Mike Froom, Business Development Director for Te-Tech Process Solutions in Southampton, UK, explores the advantages of a pulsed air carry sludge pumping choice compared to typical pumped techniques.
เกจแรงดัน -sewpas unit at Stocksbridge.
When Yorkshire Water decided to relocate Stocksbridge Wastewater Treatment Works 2km to the south to permit a significant housing growth, the transient to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working price. เกจ์วัดแก๊สหุงต้ม allowed for an improve from thirteen,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 removing unit and two 15.5m diameter major settling tanks adopted by biological 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 critical obligation, MMB chosen the te-sewpas pulsed air lift pump system equipped by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW duty facet channel air blower, actuated air management valves, air manifold and management panel housed inside a weatherproof GRP enclosure and is delivered to website 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 duration of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and making certain constant desludging.
The unit could be located near the tanks that it serves with versatile air supply hoses routed by way of ducts to every of the desludge chambers. The air delivered is sizzling and in consequence there isn’t any want for thermal lagging or insulation. Each te-sewpas unit can serve up to 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 two humus tanks. Rather than utilizing the usual management panel, MMB decided to integrate the te-sewpas controls into the central PLC and Te-Tech offered a useful design specification for this function. The challenge was accomplished in October 2019. “We’ve been using the air carry methods of assorted 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 robust and we decided to retrofit additional systems rather than standard progressive cavity pumps at both Stillington and Sutton-on-the-Forest.” Installation of these two methods was completed in April 2021.
Significant complete life value savings
The te-sewpas system supplies important whole life value financial savings when compared to conventional pumped methods. For a typical installation serving two tanks, like the Stocksbridge venture, primarily based on an estimated 25% reduction within the electrical power consumption and lowered upkeep requirements, te-sewpas supplies a 40% decrease capital price and 50% discount in operational value compared to a pumped desludge system.
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