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.
Sizing Denitrification Filters
Although different in many respects, the Littleton–Englewood (Colo.) Wastewater Treatment Plant (WWTP) and the Orange Water and Sewer Authority (OWASA) Mason Farm WWTP (Chapel Hill, N.C.) both must adopt denitrification filters to meet increasingly stringent limits on nutrients in their effluent.
Most wastewater treatment professionals assume that biological is better when it comes to nutrient removal. Biological nutrient removal processes are proven to meet moderately low total nitrogen and total phosphorus standards without chemicals or excessive sludge. But rising energy costs and stricter nutrient limits are prompting some tough questions.
As deadlines loom and progress seems elusive, Chesapeake Bay still serves as a model for other water quality programs
With just 3 years to rehabilitate the bay as pledged in the Chesapeake Bay Agreement, wastewater treatment plants are busy with upgrades while environmental groups weigh in on the progress. With such high stakes and a high profile, Chesapeake Bay is being closely watched by other regions, from Atlanta to the Pacific Northwest
Coming in the next issue:
Reduce Sewer Congestion. Well-designed FOG management programs help minimize SSOs.
A Dam Good Idea. Inflatable dams help control wet weather flows in Detroit-area sewers.
Just Do It. Sacramento County, Calif., found that when it comes to asset management, actions speak louder than words.
Nitty Gritty. Straight answers to complicated questions about how grit settles.
The Finest. Headworks screening systems are undergoing a quiet revolution.
Beyond Dissolved Oxygen. Respirometric measurements to determine when treatment is complete.