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.
Warming up to thermal dryers
When deciding whether to install a thermal biosolids drying system, a municipal wastewater treatment plant should examine the quantity of biosolids produced, the present cost of disposal, the duration of the current available disposal option, capital and operating costs of the equipment, and future expansion of the facility. The plant should also assess potential treatment processes to determine whether they will be compatible with current treatment plant processes or will require a stand-alone facility.
Finding a 'Class A' solution
The emulsion polymer used to condition solids makes up a significant portion of the Morris Forman Water Quality Treatment Center’s annual chemical budget. Operations and management (O&M) personnel want to improve polymer consumption to both cut costs and make solids processing operations more stable. So, the center added an automated control system to one of the centrifuges to optimize the polymer dose. Read more
Legend has it that many years ago, somewhere outside Chicago,
a memorable oil spill occurred. This wasn’t your average burst petroleum pipeline or wrecked tanker ship. No, by this account, a chemical plant leaked a load of palm oil — the stuff used for deep-frying — into the local sewer system. This leak made it all the way down to the wastewater treatment plant (WWTP), and in some quantity, too. As winters go in the Midwest, it was a cold one, and all the palm oil froze.
Coming in the next issue:
Running the rehabilitation gamut
Whether the driving force is meeting mandates, restoring capacity, or prolonging useful life, sewer rehabilitation is a major undertaking. This issue includes the stories of three projects:
- Fort Lauderdale, Fla., squeezing a 20-year, $740 million citywide water, wastewater, and sewer infrastructure overhaul in 10 years, including $50 million in trenchless technology repairs;
- Conover, N.C., taking immediate action to eliminate SSOs from nearly 100-year-old sewers that serve the city’s most prominent neighborhood; and
- Indianapolis, Ind., finding great value and longevity in an old technology, shotcreting.
Living in a watershed world
As populations grow worldwide, even areas rich in water resources are realizing that actions in one place reverberate throughout a watershed.
In the southern part of Ontario, Canada, long-term planning combined with targeted monitoring is providing information needed to design future upgrades to treatment plants that discharge to the Grand River. The river serves as the receiving stream for most wastewater treatment plants and source of many drinking water supplies, so protecting and improving its water quality is essential
In Pennsylvania a state-run program is taking a different means to the same end. This program is familiarizing operators with new on-line monitoring equipment and process monitoring and control techniques to optimize effluent quality at existing plants. The ultimate goal is to improve surface water quality at the intakes of downstream drinking water facilities.
Whether planning for tomorrow or making the most of today, the need to look at the big picture is clear.
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