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.
Drought and deluge
compliance with permitted levels of heavy metals in wastewater discharges is
hard enough when conditions are ideal, but the challenge becomes far more
difficult when you’re operating biological treatment lagoons and ideal
operating conditions deteriorate.
Pipe and site constraints work against Plan A
During emergency repair work to a massive
prestressed concrete cylinder pipeline in Baltimore in 2009, several unknown
problems forced the project team to adjust to changing conditions while
sticking to a tight schedule and budget.
Waste not, want not
further research how astronaut urine can be used as a source of energy in outer
Coming in the next issue:
Data makes the difference
utility decision should be based on solid data. Improving the collection, analysis,
and use of such data as laboratory tests, collection system assessments, flow
calculation and measurements, and energy production and use all leads to more
it comes to physical and chemical analyses, sensors and probes can provide
quick readings as well as centralized access to data with a supervisory control
and data acquisition system. But making sure those tools are working properly
takes extra effort. The article, “Sensor calibration, maintenance, and
validation,” will instruct readers on lessons learned from operating advanced
instrumentation to support nutrient removal.
article, “A process of elimination,” will show the power of leveraging targeted
data collection for larger projects. A new entrant in sewer evaluation
techniques removes unlikely inflow and infiltration sources first, saving
resources for priority areas.
examination of data also enables facilities to make the most of their
investment dollars. Utilities that aggressively have pursued energy-efficiency
improvements and on-site generation opportunities have been able to reduce
energy costs by as much as half. The article, “Put your energy inefficiency to
work,” explains how even though these reductions usually require capital
investment, carefully selected and managed projects can save more than they
cost to complete, freeing up operating monies for other budgetary needs. The
article focuses on getting the most from energy savings performance contracts.
Also in this issue
It’s a small world
A highly visible decentralized reuse facility in Anaheim, Calif., demonstrates
innovative and practical approaches to water recycling and conservation.
Growing more nimble.
upgrades to a membrane bioreactor slashes the power bill while improving
compliance and operability.
Researchers at USGS and NOAA study the effects of oyster aquaculture on
A lab in a pill.
McMaster University condense a water contaminant detection method into a capsule
inspired by breath-freshening strips.