911 Articles found

Articles

indicates free access

  • Greenhouse gas reduction as an additional benefit of optimal pump scheduling for water utilities

    Greenhouse gas reduction as an additional benefit of optimal pump scheduling for water utilities

    Operations Optimisers, and their subset Pump Scheduling Systems for water utilities target load movement from peak to off-peak periods chasing the tariff differential to achieve energy cost savings. Derceto Aquadapt is a holistic solver and also ...

    Simon Bunn

  • Adapting Success to Quality Based Selection

    Adapting Success to Quality Based Selection

    ABSTRACT When approaching the need within a design and construction project for best value there is a need to ensure a fair, open and transparent procurement process. By adapting an existing practice of Qualifications Based Selection used for ...

    Allen K. Lucas, Daniel Y. Lalande

  • The Coming Capital Crisis

    The Coming Capital Crisis

     Abstract Today’s wastewater utility stands at a crossroads. They can continue to do business as usual (Path A) and see their rates increase at three times the rate of inflation for the indefinite future due to enormous increases in capital ...

    Myron Olstein

  • The Development of the New York City BNR Program

    The Development of the New York City BNR Program

     ABSTRACT: The Long Island Sound Study (LISS), a partnership between the United States Environmental Protection Agency, New York, and Connecticut, was formed by Congress to address water quality concerns related to eutrophication and hypoxia. ...

    Sarah V. Dailey, James G. Mueller, P.E., Keith Mahoney P.E., Norman S. Bradley, P.E., Paul A. Pitt, Ph.D., P.E., Robert D. Smith, P.E

  • York Region’s Water and Wastewater Guidelines and Standards: Consensus Building – the Key to Success!

    York Region’s Water and Wastewater Guidelines and Standards: Consensus Building – the Key to Success!

     ABSTRACTPrior to August 2006, the Regional Municipality of York’s Water and Wastewater Branch was operating with an existing set of Design Guidelines and Standards which were in need of updating. These guidelines and standards were also not ...

    Dean Rurak, Vanessa Chau, Tony Petrucci, Denise Costa

  • Capital Expansion and Facility Upgrade Does your Methodology Fit Your Organization Like a Glove?

    Capital Expansion and Facility Upgrade Does your Methodology Fit Your Organization Like a Glove?

     ABSTRACT The Controversy—Is there one capital delivery methodology that is considered the industry’s “Best Management Practice”? Is there a silver bullet that can defend utilities against the risks and ills of delivering capital programs? In ...

    Jeffrey S. Burkhart

  • Assessing a 25-year Capitalization Program: Using Condition and Criticality Ratings to Set the Priorities

    Assessing a 25-year Capitalization Program: Using Condition and Criticality Ratings to Set the Priorities

     ABSTRACT Malcolm Pirnie, Inc. developed a 25-year plan for re-capitalization of Hartford, Connecticut’s four water pollution control facilities operated by the Metropolitan District Commission (MDC). The plan consisted of developing a ...

    Bridget M. Zwack, Dennis E. Jackson, P.E., Gregory J. Osthues, P.E., Martin S. Overton, Thomas A. Tyler, P.E.

  • Breaking Ground with DBO Contractual Issues

    Breaking Ground with DBO Contractual Issues

     ABSTRACT The City of Clovis (City) chose a public-private partnership approach for the design, construction and operation of the City’s sewage treatment/water reuse plant (ST/WRF). The City chose this approach to achieve a number of ...

    Susan K. Landon, Steven White, Mark Hildebrand

  • A Knowledge Retention Strategy for the Los Angeles Bureau of Sanitation

    A Knowledge Retention Strategy for the Los Angeles Bureau of Sanitation

     ABSTRACT As the baby boomer generation approaches retirement age, utilities are faced with losing the knowledge that has made their daily business processes functional. The US Bureau of Labor statistics estimates that 40% of the nation’s ...

    Varouj Abkian, Charles Turhollow, Margaret Umphres

  • Talent Retention a Key Driver to Workforce Development

    Talent Retention a Key Driver to Workforce Development

    ABSTRACT Development of key employees is more important than ever for North American utilities. Facing the retirement of a large percentage of key managers in the next few years, utility leaders are scrambling to capture the unique institutional ...

    Maria Isbell

  • Integrating Workforce Planning and Performance Management

    Integrating Workforce Planning and Performance Management

     ABSTRACT The statistics abound as to the impact that aging baby-boomers are starting to have on the workforce. To site a few, Business 2.0 magazine projects a a shortage of 5.3 million skilled workers by 2010 and, bringing this closer to ...

