Yorkshire Water uses Te-Tech air-lift pumping for wastewater duties

ร้านซ่อมเครื่องวัดความดัน , Business Development Director for Te-Tech Process Solutions in Southampton, UK, explores the advantages of a pulsed air carry sludge pumping option in comparison with typical pumped techniques.
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 development, the brief to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working value. The relocation also allowed for an upgrade from thirteen,000 inhabitants to fifteen,000 for the 2030 design horizon.
The new £15.sixty five million works consists of duty/standby fine screens, a vortex grit elimination unit and two 15.5m diameter main settling tanks adopted 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 process upstream of the first settlement tanks.
Simple, low opex sludge pumping
For this crucial 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 responsibility facet channel air blower, actuated air management valves, air manifold and control panel housed inside a weatherproof GRP enclosure and is delivered to site fully 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 length of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and making certain consistent desludging.
The unit could be positioned near the tanks that it serves with versatile air supply hoses routed through ducts to every of the desludge chambers. The air delivered is hot and in consequence there isn’t a want for thermal lagging or insulation. Each te-sewpas unit can serve as a lot as four major or humus tanks with typical individual air delivery 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 usual management panel, MMB determined to integrate the te-sewpas controls into the central PLC and Te-Tech provided a practical design specification for this objective. The challenge was accomplished in October 2019. “We’ve been using the air carry systems 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 particularly sturdy and we decided to retrofit additional techniques instead of standard progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of these two techniques was completed in April 2021.
Significant entire life price financial savings
The te-sewpas system supplies important entire life value financial savings when compared to conventional pumped techniques. For a typical installation serving two tanks, like the Stocksbridge project, primarily based on an estimated 25% discount in the electrical power consumption and lowered maintenance necessities, te-sewpas offers a 40% decrease capital price and 50% reduction in operational value in comparison with a pumped desludge system.
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