Water / Wastewater
New Controller Integrates all Control, Monitoring, Display and Data Logging Features Required for Effective Water Treatment
Burkert’s (Germany) new mxControl multi-parameter controller automates the precise control of process variables within a water treatment system (boiler, cooling or Reverse Osmosis system), by integrating all the control, monitoring, display, and data and event logging functions into one compact, easy- to- configure controller. The mxControl accepts analog inputs from flow, pH, temperature, level, analytical and conductivity sensors, and provides high level computations to optimize the water treatment process. In addition, the controller delivers savings on time, space and equipment costs: one controller hardware specification providing dozens of configuration possibilities, all of which can be quickly downloaded via SD card (supplied) or via USB or optional Ethernet interface.
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Reader Reply Card no 113 New Bacteria in Water Test
Industrial Test Systems, Inc. (ITS) (USA) announced a new, USEPA compliant method for presence/absence determination of Total Coliforms and E. coli in water – EZ Coliform Cult – MUG Test. Each test consists of a sterilised, ready-to-use 120mL bottle containing a premeasured amount of growth media. To run the test simply add the water sample, cap the bottle and then incubate at 35°C for 24 hours (or 25°C for 48 hours). The test works by detecting an enzyme produced by coliform bacteria and a specific enzyme produced by E. coli. If coliforms are present, the liquid sample will change from yellow to blue-green in color. If E. coli is present, the sample will glow a bright blue, fluorescent color when illuminated with a UV light (365nm). Alternatively, the presence of E. coli can be confirmed with the addition of Kovac’s reagent, which produces a red ring as a biochemical confirmation.
Reader Reply Card no 114
Portable Refrigerated Sampler Avalanche®
from Teledyne Isco (USA) is a multi-bottle, sequential/composite water sampler featuring Isco's revolutionary portable refrigeration system. Its unique design provides easy transport and quick setup, even at remote sampling sites. When sample collection is triggered, Avalanche provides up to 48 hours holding time at 3ºC without ice or utilities, saving time and money in stormwater sampling as well as TMDL, watershed monitoring, pretreatment compliance, and other applications requiring versatile control and communications combined with accurate sample preservation.
Reader Reply Card no 115
Technologically Advanced Optical Dissolved Oxygen Sensor for Water Quality Monitoring
Reader Reply Card no 116 In-Situ® (USA) announce that it has released the next generation Rugged Dissolved Oxygen (RDO® ) sensor that
uses the latest optical technology for dissolved oxygen (DO) measurement. For long-term and ambient water quality monitoring, the RDO sensor features a rugged, wiper-free design that excels in demanding environments. The sensor’s abrasion-resistant foil withstands fouling, high sediment loads, and rapid flow rates. The sensor cap’s pre-loaded calibration coefficients simplify set up and eliminate errors that can occur when manually programming other sensors. Designed to respond rapidly to changes in DO, the RDO sensor is an ideal tool for vertical profiling and applications with dynamically changing conditions. “Water quality professionals will again benefit from In-Situ Inc.’s aggressive investment into new product development,” said Bob Blythe, CEO and President of In-Situ Inc. “By improving upon the breakthrough optical DO sensor technology that In-Situ Inc. first brought to market in early 2004, our next generation RDO sensors provide higher quality data and more robust performance at a significantly lower cost than currently available optical DO sensors. Superior optical DO technology combined with the lower total cost of the new In-Situ RDO sensor will essentially render the membrane-based Clark cell electrode obsolete.”
Reader Reply Card no 117 Patent for Valveless Chlorination System
Fluid Metering (USA) is proud to have received a patent for their NEW Chloritrol™ valveless metering system for accurate, maintenance-free injection of sodium hypochlorite for purification of municipal drinking water.
Accurately metering liquid sodium hypochlorite presents a unique challenge because of the fluid’s tendency to out-gas. Many conditions including elevated temperatures, exposure to UV radiation, and cavitation, in addition to, contact with metallic and organic impurities, tend to increase sodium hypochlorite out-gassing. The resulting gas bubbles present a condition known as “gas lock” which adversely affects the efficiency and accuracy of the injection pump’s output. This, in turn, can significantly reduce the amount of chlorine added, and in the worst
case, cause the pump to completely lose prime.
The Chloritrol™ System is a unique valveless duplex pump design. The first pump head is high pressure and injects the sodium hypochlorite directly into the water main. The second pump head functions to remove out-gas bubbles from the inlet side of the high-pressure pump head.
Reader Reply Card no 118 Reader Reply Card no 119 AET October/November 2008
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