pressure gauge หลักการ ทํา งาน , Business Development Director for Te-Tech Process Solutions in Southampton, UK, explores the advantages of a pulsed air carry sludge pumping choice in comparison with typical pumped methods.
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 transient to Mott MacDonald Bentley (MMB) was for reliability, sustainability and low working value. The relocation also allowed for an improve from thirteen,000 population to 15,000 for the 2030 design horizon.
The new £15.65 million works consists of duty/standby fantastic screens, a vortex grit removing unit and two 15.5m diameter major settling tanks followed by biological treatment 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 and then flows by gravity to re-enter the method upstream of the primary settlement tanks.
Simple, low opex sludge pumping
For this important 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 duty facet channel air blower, actuated air management valves, air manifold and control panel housed inside a weatherproof GRP enclosure and is delivered to site 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 length of desludging to be adjusted to allow the sludge to consolidate thus eliminating any potential ‘rat-holing’ and ensuring constant desludging.
The unit may be situated near the tanks that it serves with flexible air delivery hoses routed by way of ducts to each of the desludge chambers. The air delivered is scorching and consequently there is no want for thermal lagging or insulation. Each te-sewpas unit can serve up to 4 main or humus tanks with typical particular person air delivery hose length as much as 35m.
At Stocksbridge, a single Type B te-sewpas unit with duty/standby air blowers serves the 2 humus tanks. Rather than utilizing the standard management panel, MMB determined to combine the te-sewpas controls into the central PLC and Te-Tech provided a useful design specification for this function. The venture was accomplished in October 2019. “We’ve been using 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 especially robust and we determined to retrofit additional systems rather than conventional progressive cavity pumps at both Stillington and Sutton-on-the-Forest.” Installation of these two systems was accomplished in April 2021.
Significant entire life cost savings
The te-sewpas system offers vital complete life price financial savings when compared to standard pumped systems. For a typical set up serving two tanks, just like the Stocksbridge venture, based on an estimated 25% discount within the electrical energy consumption and reduced upkeep necessities, te-sewpas supplies a 40% decrease capital value and 50% discount in operational price in comparability with a pumped desludge system.
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