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To prevent the flooding and loss of 50 million worth of equipment in an underground nickel mine, a new effluent water treatment plant (EWTP) was design, procured, built, and commissioned in 20-days. The mine's interim tailings storage facility which was storing the dewatering water was full, and the mine was unable to meet its discharge permit without the construction of the EWTP. The EWTP...

Recently, the State of Florida adopted new rules requiring elimination of open ocean outfalls as wastewater treatment plant effluent management methods by year 2025. The rules require upgrading these WWTPs to comply with effluent TSS, BOD5, total nitrogen, and total phosphorus limits of 5, 5, 3, and 1 mg/L, respectively by 2018 or implementation of alternative treatment and management practices...

A well-balanced O&M program for municipal effluent sewer (STEP) systems results in customer satisfaction and low life cycle costs. Too little maintenance — a “reactive maintenance” approach — leads to premature equipment failure and dissatisfied customers. However, too much maintenance can increase costs unnecessarily. Having tried both approaches over the course of 24...

The Massachusetts Water Resources Authority (MWRA) has begun the process at its Deer Island Treatment Plant (referred to as Deer Island) of replacing over 250 valves that are near the end of their useful life. MWRA awarded a $17 million contract to Carlin Construction Company of Connecticut to replace valves and piping throughout the Deer Island Treatment Plant. Many of these valves are critical...

Recently, the State of Florida adopted new rules requiring elimination of open ocean outfalls as wastewater treatment plant effluent management methods by year 2025. The rules require upgrading these WWTPs to comply with effluent TSS, BOD5, total nitrogen, and total phosphorus limits of 5, 5, 3, and 1 mg/L, respectively by 2018 or implementation of alternative treatment and management practices...

Twenty years after an 8” and 10” diameter vitrified clay pipe (VCP) mainline and 6” diameter lateral grouting project was completed for the City of Naperville, Illinois (a suburb of Chicago), televised, air tested, and exhumed grouted lateral connections were still completely sealed, proving cured acrylamide injection grout is a long–term, dependable solution for infiltration and inflow. Independent third-party laboratory testing supports the claim on cured acrylamide injection n grout’s longevity. A common misbelief is that cured acrylamide injection grout will shrink underground overtime, and does not provide a long–term, permanent solution to control infiltration in sanitary sewer manholes, mainlines and laterals. This manuscript will address the topic of municipal grouting with acrylamide injection grout (AV-100 Chemical Grout) as a proven method for providing a long-term, reliable solution to control infiltration.

In 1983, the NutraSweet Company (NSC) commissioned a hybrid anaerobic treatment system for treating the high-strength wastewater at the site. The anaerobic treatment system has operated continuously from start-up in 1984. The anaerobic treatment facility consists of two upflow reactors with an open or suspended-growth zone in the lower section of the reactor and structural media in the upper part...

The Swatara Township's wastewater plant was submerged in a flood in 2011. With only 24 hours to prepare for this disaster, this paper outlines what we did to minimize the damage, get back on line, and the long cleanup including FEMA reimbursement. The purpose of this paper is four fold, to help operators to:

The Massachusetts Water Resources Authority (MWRA) was created in 1984 by the state legislature to address pollution caused by the discharge of inadequately treated sewage into Boston Harbor. The Boston Harbor Project included reconstruction of the Deer Island Treatment Plant (DITP) to include secondary treatment, and construction of a deep water outfall. Since 2000, wastewater effluent has been...

The concentrations of several heavy metals (Arsenic, Cadmium, Copper, Lead, Nickel, Selenium, and Zinc) in biosolids were measured at 30 randomly selected publicly owned treatment works (POTWs) located in the Midwestern United States. Two reference laboratories using standardized and federally accepted analytical protocols provided the analyses. The sampling, transport, analysis, and reporting...

The Oklahoma City Water Utilities Trust (OCWUT) reconciled several sanitary sewer overflow data sources and performed an informal condition assessment of their wastewater collection system in response to a Request for Information from the U.S. Environmental Protection Agency. Based on the assessment, staff implemented a targeted preventative maintenance program and developed several capital...

This manuscript will summarize the water and wastewater rate and utility benchmarking performed by Citizens Energy Group in 2013-2015 in support of its water and wastewater rate increases that were approved by the Indiana Utility Regulatory Commission in 2014. This was the first rate increase sought for the water and wastewater utilities since the utilities were acquired from the City of...