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 … Continue reading →
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 … Continue reading →
In this article we review how the use of inverters can reduce the mechanical stresses on pipework leading to premature failures and bursts. Inverters control the speed of pumps and in these applications, centrifugal pumps, which allow the control of pressure. The pump affinity laws state that the pressure generated by a centrifugal pump is … Continue reading →
Condenser Control: In a chilling circuit, the high-pressure gas from the compressor needs to be turned into a high-pressure liquid so that it can be expanded back to a gas, absorbing heat as it does it. This is chilling. The device that turns the gas back to a liquid is appropriately named a condenser. A … Continue reading →
At the Smurfit Kappa facility in March, Cambridgeshire, there are three reel transport systems to carry heavy drums of paper into the corrugator machine that produces cardboard. When one of the systems travels empty, everything is fine; however, when it travels carrying a heavy drum of paper the momentum from the load may cause the … Continue reading →
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 … Continue reading →
Introduction Invented thousands of years ago by the Greek mathematician Archimedes on the occasion of his visit to Egypt. It was used to lift a pool of water to higher levels, usually to transfer water into irrigation channels. It consists of a screw (a helical surface surrounding a central cylindrical shaft) inside a hollow pipe. The Roman screw … Continue reading →
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 … Continue reading →
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 … Continue reading →
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