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.
Tanks full of savings
In a 130-km2 (50-mi2)
watershed in the northwest suburbs of St. Louis, Mo. — an area including
Bridgeton, Hazelwood, and Florissant — the challenge to the Metropolitan St.
Louis Sewer District (MSD) was to provide a cost-effective solution to
eliminate SSOs and basement backups. Instead of building the traditional relief
tunnel — an expensive and time-consuming proposition — MSD chose to pump the
wastewater overflow into giant tanks at two sites. The excess flow remains in
the tanks until it can be released gradually and safely back to the existing
When it rains...
The Austin region in Texas is subject to
frequent flash floods. Over time, the Austin Water Utility (AWU) has
implemented flood preparedness measures at its two large water resource
recovery facilities (WRRFs), including operational modifications, structural
improvements, and facility expansion.
Flushing away the discord
Wastewater sector and
manufacturers work toward solution for non-disposable wipes in collection
Coming in the next issue:
places that serve as hubs of action for communities and businesses often are
the same places where stormwater needs arise. Roads, rail tracks, large storage
areas, and other epicenters of activity support commerce and economic
development but produce impervious surfaces and commercial processes that can
lead to stormwater challenges.
the Pacific Northwest, the Port of Olympia handles nearly 130 million
board-feet of logs each year. Every log that moves through the port leaves
behind bark and other organic material that accumulates and is washed into
Puget Sound. To prevent this organic material from depleting the water’s oxygen
supply and carrying particulates and other pollutants into the water, the port
and its consultants turned to wastewater and leachate treatment techniques not
often used for stormwater to create a unique solution. The resulting active
treatment system not only meets permit limits, but also adds extra oxygen into
contrast to the complex systems at the port, at Target Field Station, a
central, multi-modal transportation hub and community gathering space in
downtown Minneapolis, planners used low-impact development practices to achieve
stormwater runoff reductions. Tree trenches, green roofs, and bioretention, as
well as cisterns that collect runoff for reuse in an adjacent industrial
facility help the stormwater management system not only meet, but also exceed
requirements. The Target Field Station project exemplifies what can be achieved
if all partners and reviewing agencies are engaged throughout the planning and
Also in this issue
of a rotary drum thickener during construction saves money and mitigates risk.
cost-effective odor control through a series of small changes.
Diamond in the rough.
Redeveloping a water
resource recovery facility along with a riverfront plan solves odor problems
and improves aesthetics.