Set it & Forget it
Water & Wastes Digest
August 2005
By Bob Elliott
Keeping the environment clean is a top priority for the authority. Wastewater is processed biologically, with none of the chemicals that are typically used, and achieves complete nitrogen removal. Specifically, the process removes CBOD, suspended solids, ammonia as nitrogen, nitrates, nitrites and phosphorus.
No Longer Singing the Blues
Water & Wastes Digest
March 2005
By William H. Simendinger
Composite valves incorporated into Blue Plains Advanced Wastewater Treatment Plant outperform expectations while helping improve operations
Mission Possible
Water & Wastes Digest
October 2004
By Megan Larson
When the conditions are right, the Struvite will rapidly form crystals that spread throughout a pipeline forming a concrete-like crust.
Silent Treatment
Water & Wastes Digest
October 2003
Megan Rapaduski
Michael Goltz, superintendent of the Mt. Horeb, Wis., Wastewater Treatment Plant, settled on the Val-Matic Swing Check Valve because it specifically addressed the slamming and clogging problems exhibited by the previous swing check valves.
Focus On Troubleshooting Water Softeners
Water Quality Products
March 2003
Water Quality Products went in search of an expert to bring you the top troubleshooting tips for valves. The search led to Jay Runkle, employed in technical services at Pentair Water Treatment. According to Runkle, issues quickly can be sorted out if you know what to look for. Here are Runkle?s top 10 dilemmas, accompanied by probable causes and suggested antidotes.
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New Valves Maintain Piping System Integrity at High Temperatures, Provide Increased Chemical Reaction Time
Water & Wastes Digest
March 2003
PVDF (polyvinylidene fluoride), a flouroplastic, is the material of choice for high purity water and chemical applications due to its excellent purity, temperature, surface and strength characteristics. The material expands as the temperature increases. George Fischer, Inc. designed the first SYGEF® PVDF High Temperature Resistant (HTR) diaphragm valve; it incorporates secondary sealing components manufactured from high purity TFM within the valve body to absorb the different expansion characteristics of the valve materials.
A New Option in Valve Actuators Strengthens Control of Filtering Operations
Water Engineering & Management
January 2003
Water works engineers are now turning to a new generation of pneumatic valve actuators that are capable of executing the instructions of electronic control systems with the necessary precision to accurately control effluent flow. Surprisingly simple but rugged in construction, this new breed of actuators also is meeting the need to reduce downtime, as some of the first ones to debut in 1981 are still in operation without needing a spare (new) part.
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New Ductile Iron Check Valve Stops Water Hammer In Louisiana Municipality
Water & Wastes Digest
August 2000
After suffering years of water hammer problems and the resulting effect on maintenance personnel and equipment, the St. Charles Parish Municipality in Louisiana needed a product that would save them both time and money. Milliken Valve Company of Bethlehem, Pa., provided the answer.
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