Xylem has announced that it has been selected by Payson City, Utah, to expand the City’s wastewater treatment plant. The plant expansion will address the needs of this growing community as well as meet current and future nutrient removal requirements.

Nutrient removal is an important process in meeting high quality effluent requirements. Excessive levels of nitrogen and phosphorous disrupt the natural environment and can affect the health of water systems. Furthermore, Prattville's wastewater system was projected to reach its capacity as the population of the surrounding area grew.

Key West is one of America’s most scenic locales. Situated in the Florida Keys southwest of Miami, it is visited by millions of people each year and is home to more than 30,000 year-round residents. While there’s plenty of ocean, potable water is a precious commodity which is piped 125 miles from the mainland.

A forward-thinking not for profit private utility was in need to keep pace with population growth and seasonal flows in a space-constrained, environmentally sensitive resort environment. Walton County, a coastal resort area in northwestern Florida doubles its population during the spring break and summer seasons.

Xylem, an industry leader in mission-critical water treatment solutions, has been selected through a fair and open competitive bidding process to replace eight Rotating Biological Contactors (RBCs) that have reached the end of their useful life at the Cape May County, Municipal Utilities Authority, Cape May Wastewater Treatment Facility.

In December 2009, a non-hazardous liquid waste treatment facility in Wisconsin was exceeding their permitted level of 0.165 ppm tin in their final wastewater effluent discharge to the Publicly Owned Treatment Works (POTW). Additionally, effluent levels for lead and copper also approached permit limits and were a concern to this customer.

Located in Wernersville, Pennsylvania a borough of Berks County, the Robesonia – Wernersville Municipal Authority Wastewater Treatment Facility was prompted to upgrade its filtration process to address two aging traveling bridge sand filters and to meet new state water quality standards, including phosphorus effluent limits.

Xylem has been selected by Severn Trent to supply its innovative ballasted clarification technology, the CoMag® system, at yet another major wastewater treatment works. This new contract at Hartshill (near Nuneaton) follows the successful implementation of the CoMag system.

Heart of the Valley Sewerage District in Kaukauna, Wisconsin required high-purity water to test plant effluent for biochemical oxygen demand (BOD) and other contaminants. Testing is required to ensure that the effluent meets state and federal guidelines before discharge into the Fox River.

League City contracted with CDM Smith to manage the expansion project and design and construct a 4.0 MGD (design) / 12 MGD (peak)treatment facility with an energy, labor, and operational efficient process that would meet exceptionally stringent discharge limits. The facility also needed to ensure Type I or Type II non-potable reuse was available for future irrigation and/or amenity use.

Xylem was contacted by a Mid-Atlantic Water Authority to propose an odor control solution at one of their pump stations. The Authority was treating the odors with a sodium hypochlorite (bleach) solution to varying degrees of success. Downstream hydrogen sulfide levels in the atmosphere were the primary contributors to odor complaints, reports of corrosion, and worker safety issues.

Evoqua Water Technologies LLC was contacted by a South Florida Municipality to provide an odor control solution for a lift station within their collection system. In the past, the municipality had implemented biofiltration for control of atmospheric hydrogen sulfide. However, in recent years the biofilter was removed, leaving the lift station untreated and exposed to high sulfide concentrations.

The City of Los Angeles’ Hyperion Wastewater Treatment Plant is one of the largest in the United States. It serves approximately 9 million people by treating 460 mgd of wastewater. Built in 1949, the plant was designed to treat up to 450 mgd but was forced to reduce secondary treatment in the 1960’s to 120 mgd due to limited secondary capacity.

The Grass Valley Wastewater Treatment Plant provides service for a population of approximately 12,000 people. Situated in California’s Gold Country, the area has some unique challenges that include mine drainage and heavy flows during the winter storm season in the scenic Sierra Nevada foothills. On average, the City discharges 2.1 million gallons per day of treated wastewater effluent to Wolf Creek, a tributary of the Bear River.

The Village of Waterbury Wastewater Treatment Plant (WWTP) is located on the Winooski River floodplain, which poses challenges from significant flooding during the spring runoff and storm seasons to strong algal blooms in late spring. During algal blooms, the plant encounters bright green lagoon effluent high in total suspended solids(TSS), resulting in treatment upsets and inconsistent permit compliance.

When its wastewater treatment plant’s brush aerators reached their end of service life, The City of Tomball replaced them with Xylem's Envirex® Disc Aerators, maintaining compliance and improving reliability.

The Town Branch Wastewater Treatment Plant located in Lexington, Kentucky, USA, serves a population of 130,000—about 60% of Lexington—Fayette County. The plant began operating in 1919, and currently treats almost 11 billion gallons of wastewater annually.