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.
WEFTEC 2010 arrives in New Orleans
Thousands of engineers, operators, researchers, students, and equipment manufacturers will gather in New Orleans Oct. 2-6 for WEFTEC® 2010. Among the varied and diverse program, several technical sessions and workshops will show ways that wastewater treatment plants can conserve and recover energy.
Also, don’t miss the action of the 23rd annual Operations Challenge.
A new life for old tires
Fisherman Bay Sewer District (Lopez Island, Wash.) owns and operates a 129-m3/d (34,000-gal/d) aerated lagoon wastewater treatment plant. Nitrite and algae in the lagoon effluent presented a tremendous challenge for the plant operator to ensure consistent compliance with plant effluent fecal coliform, total residual chlorine, carbonaceous biochemical oxygen demand, and total suspended solids requirements.
To help stabilize treatment, the district investigated alternatives for removing algae from the lagoon effluent, ultimately finding an unconventional and cost-effective solution in a constructed wetland with tire-chip media.
Rebuilding through recruiting
Like many utilities across the nation, the Metropolitan Sewer District of Greater Cincinnati (MSD) is facing significant challenges resulting from a turbulent economy, baby boomer retirements, concerns of an aging infrastructure, and record high unemployment. Each of these factors contributes to uncertainty for the future.
To combat this challenge, MSD, undertook a multilevel succession plan focused on recruitment and public outreach.
Not just a 'water problem'
Investment in U.S. infrastructure systems is critical to keeping U.S. globally competitive, report says
Coming in the next issue:
Riding the wave
Making changes within a wastewater treatment plant can be like dropping a rock into a still pond: The shockwaves seem to go on forever. Unexpected waves usually cause a lot of headaches. But when the consequence can be predicted, there is an opportunity to reap some benefits from riding the waves.
In recent years, combining fats, oils, and grease (FOG) management with codigestion in anaerobic digesters has become the big cowabunga. This issue includes discussions on keeping sewers free of FOG and understanding the business side of FOG codigestion.
Investigating thickening and dewatering
Solids treatment makes up a large chunk of every plant’s budget, so optimizing each step of the process is a must.
In the October issue, you’ll read about how one plant optimized its polymer use. Plus, learn about a new set of guidelines to help operators perfect gravity belt thickener performance, and find out the keys to selecting the right type of thermal drying system.
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