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Yorkshire Water makes use of Te-Tech air-lift pumping for wastewater duties

Mike Froom, Business Development Director for Te-Tech Process Solutions in Southampton, UK, explores the benefits of a pulsed air raise sludge pumping possibility compared to standard pumped techniques.
A te-sewpas unit at Stocksbridge.
When Yorkshire Water determined to relocate Stocksbridge Wastewater Treatment Works 2km to the south to permit a major housing improvement, the transient to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working price. The relocation also allowed for an improve from thirteen,000 inhabitants to fifteen,000 for the 2030 design horizon.
The new £15.65 million works consists of duty/standby fine screens, a vortex grit removal unit and two 15.5m diameter primary settling tanks adopted by organic remedy 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 after which flows by gravity to re-enter the method upstream of the primary settlement tanks.
Simple, low opex sludge pumping
For this crucial duty, MMB chosen the te-sewpas pulsed air lift pump system equipped by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW duty facet channel air blower, actuated air management valves, air manifold and control panel housed within a weatherproof GRP enclosure and is delivered to website fully assembled and tested. Each pulse of air lifts a amount of sludge and discharges it from the sludge discharge pipe. A programmable timer in 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 ensuring constant desludging.
The unit may be situated close to the tanks that it serves with versatile air supply hoses routed via ducts to every of the desludge chambers. The air delivered is scorching and in consequence there isn’t any want for thermal lagging or insulation. Each te-sewpas unit can serve up to 4 primary 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 usual management panel, MMB decided to integrate the te-sewpas controls into the central PLC and Te-Tech offered a useful design specification for this objective. The challenge was completed in October 2019. “We’ve been utilizing the air lift methods of varied makes on our sites for the last 20–25 years,” says Yorkshire Water’s Wastewater Asset Planning Sponsor Jan Buczylo, “The te-sewpas is particularly sturdy and we decided to retrofit extra methods instead of conventional progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of those two systems was completed in April 2021.
ร้านซ่อมเครื่องวัดความดัน -sewpas system supplies significant whole life value savings when compared to conventional pumped systems. For เกจวัดแรงดันสูญญากาศ serving two tanks, just like the Stocksbridge venture, primarily based on an estimated 25% reduction in the electrical energy consumption and decreased maintenance requirements, te-sewpas provides a 40% lower capital price and 50% discount in operational price in comparability with a pumped desludge system.
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