UK wastewater treatment plant receives progressing cavity pump to help improve water quality

Sept. 22, 2014 -- NOV Mono, a progressing cavity pump manufacturer, has delivered a turnkey project to provide an extra level of protection for the Dwr Cymru Crymych treatment plant in Pembrokeshire, a county in the Southwest of Wales. The project centers on an EZstrip progressing cavity pump, which is now being used on sewage transfer duties, to ensure that the plant can guarantee the quality of the treated sewage under any flow conditions.

Powered by a 4-kW motor and operating at a duty speed of 226 rpm, the EZstrip pump draws sewage from the center of the final settlement tank at the facility. It pumps the sewage back up to the head of the treatment system, from where it returns back through the filter bed to the final tank. This ensures that the plant's biological filters do not dry out and remain effective, even in very low flow conditions. This in turn helps to maintain the quality of the final sewage within the required boundaries, at all times.

Mono was approached because of its ability to provide a full turnkey package that covered all the stages -- from initial site survey, design and manufacturing to full mechanical and electrical installation. Working closely with the project's civils contractor, Mono installed the pump, suction pipe, rising main, control panel, and overpressure and high-temperature devices, and completed the final testing and commissioning. Both the electrical and mechanical work were handled by Mono, who has since completed a similar project at the Dwr Cymru Lamphey treatment plant.

The progressing cavity pump features Mono's revolutionary EZstrip design that allows it to be maintained in place. This provides a quick and easy way to disassemble, de-rag and maintain the pump without the need to disconnect suction and discharge pipework. This reduces a typical day-long maintenance operation down to just 30 minutes. Available in cast iron or stainless steel and with a choice of rotor and stator materials, the pump requires only basic tools to maintain and can be retrofitted into existing installations where a Mono Compact C pump has previously been used.

See also:

"MA wastewater treatment plant improves operations with sludge grinder"

"Ontario WWTPs adopt new stators to increase pump life"

NOV Mono Group

NOV Mono is a division of National Oilwell Varco. It comprises a group of specialist companies offering progressing cavity pumps, artificial lift systems, industrial mixers, heat exchangers, grinders, screens and aftermarket replacement parts and services, across a broad spectrum of industrial sectors including water and wastewater, oil and gas, chemical, pulp and paper, food and beverage and agriculture. The company first began manufacturing progressing cavity pumps in 1935 and industrial mixers in 1952, giving it a heritage of over 75 years that is built on world-renowned design, expertise and excellence. For more information, visit www.mono-pumps.com.

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