The James Island (S.C.) Public Service District (JIPSD) provides services for fire protection, wastewater collection and solid waste disposal. In 2011, JIPSD commissioned the construction of a wastewater pump station equipped with a pair of submersible pumps powered by variable-frequency drives on a programmable logic controller (PLC).
The city of Montmorillon, France’s pumping station is located in a busy urban area downstream from a retirement home. In addition to managing a heavy flow of wastewater, the station also takes in storm water, often including large quantities of solids, which led to frequent clogging issues. Positioned 8.5 meters below ground level, the pumps were awkward for operators to access and unclog. As a result, in 2012, the station operators commissioned Xylem to develop a sustainable solution to these frequent and costly clogging issues.
The Oneida Nation considered several alternative concepts before the development of a tribal enterprise on 450 acres located 30 miles east of Syracuse, N.Y. The originally favored shopping mall had even advanced into a set of architectural drawings until a pact was reached with state government that scrapped the retail project in favor of building New York’s first Indian-owned gambling casino, recalled Bill Hollenbeck, whose career spans 20 years in facilities management at the venture.
The scenic community of Waupaca, Wis., derived its name from the translation of a Native American term meaning “clear water.” It seems doubly ironic that community wastewater passes through a facility known as the Crystal River Lift Station, once notorious for its three pumps becoming clogged with filthy debris since their installation in October 2002.
Cost/benefit analysis has been the cornerstone upon which utility engineers base most retrofits of their infrastructure. In an era of rising maintenance costs and limited funding, it has become even more important for projected results to meet expectations. Management of Jacksonville (Fla.) Electric Authority (JEA) had no reservations about approving a recent conversion of the 3,700 gal per minute (gpm) (70 TDH) Oldfield Crossing Pump Station (OCPS) to a booster pump station.
Robert Dohm knows a lot about fluid-handling pumps. He spent much of his working life as a pump mechanic at an internationally prominent chemical company’s West Virginia plant. The large pumps had to function reliably in some of the most caustic process environments imaginable. Dohm recalls every pump at the specialty chemical plant as specifically engineered to withstand the process flows, from their metal casing to the seals, coatings, bearings and controls.
The sewer utility for the city of Andalusia, Ala., is among scores of municipal and regional operations across the nation that benefited from the American Recovery and Reinvestment Act of 2009. Alabama alone received $55.57 million worth of stimulus funds for energy-related conservation projects. Andalusia qualified for a $250,000 U.S. Department of Energy Block Grant administered through the Alabama Department of Economic & Community Affairs for a relatively modest commitment of $25,000 in matching city funds.
Located across the Columbia River from Portland, Ore., the city of Vancouver, Wash., has distinguished itself as a leader in effective sanitary sewer system management by maintaining adequate capacity, proactively maintaining sewage infrastructure and minimizing the cost for existing and new ratepayers.
Clogged pump stations are among the most common problems confronting wastewater utility systems. The city of Haverhill, Mass., was no exception, but five recently completed duplex stations are engineered specifically to avoid such incidents, according to Paul Jessel, the city’s supervisor of wastewater collection.
The U.S. Clean Water Act became the preamble for a volume of more stringent water and wastewater treatment regulations. Scores of engineers and utility plant managers have searched since then for reliable processes, technologies and equipment to help make treatment facilities comply with the evolving guidelines. Many earlier-generation plants are undergoing upgrades to meet present and future water quality standards.
Rolling topography can present an uphill battle for many wastewater utilities, particularly when certain types of development—hospitals, nursing homes, daycares, restaurants and schools—add high-solids wastewater along the lines.
The city of Reno recently introduced an initiative that promises to significantly reduce the annual line item for the upkeep of the lift stations leading to the treatment plants. In the pristine air of the eastern slopes of the Sierra Nevada Range, the city of Reno has battled fat, oil and grease (FOG) that builds up in the wet wells of the lift stations in the high desert valleys north of the city.
Visitors to the Northwest Stream Center near Everett, Wash, will soon have a close-up view inside the world of cutthroat trout. A unique exhibit will show how the fish progress from fresh spawn to hatched fingerlings and eventually into 8- to 10-in.-long mature fish within a carefully created artificial stream. Adopt-A-Stream-Foundation (AASF), an environmental education and restoration group, is nearing completion of their new Trout Exhibit, expected to become a key attraction at the organization’s environmental learning center.
Granite City, Ill., recently joined the increasing number of municipalities that have invested in SCADA technology to more effectively manage their community wastewater systems. Improvements in the hardware and software have advanced the technology’s capabilities far beyond the limits of first-generation control systems that reached the market in the 1960s and 70s.
A levee and powerful flood-control pump station that entered service following the devastating 1993 floods helped win the battle to save historic Ste. Genevieve, Mo., during the recent catastrophic floods along the Mississippi River.
The quaint village of 4,400 people, located 64 miles south of St. Louis, was the focus of international attention in 1993 when tens of thousands of volunteers worked valiantly to build an emergency levee to hold back the Mississippi’s record crest of 49.74 ft that year at the Chester, Ill., gage.
In Iowa, rain can fall as a mixed blessing. In the right amount, the economy grows in lockstep with corn and other crops. During heavier storm events, however, even a 2-in. rain can spell trouble for public works officials with the city of Des Moines, Iowa.
More than two tons of high explosives set off in July 2007 shattered the top 10 ft of the Marmot Dam, located along the Sandy River and 40 miles east of Portland, Ore. The project is the state’s largest dam removal project in decades.
It became evident several years ago that the sludge pumps at the main wastewater treatment plant (WWTP) serving the city of Oak Ridge, Tenn., were near the end of their service life. The two, 15-hp centrifugal suction units had operated in their dry pit installation since the 24-million-gal-per-day (mgd) plant’s completion in 1983. Their link in the process chain involved pumping raw sludge off the primary settling tanks to the plant’s four 250,000-gal digesters.