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 carry sludge pumping possibility compared to standard 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 significant housing improvement, the temporary to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low operating value. The relocation also allowed for an upgrade from 13,000 population to 15,000 for the 2030 design horizon.
The new £15.sixty five million works consists of duty/standby fine screens, a vortex grit removal unit and two 15.5m diameter main settling tanks followed by biological 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 process upstream of the first settlement tanks.
เกจวัดแรงดูด , low opex sludge pumping
For this crucial duty, MMB selected the te-sewpas pulsed air lift pump system equipped by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW responsibility side channel air blower, actuated air control valves, air manifold and control panel housed within a weatherproof GRP enclosure and is delivered to site fully assembled and tested. เกจวัดแรงดัน1บาร์ 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 duration of desludging to be adjusted to permit the sludge to consolidate thus eliminating any potential ‘rat-holing’ and making certain constant desludging.
The unit could be situated near the tanks that it serves with flexible air supply hoses routed by way of ducts to each of the desludge chambers. The air delivered is hot and as a result there is no need for thermal lagging or insulation. Each te-sewpas unit can serve up to 4 primary or humus tanks with typical particular person 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 using the standard management panel, MMB determined to combine the te-sewpas controls into the central PLC and Te-Tech provided a practical design specification for this function. The project was accomplished in October 2019. “We’ve been using the air carry systems 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 sturdy and we decided to retrofit additional systems rather than conventional progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of these two methods was completed in April 2021.
Significant complete life value financial savings
The te-sewpas system provides important entire life price financial savings when compared to typical pumped systems. For a typical installation serving two tanks, just like the Stocksbridge challenge, primarily based on an estimated 25% discount within the electrical energy consumption and reduced maintenance necessities, te-sewpas supplies a 40% lower capital value and 50% reduction in operational value compared to a pumped desludge system.

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