Overview: The MEVA Screw Wash Press (SWP) is a stainless steel device designed for washing fecal content in screenings, reducing their weight and volume, and minimizing odor and disposal costs. It achieves a dry solids (DS) content of 40-60% and is suitable for both small and large wastewater treatment plants.

Technical Specifications: The SWP is available in various models (SWP 15, SWP 20, SWP 25, SWP 30, SWP 40) with capacities ranging from 0.5 to 7.5 m³/h. Each model has specific dimensions for inlet opening, total length, height, width, inlet width, and wash zone. The device is primarily constructed from stainless steel, with durable steel used for the screw and wear parts.

Functionality: Screenings are moved by a rotating screw, with wash water added in the wash/press zone to remove dissolved materials. The control system adjusts the working cycle based on the screenings' composition. A counter pressure screw can be added to enhance washing efficiency and DS content. The press transports the processed screenings to a container via various systems.

Design Features: The SWP features double troughs for high torque resistance, allowing for a large inlet opening and maximal dewatering. The screw operates close to the inner pipe for high drainage, supported by a robust axial bearing and worm gear. The press zone is accessible through a hatch for easy maintenance.

Advantages: The SWP returns washed-out organic contents to the treatment process, increasing the DS content of screenings. When combined with a MEVA Counter Pressure Screw, it produces a product optimal for incineration. The SWP is compact, cost-efficient, and easy to operate, making it ideal for facilities with increasing screenings due to fine screens.

Applications: The SWP is used in wastewater treatment plants to manage screenings from fine screens, coarse screens, sieves, or transportation equipment like spiral or belt conveyors. It addresses the challenges of increased screenings, odor problems, and disposal costs.