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 option compared to conventional pumped methods.
A te-sewpas unit at Stocksbridge.
When Yorkshire Water determined to relocate Stocksbridge Wastewater Treatment Works 2km to the south to permit a serious housing improvement, the temporary to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working price. The relocation additionally allowed for an upgrade from thirteen,000 population to 15,000 for the 2030 design horizon.
The new £15.sixty five million works consists of duty/standby nice screens, a vortex grit removing unit and two 15.5m diameter major settling tanks followed by biological treatment in seven trickling filters with two 16.7m 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 first settlement tanks.
Simple, low opex sludge pumping
For this important duty, MMB chosen the te-sewpas pulsed air lift pump system supplied by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW responsibility aspect channel air blower, actuated air management valves, air manifold and management panel housed within a weatherproof GRP enclosure and is delivered to website totally assembled and examined. Each pulse of air lifts a amount of sludge and discharges it from the sludge discharge pipe. A programmable timer within the PLC allows the frequency and duration of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and ensuring consistent desludging.
The unit may be situated near the tanks that it serves with flexible air delivery hoses routed via ducts to each of the desludge chambers. The air delivered is sizzling and as a result there isn’t a want for thermal lagging or insulation. Each te-sewpas unit can serve up to four major or humus tanks with typical individual air supply 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 utilizing เกจอาร์กอน , MMB decided to integrate the te-sewpas controls into the central PLC and Te-Tech supplied a practical design specification for this function. The venture was accomplished in October 2019. “We’ve been utilizing the air lift systems of various 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 sturdy and we determined to retrofit additional methods rather than standard progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of these two techniques was accomplished in April 2021.
Significant complete life value savings
The te-sewpas system supplies important whole life value savings when in comparison with conventional pumped methods. For pressure gauge digital ราคา serving two tanks, like the Stocksbridge project, based mostly on an estimated 25% discount within the electrical energy consumption and lowered upkeep necessities, te-sewpas provides a 40% decrease capital value and 50% reduction in operational value in comparison with a pumped desludge system.
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