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Hydro International has launched the Meva counter pressure screw (CPS), which is said to achieve a more than 50 per cent reduction in the volume and weight of screenings.

When combined with the Meva screw wash press (SWP), the Meva CPS unit produces shredded screenings with a dry solids content of between 50-60 per cent, making them suitable for incineration.

The Meva CPS unit also reduces the volume of screenings by half compared to using the SWP alone, offering wastewater treatment work operators up to 80 per cent savings in disposal costs.

Manufactured by Nordic Water from high-quality stainless steel, the CPS unit’s counter-pressure design is said to result in good performance for dewatering and washing of screenings.

Connected to the screw wash press by a pipe bend, the Meva CPS creates a counter pressure to that produced by the working cycle of the SWP.

The system works by continuously adjusting the pressure applied by both the SWP and the CPS units to maximise the dry solids content.

The high counter pressure maximises the time the screenings are retained in the press zone, ensuring the longest available time for washing.

At the discharge of the CPS, the material is shredded to make it suitable for incineration.

The CPS’s design is able to convey material over long vertical distances.

Hydro International

Hydro International is a market-leading provider of products and solutions to control the quantity and improve the quality of water with minimal maintenance.

Hydro’s business operations are based in the UK, US and Ireland and its products are also used across the globe. Hydro products have won international awards for outstanding contributions and technical innovation in the water industry.

Hydro Stormwater

Hydro International’s Stormwater Division delivers sustainable, efficient and cost-effective solutions for water management with minimal land-take. All Stormwater products have no moving parts, no power requirements, a small footprint and low maintenance requirements.

Hydro Wastewater

Hydro International’s Wastewater Division provides products and designs solutions for the effective treatment of effluent and potable water. It is also a trusted partner for spares, service and maintenance agreements to water asset managers.

Hydro’s treatment systems cover an extensive range of water and wastewater management solutions including grit removal, sludge scraper systems, primary and washwater clarification, aeration, sand filtration, sludge screening and transportation and Combined Sewer Overflows.

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