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 raise sludge pumping option compared to standard pumped techniques.
เกจวัดแรงดันดิจิตอลราคา -sewpas unit at Stocksbridge.
When เกจวัดแรงดันคือ determined to relocate Stocksbridge Wastewater Treatment Works 2km to the south to allow a significant housing development, the temporary to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low operating value. The relocation additionally allowed for an improve from 13,000 inhabitants to 15,000 for the 2030 design horizon.
The new £15.65 million works consists of duty/standby fine screens, a vortex grit removing unit and two 15.5m diameter main settling tanks adopted by organic therapy in seven trickling filters with two 16.7m humus settlement tanks. Sludge produced in the humus settlement tanks is delivered to a chamber alongside the tanks after which flows by gravity to re-enter the process upstream of the first settlement tanks.
Simple, low opex sludge pumping
For this crucial duty, MMB chosen the te-sewpas pulsed air carry pump system supplied by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW duty facet channel air blower, actuated air control valves, air manifold and management panel housed inside a weatherproof GRP enclosure and is delivered to web site fully assembled and examined. Each pulse of air lifts a quantity of sludge and discharges it from the sludge discharge pipe. A programmable timer within the PLC allows 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 can be located close to the tanks that it serves with flexible air supply hoses routed by way of ducts to every of the desludge chambers. The air delivered is scorching and consequently there is not a need for thermal lagging or insulation. Each te-sewpas unit can serve up to four major or humus tanks with typical particular person air delivery hose length as a lot as 35m.
At Stocksbridge, a single Type B te-sewpas unit with duty/standby air blowers serves the two humus tanks. Rather than using the standard control panel, MMB decided to integrate the te-sewpas controls into the central PLC and Te-Tech supplied a useful design specification for this function. The project was accomplished in October 2019. “We’ve been using the air lift techniques of varied makes on our sites for the final 20–25 years,” says Yorkshire Water’s Wastewater Asset Planning Sponsor Jan Buczylo, “The te-sewpas is especially robust and we determined to retrofit extra methods in place of conventional progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of those two systems was completed in April 2021.
Significant entire life cost savings
The te-sewpas system provides important whole life cost savings when compared to conventional pumped techniques. For a typical installation serving two tanks, just like the Stocksbridge venture, based on an estimated 25% discount within the electrical energy consumption and decreased upkeep necessities, te-sewpas supplies a 40% lower capital price and 50% discount in operational value in comparability with a pumped desludge system.
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