US Water Treatment Plant – Online Turbidity Meter Trial
A Water Treatment Works in Georgia, US, recently trialed a TurbSense® online turbidity analyzer from Pi (supplied by Pi’s US technology partner, Chemtrac Inc.). The instrument was installed on the Raw Water inlet alongside a different manufacturer’s surface scatter turbidity meter. The results of the instruments were compared against a HACH 2100N Laboratory Turbidimeter. The…
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Variable Speed Drive (VSD) Control to Reduce Swimming Pool Electricity Bills
A VSD is an electronic device which enables a pump motor to be turned up or down thereby increasing or lowering the pump speed. Most pool recirculating pumps are over specified for the duty required and as such, there is scope using VSDs to turn them down when possible and save considerable amounts of money…
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Probe Fouling
Many different sites ranging across the whole water use industry have a daily struggle to keep instrumentation functioning correctly due to sensor fouling. However, did you know that… …self cleaning and self flushing systems are now available from Process Instruments for most types of sensors?…these fouling removal systems can extend the life of sensors and…
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Pi Controllers – Top Ten Innovations
If you have used a Pi controller you will know that they give you unrivaled control options but did you know that… …Pi’s controllers also offer individual security for up to 20 named individuals? …Pi’s controllers have always given flexibility but now Pi’s controllers can accommodate up to 16 sensors of any description? This Focus On…
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Northern Ireland Water Online DO Meter Trial
Introduction Northern Ireland Water (NIW) recently trialed three dissolved oxygen analyzers (DO meters) in parallel. These were installed at Culmor Wastewater Treatment Plant side by side in the same aeration lane, where measurements were recorded every minute for 6 months. After processing more than a million points of data, the OxySense from Process Instruments (Pi)…
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Coagulant Dose Determination in 5 Minutes!
Process Instruments (Pi) is known for making the best online Water Quality Analyzers on the market. However, did you know that… …Pi also supplies standalone laboratory based analyzers for determining coagulant dose in 5 minutes? …Pi also manufactures and supplies portable versions of some of their online water analyzers? This Focus On will highlight some…
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Saving Time and Money with PID
Did you know that… …PID can save you money by offering better process control? …PID can help you maintain a setpoint, even with a variable process? …the days of over complex and confusing PID are over? …Pi can tailor a PID system to your exact requirements? You may never have to touch those settings again!…
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Correlating the UV254 Water Quality Parameter to Other Organics Parameters
You probably know that the UV254 water quality parameter is a measurement of the absorbance of light by a water sample at 254nm wavelength and often can be used to correlate with other water quality parameters but did you know that… …the absorbance can be used as a cheaper, easier and more reliable surrogate than…
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OxySense for aeration control
You probably know that online dissolved oxygen monitors are crucial for controlling the oxygen available to the microbes in an aeration lane or oxidation ditch but did you know that… …typically up to 50% of the cost of running a wastewater treatment plant with aeration is the cost of the electricity to run the blowers?…
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Coagulation Control
Most people in the water treatment industry know that achieving the correct coagulant dosing level can be challenging at times. Maintaining an optimum dosage is crucial to achieving the best water quality possible, which includes an optimum reduction in organics for disinfection by-product (DBP) control. A plant operator may use historical data, jar tests, or…
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