WE&T Magazine

Mar07Cover.jpgWater 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.


March 2007, Vol. 19, No.3

Featured Articles

Prerequisite Pretreatment

Prerequisite Pretreatment.jpg

Absent adequate pretreatment, membranes may experience buildup of trash, hair, lint, and other fibrous materials, while facing increased risk of solids accumulation and damage. Eventually, such effects could reduce a wastewater treatment plant’s hydraulic capacity or impair effluent quality.


Cold and Clean


Imagine being responsible for wastewater treatment at the South Pole. The National Science Foundation (NSF; Arlington, Va.) is.

Its primary scientific research base, the McMurdo Research
Station, is situated on the Ross Sea roughly 2200 mi (3540 km) south of New Zealand.  



Cracking the Microbial ‘Black Box’ of Activated Sludge

A new research development could give water quality experts a leg up in re-engineering existing plants and designing more efficient and reliable ones in the future for removal of nutrients, particularly phosphorus.        

Read more

Coming in the next issue:

  • A Model Decision. An understanding of fluid dynamics combined with innovative modeling helped a utility determine how best to expand digester capacity.
  • Clarifying CFD Modeling’s Benefits. Using computational fluid dynamic modeling, engineers can improve clarifier capacity greatly to accommodate peak wet weather flows.
  • Succeeding at Simulation. As wastewater process simulators become increasingly powerful, users of these tools must understand their potential as well as their pitfalls.
  • Making Scents of Hydrogen Sulfide Limits. Many people believe that odors signal a health concern. This misperception can be a problem for odorous sites and their neighbors because the odor-detection limits for sulfur compounds typically are much lower than their health-related limits.
  • Single Solution. Sometimes, less is more. To ensure adequate peak flow treatment, a Virginia utility discovered that a single-stage activated sludge system could provide the capacity its two-stage system couldn’t handle.
  • Zapping Odors. Polarized ionization provides reliable, cost-effective odor treatment without chemicals. Electrical current charges air with the ability to rip apart odorous compounds.