Mike Froom, Business Development Director for Te-Tech Process Solutions in Southampton, UK, explores the benefits of a pulsed air raise sludge pumping possibility compared to conventional pumped systems.
differential pressure gauge ราคา -sewpas unit at Stocksbridge.
When Yorkshire Water determined to relocate Stocksbridge Wastewater Treatment Works 2km to the south to permit a serious housing growth, the temporary to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low operating price. The relocation also allowed for an improve 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 removing unit and two 15.5m diameter major settling tanks followed by organic therapy 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 and then flows by gravity to re-enter the method upstream of the primary settlement tanks.
Simple, low opex sludge pumping
For this critical responsibility, MMB selected the te-sewpas pulsed air carry pump system supplied by Te-Tech Process Solutions. The self-contained unit incorporates a 4.6kW obligation facet channel air blower, actuated air control valves, air manifold and control panel housed within a weatherproof GRP enclosure and is delivered to website absolutely assembled and examined. Each pulse of air lifts a amount of sludge and discharges it from the sludge discharge pipe. A programmable timer in the PLC permits the frequency and period of desludging to be adjusted to permit the sludge to consolidate thus eliminating any potential ‘rat-holing’ and ensuring constant desludging.
The unit can be positioned close to the tanks that it serves with versatile air delivery hoses routed via ducts to each of the desludge chambers. The air delivered is sizzling and as a result there isn’t any want for thermal lagging or insulation. Each te-sewpas unit can serve as much as 4 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 utilizing the usual control panel, MMB determined to integrate the te-sewpas controls into the central PLC and Te-Tech supplied a practical design specification for this objective. The venture was completed in October 2019. “We’ve been using the air carry systems of various 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 sturdy and we determined to retrofit extra systems rather than conventional progressive cavity pumps at each Stillington and Sutton-on-the-Forest.” Installation of these two techniques was completed in April 2021.
Significant whole life value financial savings
The te-sewpas system supplies vital whole life value financial savings when in comparison with standard pumped systems. For a typical installation serving two tanks, like the Stocksbridge venture, based on an estimated 25% discount in the electrical energy consumption and reduced upkeep requirements, te-sewpas provides a 40% lower capital cost and 50% reduction in operational value compared to a pumped desludge system.
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