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 choice compared to typical pumped techniques.
A te-sewpas unit at Stocksbridge.
When Yorkshire Water decided to relocate Stocksbridge Wastewater Treatment Works 2km to the south to allow a serious housing growth, the temporary to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working cost. 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 removal unit and two 15.5m diameter primary settling tanks adopted by biological 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 and then flows by gravity to re-enter the method upstream of the primary settlement tanks.
Simple, low opex sludge pumping
For this critical obligation, MMB chosen the te-sewpas pulsed air raise pump system equipped by Te-Tech Process Solutions. เกจวัดแรงดันแก๊ส -contained unit incorporates a 4.6kW responsibility facet channel air blower, actuated air control valves, air manifold and management panel housed within a weatherproof GRP enclosure and is delivered to web site absolutely 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 period of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and ensuring constant desludging.
เกจวัดแรงดัน300psi can be located near the tanks that it serves with versatile air supply hoses routed through ducts to every of the desludge chambers. The air delivered is sizzling and in consequence there isn’t any need for thermal lagging or insulation. Each te-sewpas unit can serve up to four main or humus tanks with typical particular person air supply 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 management panel, MMB decided to combine the te-sewpas controls into the central PLC and Te-Tech offered a practical design specification for this objective. The venture was accomplished in October 2019. “We’ve been using the air carry techniques of various makes on our websites for the last 20–25 years,” says Yorkshire Water’s Wastewater Asset Planning Sponsor Jan Buczylo, “The te-sewpas is especially strong and we decided to retrofit further systems in place of typical progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of these two techniques was completed in April 2021.
Significant whole life value savings
The te-sewpas system offers vital entire life cost financial savings when in comparison with typical pumped methods. For a typical installation serving two tanks, just like the Stocksbridge challenge, based mostly on an estimated 25% reduction within the electrical energy consumption and decreased maintenance necessities, te-sewpas provides a 40% lower capital cost and 50% discount in operational value compared to a pumped desludge system.

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