WE&T Magazine

WET_cover1_Sept15_90Water 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.


September 2015, Vol. 27, No.9

WEFTEC 2015 in Chicago offers many different types of learning. Find out about the Opening General Session, the Sewer History Exhibit, and Operations Challenge.  Read more

Featured Articles

Riding the water technology S-curve

feature 1 art The water sector is changing. Various macro forces are driving this, and these changes create opportunities for new solutions at both technology and systems levels.
The challenge is trying to understand what is likely to change, within what timeframe, and who will be the likely winners and losers. This analysis, like all good plans, should be data-driven and fact-based. 


Entering a golden age of innovation

feature 2 art As the water sector closes the door on 100 years of activated sludge treatment (celebrated last year), it enters a new golden age for water resource recovery — the likes of which have not been seen for decades. Innovations are enabling facilities to be more energy efficient, use a smaller footprint, and recover more of the valuable resources embedded in wastewater.  



U.S. EPA finalizes the Clean Water Rule amidst controversy

news art

Landmark rule aims to clearly define and protect tributaries that affect the health of downstream waters 

To clarify better which waters are covered by the Clean Water Act (CWA), the U.S. Environmental Protection Agency (EPA) and the U.S. Army Corps of Engineers on May 27 finalized the Clean Water Rule. EPA stated the new rule is grounded in law and the latest science, shaped by public input, and ensures that “waters protected under the Clean Water Act are more precisely defined and predictably determined, making permitting less costly, easier, and faster for businesses and industry.” 

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Coming in the next issue:
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Coming up in the October issue

Chances are permit limits never will be relaxed. Tomorrow’s water facilities will need to do a better job than today’s. In addition to new technologies and processes, this march forward will require continual improvement of existing systems.

The October issue of WE&T will present several examples of best practices across a range of topics. From adopting and implementing automation and control technologies to choosing the right headworks equipment to squeezing the most energy out of solids processes, this issue will share the steps others have taken to improve.

The headworks is a good place to start. Managers must be equipped to choose the best fine screen to help downstream treatment processes. This requires looking at all the types of fine-screen systems available and understanding their benefits and limitations. The goal is to remove as much inorganic waste as possible, while keeping organics flowing to feed energy recovery and generation systems.

A quickly spreading type of energy recovery technology is the next stop. Thermal hydrolysis subjects primary and/or waste activated sludge to high temperatures and high pressures for a short time. Rapid depressurization ruptures cells and breaks down extracellular polymer, making more material bioavailable for anaerobic digestion. This also kills pathogens.  This article will present what European users have learned that can help U.S. installations generate more biogas and less solids. 

Further downstream, effluent needs to be polished. Learn how recent experience with deep-bed anthracite filters at various drinking water and wastewater treatment facilities in the U.S. and Israel has led to increases in efficiency and expanded capacity without more filters. 

Real-time measurement and automation can help manage all of these processes. But first, the sensors, communications, and protocols for these tools needs to be set. Another article describes the three main uses of real-time monitoring and provides six steps to help facilities begin to reap these benefits.