Among the problems created by the proliferation of wipes is the unpleasant, time-consuming and costly job of periodically pulling rags from pumps.
Many clean-water plants have tackled the problem by installing choppers or grinders that macerate the wipes into particles that pumps can easily pass. Now United Kingdom-based Clearwater Controls (doing business as DERAGGER in the U.S.) offers a technology that instead uses intelligent pump control to allow wipes to pass without cutting.
The DERAGGER+ anti-ragging device monitors the pump’s power signature and detects when a wipe is interfering with the pump’s operation. At that point, it runs the pump through a reverse cycle that releases the wipe, which then passes through when normal operation is restored.
Read full article from TPO Treatment Plant Operator: Here’s a Way to Deal With Rags and Wipes Without Grinding or Chopping
Blockages and failures occur more often with some pump types, but for many of today’s water operators, there is a solution. Here, we take a look at how progressive cavity (PC) pumps are solving some of the water industry’s key pumping challenges.
Pumps are integral to the successful operation of wastewater treatment works (WwTW). Whether moving untreated water, transferring dewatered sludge or metering chemicals, the pumps in use at WwTW need to be easy to monitor, robust, reliable and able to handle a variety of materials. But not all pumps are the same.
Blockages and failures occur more often with some pump types, and with water companies delivering efficiency savings that have resulted in more unmanned sites, the discovery of process problems can be delayed, sometimes resulting in pump downtime. For many of today’s water operators, there is a solution. Here, we take a look at how progressive cavity (PC) pumps are solving some of the water industry’s key pumping challenges.
Monitoring and maintenance
Many of today’s WwTW were originally designed to be manually supervised by on-site operatives who checked for blockages, process or equipment problems and corrected them in a timely manner. Due to partial process automation, many sites are now unmanned, with maintenance planned at specific intervals.
When unforeseen problems occur, such as pump blockages due to ragging, or lack of suction lift due to grit contamination causing excessive pump wear, a maintenance team has to be despatched to rectify the issue. However, some PC pumps, such as SEEPEX’s Smart Conveying Technology (SCT) range, can be remotely monitored, making it easier for problems to be anticipated and enabling predictive maintenance.
For example, the use of variable frequency drives (VFD) and the ability to monitor speed means operators can foresee when maintenance will be required. As the pump stator wears, the pump speed increases; once this is identified, the SCT pump can be very quickly adjusted to match its original capacity, keeping efficiency high and providing more time to plan for maintenance.
Read full article from World Pumps: Solving wastewater problems the PC way
Effective solids handling is paramount in achieving a free-flowing food waste disposal system. As in any process in which solids and debris are present in a liquid stream, food waste can be particularly challenging to handle without properly conditioning the liquid. A complete solids handling system is composed of multiple grinders and a positive displacement rotary lobe pump. Vogelsang offers two styles of solids reduction products – the RotaCut Inline Grinder and the X-Ripper Twin-Shaft Grinder.
The X-Ripper performs a coarse grind for large hard solids in the liquid stream such as: bones, hooves, wood fragments or whole carcasses.
The RotaCut is a precision cutting device that oprates much differently than the X-Ripper. The RotaCut performs a fine grind on the solids flowing in the liquid stream. The RotaCut also captures any hard objects and removes them from the liquid stream before they get a chance to damage any downstream equipment.