Water Environment & Technology (WE&T) is the premier magazine for the water quality field. WE&T provides information on what professionals demand: cutting-edge technologies, innovative solutions, operations and maintenance, regulatory and legislative impacts, and professional development.
The Fine Art of Screening
Historically, coarse screens have been used to protect downstream pumps and unit processes from being damaged by large debris within wastewater collection systems. But coarse screens can allow some debris to pass through and collect in the downstream processes or piping systems, clog pipelines, and increase maintenance requirements. Use of a fine screen can solve these problems, but conjures up its own set of design considerations and challenges.
Operations Challenge 2006
Texans ruled the competition at the 19th Annual Operations Challenge at WEFTEC®.06 in Dallas. The TRA CReWSers from the Trinity River Authority in Arlington, Texas — last year’s Division I champions — successfully defended their home turf for another first place finish. In Division II, the top two spots went to Texas teams; the San Antonio Power SAWS and the Dallas Aqua Techs, earning first and second place, respectively.
In places that face seasonal water shortages, it’s an idea whose time appears to have come: Storing treated wastewater deep underground during rainy months, then pumping it back up to the surface for irrigation purposes during dry periods.
Such underground water banks are one of the hottest new applications of aquifer storage and recovery (ASR) technology. In some quarters, they’re also the source of some controversy.
Coming in the next issue:
Our Annual State of the Industry Issue. What factors will influence wastewater construction in the next few years? What trends do experts see in the global water economy? How are utilities grappling with growing pains? You’ll find it all in our 2007 outlook.
Remediation to the Rescue. Continual biological augmentation brings new life to an old sand filter, eliminating the need for costly replacement.
Two Birds, One Stone. Creative design gives this North Carolina disposal facility a dual purpose.
Going for the Kill. Alternative high-rate disinfection technology has proven effective in wet weather applications.
Pipe Dreams. When using cured-in-place pipe, collection system owners and engineers must consider a host of factors to ensure quality.
Digital Dosing. Advancements in metering pump technology hold great promise for utilities.
Lateral Moves. Eliminating infiltration and inflow from private service lines is easier than expected.