IDS are ABB Inverter specialists. We specify, install, commission, repair, service and hire variable speed drives.
Severn Trent Water are saving 14 tonnes of CO2 per annum by applying an inverter to an Archimedean Screw. Blaise Ford from IDS worked with Bill Edwards and Lee Tuckwell from Severn Trent Water, to apply inverter technology to an Archimedean Screw. At the Severn Trent Water Netheridge site there are three Archimedes screws, Duty/Assist/Stand-by, 110kW, star delta starting with two 20 year old motors and a recently installed IE3 motor on screw Pump No1….
Weedscreen cleaners are essential for rural pumping stations pumping water out of dykes. Without them, the pumps would get choked with weeds and pumping performance would fall with the risk of local flooding. It is important that these weedscreen cleaners are kept in efficient operation. The alternative to a weed screen cleaner is an expensive manual intervention to rake out the weeds. These weedscreen cleaners are usually PLC controlled. It consists of a grab on…
ABB variable speed drives improve energy efficiency with payback of less than three years at a Severn Trent Water sewage treatment works. Severn Trent Water is saving 15,000 kWh per year after installing two ABB variable speed drives at its Edwinstowe filter bed sewage treatment works in Nottinghamshire. The sewage treatment works includes a stone filter bed that requires a minimum circulation flow. If the inflow to the stone filter bed drops below its 75…
Sludge Density Pump Control or Reactive Pump Control (RPC) Introduction Sludge is created when a liquid containing solids is settled. Typically, this can be in PSTs (Primary Settling Tanks) or Humus Tanks in sewage treatment works. Alternatively, it can occur in mineral processing plant in clarifiers. The pumps that take the sludge from the bottom of these tanks have to be controlled. If they do not pump enough, the tanks fill with sludge and solids…
Our engineers are used to visiting large industrial plants, remote water treatment sites as well as mines and quarries. Whilst the scenery en-route to these premises can be breathtaking, it made a welcome change for us to visit the picturesque seaside town of Weymouth. SEA LIFE Weymouth is set across a 7 acre Park with over 2,500 creatures to see in both indoor and outdoor exhibitions. They got in touch with IDS as we have…
Archimedean Screws are efficient, low-head, high-volume pumps that have been used for thousands of years. They are particularly useful for pumping liquids with high solids content. Previously it has been thought that inverter control of these Screws didn’t save energy, but we, at IDS have engineered a solution that does produce energy savings, as well as a number of other benefits: The Benefits of Fitting Inverters to Archimedes’ Screws Energy Saving — by using our…
Extract fans are in common use to remove harmful dust and fumes or transport material within factories. Whatever their use, they rely on duct air velocity to ensure the material is kept in the airflow and does not settle out and cause a blockage. An Irishman, Sir George Stokes first developed a theorem that related fluid velocity to the force applied to an object within the fluid, now commonly known as Stokes’s Law. In simple…
Archimedes’ Screws (normally called screws) are widely used by the water industry, usually used for pumping at the inlet of Water Recycling Centres to lift the flow and allowing a subsequent gravity fall through the works. These screws are known for their efficiency, simplicity, ability to handle high suspended solids and capacity to cope with a wide range of flows. Who Says Inverters Don’t save Energy on Archimedes’ Screws? In the past, tests with inverter…
Inverter Drive Systems, Managing Director, Blaise Ford, talks about the benefits of the Reactive Pump Controller (RPC) exclusive to IDS. Reactive Pump Controller Video In sewage works, the pumps on the primary settling tank are normally controlled by timer alone and by definition they pump more sludge than you need to. IDS use the features of an ABB inverter to measure the viscosity of the sludge, and in turn, the percentage solids. As you pump the viscosity…
CONTROLLING THE THICKNESS OF SLUDGE AT SOURCE Abstract Primary and co-settled sludges are commonly removed from settlement tanks using timed, pumped, auto-desludge systems that are neither sensitive to the variable flux of settleable influent material nor sense the thickness of the sludge removed, resulting in thin sludge being produced which requires significant thickening before digestion and are expensive to transport by road tanker. The patented reactive pump controller, developed by IDS, senses the sludge thickness…
