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.
A total of 17,722 water professionals and 995 exhibitors attended WEFTEC.09, the Water Environment Federation (WEF, Alexandria, Va.) 82nd annual technical exhibition and conference, Oct. 10–14 in Orlando, Fla.
Do Your Homework
Thermal drying has become a broadly accepted biosolids management practice in North America and Europe, and the product — heat-dried pellets — is suitable for use as a low-grade fertilizer or biofuel. However, the decision to produce heat-dried biosolids is only the beginning. Utility personnel must be familiar with their solids’ characteristics so they can establish appropriate control limits to produce heat-dried biosolids that best meet market needs.
TRA CReWSers Collect Another Victory at Operations Challenge.09
The 2008 defending champions, TRA CReWSers from the Water Environment Association of Texas, took top honors at the Oct. 12–13 Operations Challenge.09 in Orlando, Fla. Coached by Raudel Juarez, the team of Jacob Burwell, Dale Burrow, Steve Price, and David Brown competed against 40 teams from the United States, Canada, and Argentina — taking home trophies in four of the five events as well as the Division 1 win.
Recent studies are opening doors to understanding how much — and the processes by which — air-derived mercury is transferred to U.S. freshwater resources and fish stocks, as well as how quickly these populations may respond to a reduction of methylated mercury in their environments. For wastewater treatment plants (WWTPs), this knowledge could translate into potential cost savings.
Coming in the next issue:
Theoretical models are powerful tools to help engineers optimize treatment plant design while keeping multiple water quality objectives in sight. They also can help plant managers and operators simulate how an existing plant will react to extreme conditions so they can prepare for those rare occasions.
However, in both cases, computer programs alone are not enough. Experienced engineers and operators are essential ingredients in assuring a truly good solution. Read about the advantages and disadvantages of commonly used models, and how they can help solve real-world problems such as evaluating clarifier capacity and meeting nutrient limits.
Good headworks sets the tone for the rest of the treatment plant. Read about how upgrades and improvements to preliminary treatment systems eliminate unpleasant and, sometimes, unsafe working conditions as well as shrink maintenance needs and time.
These upgrades range from optimizing how screenings are collected and washed to innovative design choices that keep potentially explosive sewer gases safely contained. In each case, the benefits expand beyond such measurable elements as hours worked and pounds of screenings hauled away and extend in to more elusive gains like better operator morale and more appealing work environments.