Titles

Creating a brand new $25 million public sewer system with no seed money may sound crazy to most municipal officials, but the Town of Acton, Massachusetts did it and was out of the red within the first few years. Now that Acton is 15 years into the operation of the system, they have eliminated chronic septic system problems, captured targeted economic development, paid off more than half of the...

The South Bayside System Authority (SBSA) provides conveyance, treatment and disposal of wastewater for approximately 200,000 people in the South San Francisco Bay area. The conveyance system consists of four remote pump stations discharging to a common force main comprised of approximately 14.5 km (9 miles) of 610 to 1370 mm (24 to 54-inch) diameter reinforced concrete force main pipe, all...

This paper presents a novel process that hybrids contact stabilization and anaerobic digestion to create a novel process that can treat municipal wastewater while generating savings in energy as well as lowering the sludge yield. In this process, the aerobic sludge stabilization tank and anaerobic sludge digester are connected in parallel and part of the anaerobic digester sludge is recycled back...

Baker No. 3 pump station is one of six (6) storm water pump stations owned and operated by the Trinity River Watershed (TWM) Department of the City of Dallas, Texas (COD). These pump stations are designed to minimize flooding along the Trinity River corridor within the COD limits. Baker No. 3 pump station is under construction and scheduled to be in operation by June 2015. Trinity Watershed...

In anticipation of reaching full treatment plant operating capacity and changes in the biosolids disposal regulations, the City of Lakeland, Florida decided to pursue improvements and expansion of the existing solids processing at the Glendale WRF. A design memorandum was prepared for the City presenting various processing options. Several meetings held with City representatives, representatives...

The City of Columbia (City) Department of Utilities and Operations Wastewater Maintenance Division (WMD) has a significant amount of underground assets in need of continuous inspection by in-house personnel. The system includes a total of 30 miles of forces sewer main, 100 miles of large gravity sewer main (>15”) and 970 miles of small gravity sewer main (<15”) for a total of...

To comply with benzene NESHAP (National Emission Standards for Hazardous Air Pollutants) and MON (Miscellaneous Organic NESHAP) regulations, in 2009 a midwestern chemical plant WWTP was modified and expanded and restarted with two new above ground covered equalization tanks and two new above-ground recirculated aeration tanks. Use of all unlined earthen basins, including a primary sedimentation...

Conventional activated sludge modeling approaches have assumed that reactors are either completely mixed, or equivalent to a group of completely mixed reactors in series. In most cases this is sufficient, as most well-aerated tanks (aerated either mechanically or with diffused air) achieve a good level of mixing through the aeration process. In some cases, however, a lack of complete mixing can...

Funding for wastewater projects is a constant struggle in small communities. The town of Bristol, New Hampshire received an administrative order to address effluent violations at the town's wastewater treatment plant. The town sought federal and state grants to assist with the costs associated with a new chlorination/dechlorination facility in order to comply with their National Pollutant...

Water Resource Reclamation Facilities (WRRFs) in the Chesapeake Bay watershed face regulatory pressures to treat to low effluent total nitrogen (TN) levels. Many WRRFs are now required to remove TN to below 3 mg/L, either on a mass load allocation or concentration basis, and some facilities are faced with even more stringent effluent limits. Conventional process configurations in the form of 4 or 5 stage BNR (Bardenpho) and/or tertiary denitrification filters are typical for treating to these stringent TN limits. The purpose of this paper is to document the performance of the Fairfax County Noman M Cole Jr. Pollution Control Plant (NCPCP), a 67-MGD WRRF that utilizes an alternate approach to Enhanced Nutrient Removal (ENR).

In March 2008, the Kansas City chapters of American Institute of Architects (AIA), American Planning Association (APA), American Public Works Association (APWA), and American Society of Landscape Architects (ASLA) began meeting for the very first time on regional design issues. The issue that brought these organizations together was sustainability and, more specifically, the region's desire to be...

The City of Indianapolis is currently implementing a 20-year, 1.7 billion Combined Sewer Overflow Long-Term Control Plan (CSO LTCP). Indianapolis is pursuing a variety of control measures to implement the LTCP, including deep tunnel storage, treatment plant expansions, consolidation sewers, satellite storage and treatment, and local sewer separation. The LTCP configuration was developed from...