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 option in comparison with conventional 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 serious housing improvement, the transient to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working price. The relocation additionally allowed for an upgrade 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 main settling tanks adopted by biological treatment 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 process upstream of the primary settlement tanks.
Simple, low opex sludge pumping
For this important duty, MMB chosen the te-sewpas pulsed air raise pump system supplied by Te-Tech Process Solutions. The self-contained unit incorporates a four.6kW duty facet channel air blower, actuated air control valves, air manifold and control panel housed inside a weatherproof GRP enclosure and is delivered to website totally 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 permits the frequency and length of desludging to be adjusted to permit the sludge to consolidate thus eliminating any potential ‘rat-holing’ and guaranteeing consistent desludging.
The unit can be positioned near the tanks that it serves with flexible air delivery hoses routed via ducts to every of the desludge chambers. pressure gauge nuova fima ราคา delivered is hot and as a result there isn’t any want for thermal lagging or insulation. Each te-sewpas unit can serve up to 4 primary or humus tanks with typical particular person air delivery 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 control panel, MMB determined to combine the te-sewpas controls into the central PLC and Te-Tech supplied a functional design specification for this objective. The challenge was completed in October 2019. “We’ve been utilizing the air carry systems of varied 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 robust and we decided to retrofit extra methods rather than typical progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” เกจวัดแรงดันถังแก๊ส of these two techniques was accomplished in April 2021.
Significant entire life value savings
The te-sewpas system supplies significant entire life value savings when compared to conventional pumped methods. For a typical installation serving two tanks, just like the Stocksbridge project, primarily based on an estimated 25% reduction in the electrical energy consumption and reduced upkeep necessities, te-sewpas supplies a 40% lower capital price and 50% reduction in operational cost compared to a pumped desludge system.

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