Instrumentation and Monitoring

The U.S. EPA report, Evaluation of Energy Conservation Measures for Wastewater Treatment Facilities, provides performance and cost/benefit information to encourage energy conservation...

System solves accuracy drift Problem The Bethpage (N.Y.) Water District metered caustic soda with diaphragm pumps, but accuracy drifted between maintenance periods and the...

Peristaltic metering pump Peristaltic pumps for metering (LPP-M) from Flowrox are designed for pumping diverse slurries and accurately metering a wide range of...

Neptune Quieter Operating Mixers Quieter operating mixers from Neptune Mixer Co. feature steel helical gears, high-quality bearings and high-grade lubricant. The level 9...

In the Battle of Zinc, the Appomattox Water Reclamation Facility is winning. In fact, it has already won. Using lime and soda...

When the Newtown (Conn.) Wastewater Treatment Plant had trouble meeting its nitrogen limit, the plant manager, operator and mechanic worked as a...

Operators at the Grace Creek Wastewater Treatment Plant in Longview, Texas, expect significant savings from an energy efficiency project that includes replacement...

Rockwell Automation AC Drives Allen-Bradley PowerFlex 755 AC drives from Rockwell Automation have an extended power range of 900 kW/1,300 hp and 600/690...

Davie County Public Utilities in Mocksville, N.C., had 11,000 water meters divided into 30 rural reading routes spread across 400 square miles....

The Red River is best known for periodic floods that afflict North Dakota, most notably around Grand Forks. Much farther south, in...

Formulation consumes organic solids Problem Biosolids buildup in the anaerobic lagoons at the Mount Olive (N.C.) Wastewater Treatment Plant was lowering storage capacity. Solution Operators removed...

Concentrations of hydrogen sulfide at the headworks of the Rancocas Road Treatment Facility in Mount Holly, N.J., reached 100 parts per million...

Two parameters The Thermo Scientific Orion benchtop pH/conductivity multiparameter meter from Environmental Express displays two parameters plus temperature at once and provides measurements...

LMI Chemical Metering Pump ROYTRONIC EXCEL Series AD chemical metering pumps from LMI Milton Roy, a Hamilton Sundstrand company, feature microprocessor control options...

Wastewater professionals go by many titles: plant manager, chief operator, environmental coordinator. But “bug farmer”? That’s how Tom Pfiester, wastewater division manager of...

How do operators work after winningconsecutive safety and plant awards from their peers? Harder than they did before, according to Linda Barrier,...

Another set of bad effluent fecal coliform results. This makes four times since the new chlorine system was installed. The plant superintendent...