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.
2015 in Chicago offers many different types of learning. Find out about the
Opening General Session, the Sewer History Exhibit, and Operations Challenge.
Riding the water technology S-curve
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
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
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
Coming in the next issue:
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.
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