Potable Water

Investment in drinking water membrane protection

Bollfilter's Automatic filters are helping protect Yorkshire Water’s ultra drinking water membrane protection plant at Keldgate, East Yorkshire. Over £18 million pounds has been invested in the site.  Keldgate has been designed for unmanned operation and supplies three quarters of the drinking water requirements for Hull and the surrounding areas each day. That's around (120-130,000 cubic metres of water).

Investment in drinking water membrane protection

Technical Specifications

Sub Application Membrane Protection Pressured
System 11 BOLLFILTER Automatic Type 6.19 NB200 Low Pressure Filters
User Earthtech System
Client Yorkshire Water

Drinking water membrane protection Keldgate

Investment in drinking water membrane protection at Yorkshire Water Treatment Plant

The  site  incorporates  a  massive  state-of-the-art drinking water membrane protection filtration plant. The site has been built to comply with the latest strict European Union regulations. The four banks of primary membranes provide final filtration with a pore size of 150,000 Daltons (0.05 microns). This level of filtration can remove even the tiny cryptosporidium oocyst (egg stage), a cyst containing a zygote formed by a parasitic protozoan such as the malaria parasite that normal chlorine disinfection alone cannot remove.

Boll & Kirch Automatic Pre-Screens have been installed  to  protect  the  membrane  plant. Eleven Bollfilter Automatic units (Type 6.19 NB200 Low Pressure Auto Strainers) prevent particles reaching the sensitive membrane filters with risk of blockage and damage.

Bollfilters for an unmanned site

Each Bollfilter has been supplied with DWI "Drinking Water Inspectorate" approved linings and stainless steel filter elements.  An external water supply employed to assist back-flushing at low operating pressures. Yorkshire Water are pleased with the Boll Filters used for drinking water membrane protection, “We have had no problems at all with them,” said a Yorkshire Water spokesman. Adding, “After commissioning, when the site becomes unmanned, their reliable, low maintenance performance will be even more important.”

Client was Yorkshire Water for system user Earthtech

System includes 11 BOLLFILTER Automatic Type 6.19 NB200 Low Pressure Filters. The Keldgate Site has been constructed in the style of a traditional farmyard to blend in with the local countryside. Download the Keldgate printable Case Study.

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