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 advantages of a pulsed air carry sludge pumping option in comparability with typical pumped methods.
A te-sewpas unit at Stocksbridge.
When Yorkshire Water determined to relocate Stocksbridge Wastewater Treatment Works 2km to the south to allow a major housing improvement, the transient to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low operating value. The relocation additionally allowed for an improve from 13,000 population to 15,000 for the 2030 design horizon.
The new £15.sixty five million works consists of duty/standby fantastic screens, a vortex grit removal unit and two 15.5m diameter primary settling tanks adopted by organic treatment 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 and then flows by gravity to re-enter the method upstream of the first settlement tanks.
Simple, low opex sludge pumping
For this crucial responsibility, MMB chosen the te-sewpas pulsed air lift pump system equipped by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW obligation side channel air blower, actuated air management valves, air manifold and management panel housed inside a weatherproof GRP enclosure and is delivered to site 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 allows the frequency and period of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and making certain constant desludging.
เกจแรงดัน could be situated near 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 sizzling and in consequence there is no need for thermal lagging or insulation. Each te-sewpas unit can serve as much as four major 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 2 humus tanks. Rather than utilizing the standard management panel, MMB decided to integrate the te-sewpas controls into the central PLC and Te-Tech provided a functional design specification for this function. The venture was accomplished in October 2019. “ เกจวัดแรงดันน้ำราคา ’ve been utilizing the air raise techniques 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 particularly strong and we decided to retrofit further methods instead of typical progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of those two systems was accomplished in April 2021.
Significant whole life value savings
The te-sewpas system supplies important entire life value financial savings when compared to conventional pumped systems. For a typical set up serving two tanks, like the Stocksbridge challenge, primarily based on an estimated 25% reduction within the electrical energy consumption and lowered upkeep requirements, te-sewpas offers a 40% decrease capital price and 50% discount in operational price compared to a pumped desludge system.

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