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.
Going It Alone
Faced with a consent order to eliminate sanitary sewer overflows (SSOs), the City of Lawton, Okla., needed to act quickly. After a thorough inspection of its collection system, the city knew what work had to be done, but it needed to decide how to do it: Take the traditional route of contracting the work, or perform the work itself.
To gain greater quality control over the periodically scum removal from its secondary anaerobic digester, the Hanover Sewerage Authority (Whippany, N.J.) developed procedures to perform the job in-house.
Sleuthing Collection Systems
Urban underground collection systems often are so complex that simulating the flow path of stormwater runoff can be difficult in large or older cities. Researchers are working on a novel approach that would give stormwater managers an
edge in designing and reconfiguring collection systems for meeting new conditions.
Coming in the next issue:
Sizing Denitrification Filters. Extensive modeling enabled designers to develop cost-effective denitrification processes for two very different treatment plants.
Hard Lessons, Simple Truths. Restoring large water systems requires the willingness to learn from experience — and time
Testing the Watershed. North Carolina’s NPDES Discharge Monitoring Coalition Program enables basinwide monitoring and analysis.
Taking the Long View. The journey toward sustainable water resources management begins by determining the most important water issues and indicators.
Double Duty. Continuous backwash filtration techniques can serve as attached growth processes for biological conversion of nitrogen and polishing units for phosphorus removal.
Let It Snow. A membrane bioreactor system provides the flexibility and level of treatment needed for a seasonal ski resort.
Biological Limitations. Most wastewater treatment professionals assume that biological is better when it comes to nutrient removal, but chemical processes may be better at achieving strict effluent phosphorus limits.