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บทความ เกจวัดแรงดัน

Yorkshire Water uses 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 lift sludge pumping choice in comparability with standard pumped techniques.
A te-sewpas unit at Stocksbridge.
When pressure gauge 10 bar decided to relocate Stocksbridge Wastewater Treatment Works 2km to the south to allow a significant housing improvement, the brief to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low operating cost. The relocation additionally allowed for an improve from thirteen,000 inhabitants 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 major settling tanks followed by biological therapy in seven trickling filters with two sixteen.7m humus settlement tanks. Sludge produced in the humus settlement tanks is delivered to a chamber alongside the tanks after which flows by gravity to re-enter the method upstream of the first settlement tanks.
Simple, low opex sludge pumping

For this crucial duty, MMB selected the te-sewpas pulsed air lift pump system provided by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW obligation side channel air blower, actuated air control valves, air manifold and management panel housed inside a weatherproof GRP enclosure and is delivered to website fully assembled and tested. 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 period of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and ensuring consistent desludging.
The unit could be located close to 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 in consequence there is not a need for thermal lagging or insulation. Each te-sewpas unit can serve up to 4 major 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 utilizing the usual management panel, MMB decided to combine the te-sewpas controls into the central PLC and Te-Tech supplied a functional design specification for this objective. diaphragm seal was accomplished in October 2019. “We’ve been using the air carry techniques of varied makes on our websites for the final 20–25 years,” says Yorkshire Water’s Wastewater Asset Planning Sponsor Jan Buczylo, “The te-sewpas is particularly robust and we determined to retrofit further systems instead of conventional progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of these two systems was completed in April 2021.
Significant entire life price savings

The te-sewpas system offers important complete life cost financial savings when compared to conventional pumped methods. For a typical set up serving two tanks, just like the Stocksbridge challenge, based on an estimated 25% discount within the electrical energy consumption and decreased upkeep necessities, te-sewpas supplies a 40% decrease capital price and 50% discount in operational price in comparability with a pumped desludge system.
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