    Richard L. Gerstberger

  • Leadership in Challenging Times

    Leadership in Challenging Times

    ABSTRACT As utility professionals, all of us comprehend the unique characteristics of our industry and understand the challenging nature of our business. What we sometimes forget is how important effective leadership is in a risk-filled industry. ...

    Robert W. Hite, Alan W. Manning

  • Making Sense of it All: a New Approach in Transforming Utility Data into Information

    Making Sense of it All: a New Approach in Transforming Utility Data into Information

    ABSTRACT Many utilities are “data rich” but “information poor.” Or, stated differently, utilities, and industry in general, find themselves collecting rivers of data, while very little synthesis of the data is performed. Without data synthesis, ...

    John B. Cook, Edwin Roehl

  • Linking Day-to-Day Operations to Business Strategy

    Linking Day-to-Day Operations to Business Strategy

    ABSTRACT “Identifying and establishing internal and external measures for all divisions that focus on process improvement, better understanding of operating costs, reducing those costs, and streamlining the organization” is presented as a major ...

    Tony Parrott, Biju George, Ryan W. Nagel, Nate T. Lindstrom, Rheagan D. Coffey

  • Behaviour of Selected Sex Hormones in Synthetic Influent of a Pilot-Scale Wastewater Treatment Plant.

    Behaviour of Selected Sex Hormones in Synthetic Influent of a Pilot-Scale Wastewater Treatment Plant.

     ABSTRACT The concentration of seven sex hormones, namely, estradiol (E2), estrone (E1), estriol (E3), ethynilestradiol (EE2), testosterone (TEST), androstenedione (AND) and progesterone (PROG), was studied over time in the liquid and solid ...

    Ruth Marfil-Vega, Makram T. Suidan

  • Comparing Gravimetric and Centrifugal Spin Data: Accuracy of Suspended Solids Results and Process Control Calculations

    Comparing Gravimetric and Centrifugal Spin Data: Accuracy of Suspended Solids Results and Process Control Calculations

    ABSTRACT: The Carbondale Wastewater Treatment Facility is located on the banks of the Roaring Fork River at the intersection of Highway 82 and Highway 133 on Colorado’s western slope. Samples for total suspended solids (TSS) were analyzed by ...

    Sidney Biesterfeld-Innerebner, Ed Fortner, Fred Sirotek, Ralph Bryant, Travis Potter and Michael Lutz

  • Elucidation of Exopolysaccharide Isolated from a Dow Wastewater Treatment Facility

    Elucidation of Exopolysaccharide Isolated from a Dow Wastewater Treatment Facility

    ABSTRACT A UNOX wastewater treatment facility in a Dow Chemical site has experienced major operational challenges as a result of a microorganism producing copious amounts of slime in the activated sludge flocs believed to be involved in viscous ...

    Steven Gluck, Anton Karnoup, Demetrius Dielman, Vickie Langer, Grant Von Wald, Scott Young, June Zhu, John Green Glass

  • Analysis of Mercury in Wastewater by Microwave Digestion Followed by ICP/MS: Comparison to EPA Methods Approved at 40 CFR 136.3

    Analysis of Mercury in Wastewater by Microwave Digestion Followed by ICP/MS: Comparison to EPA Methods Approved at 40 CFR 136.3

     ABSTRACT As a cost-saving measure, the use of an existing microwave digestion system and ICP/MS instrument was investigated for the analysis of mercury in domestic wastewater, industry effluent, storm water, and other aqueous matrices ...

    Charles Lytle, Jason Dahl, Elizabeth Farkas, Jan Wilson, Ron Myers

  • Sublethal Toxicity Identification Evaluation Studies – Potential Impacts of conductive Dissolved Solids

    Sublethal Toxicity Identification Evaluation Studies – Potential Impacts of conductive Dissolved Solids

     ABSTRACT Treated effluent from the Firmenich wastewater treatment plant in Plainsboro, New Jersey (two staged activated sludge process designed for nitrogen and phosphorus removal) is discharged to the Millstone River. The New Jersey ...

    Enos L. Stover, William Gischlar

  • Sure, We Have Lots of Bioreactor Solids… But How Many are Active?

    Sure, We Have Lots of Bioreactor Solids… But How Many are Active?

     ABSTRACT Biological wastewater treatment processes harness the ability of microorganisms to break down and assimilate organic compounds that, if left untreated, cause detriment to the environment. Although this process occurs naturally, ...

    P. A. Whalen, P. J. Whalen, J. E. Cairns, D. R. Tracey