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 advantages of a pulsed air raise sludge pumping choice compared to conventional 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 major housing improvement, the brief to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working value. The relocation additionally allowed for an improve from 13,000 population to 15,000 for the 2030 design horizon.
The new £15.sixty five million works consists of duty/standby fine screens, a vortex grit removing unit and two 15.5m diameter main settling tanks followed by organic therapy 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 after which flows by gravity to re-enter the method upstream of the primary settlement tanks.
เครื่องมือวัดpressure , low opex sludge pumping
For this crucial obligation, MMB selected the te-sewpas pulsed air carry pump system equipped by Te-Tech Process Solutions. The self-contained unit incorporates a four.6kW duty side channel air blower, actuated air control valves, air manifold and control panel housed inside a weatherproof GRP enclosure and is delivered to web site fully assembled and tested. Each pulse of air lifts a quantity of sludge and discharges it from the sludge discharge pipe. A programmable timer within the PLC permits the frequency and duration of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and making certain consistent desludging.
The unit can be situated close to the tanks that it serves with versatile air supply hoses routed by way of ducts to every of the desludge chambers. เกจวัดแรงลม delivered is sizzling and in consequence there is no want for thermal lagging or insulation. Each te-sewpas unit can serve up to 4 primary or humus tanks with typical individual air supply hose size up to 35m.
At Stocksbridge, a single Type B te-sewpas unit with duty/standby air blowers serves the two humus tanks. Rather than using the usual control panel, MMB decided to integrate the te-sewpas controls into the central PLC and Te-Tech offered a functional design specification for this objective. The venture was completed in October 2019. “We’ve been utilizing the air lift methods of various makes on our sites for the last 20–25 years,” says Yorkshire Water’s Wastewater Asset Planning Sponsor Jan Buczylo, “The te-sewpas is particularly sturdy and we determined to retrofit extra techniques rather than typical progressive cavity pumps at both Stillington and Sutton-on-the-Forest.” Installation of those two techniques was completed in April 2021.
Significant complete life value savings
The te-sewpas system provides significant complete life price financial savings when in comparability with conventional pumped systems. For a typical installation serving two tanks, just like the Stocksbridge venture, primarily based on an estimated 25% reduction in the electrical energy consumption and lowered maintenance requirements, te-sewpas supplies a 40% lower capital price and 50% reduction in operational value in comparability with a pumped desludge system.

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