Yorkshire Water uses Te-Tech air-lift pumping for wastewater duties

Mike Froom, Business Development Director for Te-Tech Process Solutions in Southampton, UK, explores the advantages of a pulsed air lift sludge pumping option compared to conventional pumped techniques.
A te-sewpas unit at Stocksbridge.
When pressure gauge ราคา ถูก decided to relocate Stocksbridge Wastewater Treatment Works 2km to the south to allow a serious housing growth, the temporary to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working price. The relocation also allowed for an upgrade from thirteen,000 inhabitants to fifteen,000 for the 2030 design horizon.
The new £15.sixty five million works consists of duty/standby nice screens, a vortex grit removal unit and two 15.5m diameter primary settling tanks followed by biological treatment in seven trickling filters with two sixteen.7m humus settlement tanks. Sludge produced within the humus settlement tanks is delivered to a chamber alongside the tanks and then flows by gravity to re-enter the method upstream of the first settlement tanks.
Simple, low opex sludge pumping
For this critical duty, MMB selected the te-sewpas pulsed air lift pump system provided by Te-Tech Process Solutions. ร้านซ่อมเครื่องวัดความดันโลหิต -contained unit incorporates a four.6kW obligation side channel air blower, actuated air control valves, air manifold and management panel housed within a weatherproof GRP enclosure and is delivered to web site totally assembled and tested. Each pulse of air lifts a amount of sludge and discharges it from the sludge discharge pipe. A programmable timer within the PLC permits the frequency and length of desludging to be adjusted to permit the sludge to consolidate thus eliminating any potential ‘rat-holing’ and guaranteeing consistent desludging.
The unit may be positioned close to the tanks that it serves with flexible air supply hoses routed through ducts to every of the desludge chambers. The air delivered is scorching and as a result there is not a want for thermal lagging or insulation. Each te-sewpas unit can serve as a lot as four major or humus tanks with typical individual air delivery hose size up to 35m.
At Stocksbridge, a single Type B te-sewpas unit with duty/standby air blowers serves the 2 humus tanks. Rather than using the standard control panel, MMB determined to integrate the te-sewpas controls into the central PLC and Te-Tech supplied a practical design specification for this function. The project was accomplished in October 2019. “We’ve been utilizing the air raise techniques of varied makes on our websites for the last 20–25 years,” says Yorkshire Water’s Wastewater Asset Planning Sponsor Jan Buczylo, “The te-sewpas is especially sturdy and we decided to retrofit further systems rather than standard progressive cavity pumps at both Stillington and Sutton-on-the-Forest.” Installation of those two methods was accomplished in April 2021.
Significant complete life cost financial savings
The te-sewpas system supplies significant whole life price savings when compared to typical pumped systems. For a typical installation serving two tanks, just like the Stocksbridge challenge, based on an estimated 25% reduction in the electrical energy consumption and reduced maintenance requirements, te-sewpas supplies a 40% decrease capital value and 50% reduction in operational price in comparison with a pumped desludge system.
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