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.
Restrictions on land application, increased transportation costs, and concerns about greenhouse gas emissions have sparked wastewater utilities’ interest in alternative solids processing technologies. At the same time, incineration facilities have become more fuel-efficient and
environmentally friendly. But can incinerators be considered “green” alternatives for solids processing? The answer is yes.
No Space? No Problem!
What do you do when a growing community is replacing aging septic systems with new, centralized wastewater infrastructure, but space constraints at the existing treatment plant limit expansion? Marco Island, Fla., replaced its contact stabilization process with modified Ludzack–Ettinger
(MLE) and membrane bioreactor (MBR) processes. The upgrades not only increase treatment capacity from 3.5 to about 5.0 mgd (13,200 to 18,900 m³/d) but also provide high-quality reuse water suitable for irrigating condominium landscapes and golf courses.
Green, But at What Cost?
It doesn’t matter where you look. “Green” is everywhere: in the grocery store, around the office, at the wastewater treatment plant. That’s because green is in. Green is good. But it’s also got some people wondering: Is green always smart?
Coming in the next issue:
Low-Impact Development. San Francisco’s green approach to stormwater management promises to reduce energy use, increase natural habitat, and enhance the quality of urban life.
The Search for Sustainable Solutions in Wastewater Infrastructure. Much can be learned from recent work in Europe as well as the United States.
Now What? The soils spring some surprises during trenchless construction.
Cold Nitrification. A Wisconsin utility experiments with IFAS to meet ammonia limits during the winter.
Green Strategies for CSO Control. Landscape choices, such as green roofs, tree planting, rain gardens, and pocket wetlands, compliment engineered CSO solutions.
BMP Sampler. A Delaware agency tested several structural BMP retrofits to compare pollutant removal rates.