screw Press and the industries it serves .

● Municipal Wastewater Treatment Plants :
Municipal wastewater treatment facilities face the ongoing challenge of treating large volumes of sewage sludge, which can often be thick and difficult to manage. The Nirtech Multi-Plate Screw Press excels in this environment by offering an efficient solution for dewatering sewage sludge. By removing excess moisture, sludge becomes easier to handle, transport, and dispose of, reducing costs and environmental impact.
Sludge management from primary and secondary sludge of wastewater.
Processing of biosolids for composting into valuable byproducts like fertilizers and soil conditioners or disposal..
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● Industrial Effluent / Wastewater Treatment :
Industries producing high volumes of effluent / wastewater, such as textiles, chemicals, and pharmaceuticals, Sugar, Breweries, Distilleries often need to treat sludge that contains a variety of contaminants. The Multi-Plate Screw Press offers an efficient, clog-free solution for industrial effluent / wastewater treatment..
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● Food & Beverage Industry :
The food and beverage industry produces significant volumes of organic sludge from processes like wastewater treatment and food processing. Nirtech's Multi-Plate Screw Press is ideal for dewatering food processing sludge due to its ability to handle high organic content and its self-cleaning mechanism, which can efficiently deal with oily waste.
Juice Extraction : Screw presses are employed to extract juice from fruits and vegetables, ensuring high yields and preserving the natural flavor and nutrients.
Oilseed Pressing : They are used to extract oils from various oilseeds, such as soybeans, rapeseed, and sunflower seeds.
Food Waste Processing : Screw presses can dewater food waste, reducing its volume and facilitating composting or anaerobic digestion.
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● Pulp and Paper Industry :
The pulp and paper industry produces a large amount of organic sludge, much of which is generated during wastewater treatment or from paper mill processes. The Nirtech Multi-Plate Screw Press offers an ideal solution for dewatering this sludge effectively and efficiently. Pulp Dewatering: Screw presses are used to dewater pulp, reducing its moisture content and preparing it for further processing.

● Agricultural Applications :
Agricultural operations, including animal farming and biogas production, and septic systems often produce a large amount of waste sludge that requires treatment and disposal. The Nirtech Multi-Plate Screw Press is a robust solution for dewatering this organic waste in agricultural and small-scale wastewater treatment settings.
Manure Dehydration : Screw presses can dewater animal manure, reducing its volume and creating a valuable fertilizer.
Silage Processing : They are used to dewater silage, improving its storage stability and nutritional value.

● Other Industries :
Mining : Screw presses can be used to dewater mineral slurries and recover valuable minerals.
Textile Industry : They are employed in the textile industry for dewatering fabrics and recovering dyes.

The Nirtech Multi-Plate Screw Press is a revolutionary sludge dewatering solution that serves a wide array of industries, offering efficiency, cost savings, environmental sustainability, and low-maintenance benefits. Its adaptability to handle different types of sludge, including oily, organic, and chemically contaminated sludges, makes it an ideal choice across sectors such as municipal wastewater treatment, industrial applications, food & beverage production, pulp and paper mills, oil & gas, agriculture, septic systems, and mining.
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Why Choose Nirtech Multi-Plate Screw Press?

Superior performance with clog-free operation and high efficiency
Low operating costs due to minimal power and water consumption
Automated operation for 24/7 continuous dewatering
Reduced maintenance requirements and downtime
Wide range of sizes to cater to various capacities

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Screw Press– FAQ

The press operates by feeding the material into a chamber containing rotating plates and screws. As the screws rotate, they exert pressure on the material, forcing the liquid through a filter medium while retaining the solid.

High Throughput: Handles large volumes of material efficiently.

Low Power Consumption: Operates with minimal energy use.

Clog-Free Operation: Minimizes downtime due to blockages.

Automated Control: Enables 24/7 operation with minimal supervision.

Low Maintenance: Requires minimal maintenance and repairs.

Reduced Sludge Volume: Significantly reduces the volume of sludge for easier disposal.

The Nirtech Multi Plate Screw Press can effectively dewater a wide range of sludge types, including:  Municipal wastewater sludge, Industrial wastewater sludge, Biosolids, Food processing sludge, Chemical process sludge.

Municipal wastewater treatment plants, Industrial wastewater treatment facilities, Food and beverage processing plants, Chemical and pharmaceutical industries, Agricultural applications (manure dewatering).

Compared to traditional methods like belt filter presses and centrifuges, the Multi Plate Screw Press offers advantages such as: Lower energy consumption, Higher throughput, Reduced maintenance requirements, Improved dewatering efficiency.

Yes, the Multi Plate Screw Press is designed for easy maintenance. Regular inspections and basic cleaning are typically sufficient to ensure optimal performance.

Visit the Nirtech website for detailed product information. Contact Nirtech directly to speak with a sales representative. Request a customized quote for your specific dewatering needs.

Yes, Nirtech provides professional installation and comprehensive training to ensure proper operation and maintenance of the Multi Plate Screw Press.

Reduces sludge volume, minimizing landfill space requirements. Improves sludge quality for beneficial reuse (e.g., fertilizer). Contributes to a reduced environmental footprint by minimizing energy consumption.

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