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.
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.
Sewer maintenance group trades in wet well FOG cleanouts for a submersible mixerThe 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.
Intricate pump system helps exhibit function as a balanced ecosystemVisitors 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.
Illinois town plagued by chronic I&I finds benefits in its new preventative maintenance toolGranite 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.
Mississippi River floodwaters nearly claimed Missouri’s oldest community in 1993. The high water was held back this time.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.
Submersible pumps nearly double an Iowa lift station’s capacityIn 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.
Pumps play integral role in Oregon’s largest dam removal in decadesMore 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.
Marmot Dam was demolished July 24, 2007.
When original sludge pumps began failing, a Tennessee town adopted new high-solids-handling technologyIt 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.