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 lift sludge pumping option compared to conventional pumped techniques.
A te-sewpas unit at Stocksbridge.
When Yorkshire Water decided to relocate Stocksbridge Wastewater Treatment Works 2km to the south to permit a significant housing growth, the brief to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low operating cost. The relocation also allowed for an upgrade from thirteen,000 inhabitants to 15,000 for the 2030 design horizon.
The new £15.65 million works consists of duty/standby nice screens, a vortex grit removal unit and two 15.5m diameter major settling tanks followed by organic 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 and then flows by gravity to re-enter the process upstream of the first settlement tanks.
เกจวัดแรงดันน้ำราคา , low opex sludge pumping
For this critical duty, MMB chosen the te-sewpas pulsed air lift pump system supplied by Te-Tech Process Solutions. The self-contained unit incorporates a four.6kW duty side channel air blower, actuated air management valves, air manifold and control panel housed within a weatherproof GRP enclosure and is delivered to 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 in the PLC allows the frequency and period of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and guaranteeing constant desludging.
The unit can be located near the tanks that it serves with flexible air supply hoses routed via ducts to every of the desludge chambers. The air delivered is hot and as a result there isn’t a want for thermal lagging or insulation. Each te-sewpas unit can serve up to 4 main or humus tanks with typical particular person air delivery hose length up to 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 management panel, MMB decided to combine the te-sewpas controls into the central PLC and Te-Tech supplied a useful design specification for this function. The challenge was completed in October 2019. “We’ve been utilizing the air lift techniques of varied makes on our websites for the final 20–25 years,” says Yorkshire Water’s Wastewater Asset Planning Sponsor Jan Buczylo, “The te-sewpas is especially robust and we decided to retrofit extra techniques rather than typical progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of those two systems was completed in April 2021.
เครื่องมือวัดความดัน -sewpas system offers significant complete life cost savings when in comparability with typical pumped methods. For a typical installation serving two tanks, like the Stocksbridge challenge, based mostly on an estimated 25% discount within the electrical power consumption and lowered maintenance necessities, te-sewpas provides a 40% decrease capital cost and 50% reduction in operational value compared to a pumped desludge system.

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