Improving Final Clarifier Performance Through Simple Cost-Effective Modifications
As more communities become concerned about raising user fees to fund new water and wastewater systems, getting the most out…
Is ‘Zero Discharge’ Realistic?
At first glance, “zero discharge” (ZD)¾eliminating the discharge of any liquid waste to the environment¾seems like an idea of unqualified…
Planning for Sludge Disposal in the Year 2010, The Sacramento Experience
Few municipalities in California or the nation will argue that handling and disposing of wastewater solids ids not a major…
Removal of Selenium from Petroleum Refinery Wastewaters
Selenium is a constituent of petroleum, present at 0.03 – 1.4 parts per million. Crude oils from the San Joaquin…
Optimizing Existing Treatment Systems
Communities are concerned about the need to raise user fees to fund new water and wastewater treatment systems. To get…
Reduction of Selenate from Agricultural Drainage Water Using Anaerobic Bacteria Grown on Algal Substrate
Agricultural drainage water in parts of California’s San Joaquin Valley contains selenium (Se) and other substances shown to be harmful…
Keeping Cost from Creeping Controlling a Project’s Budget and Schedule
In engineering utopia, the unknown would be known, designs would be efficient, construction crews would have realistic schedules, and the…
Case History: OWASA Operation of the Nutrified Sludge Process at the Mason Farm WWTP, Chapel Hill, North Carolina
Enhanced biological phosphorus removal (EBPR) technologies convert soluble phosphorus to a solid form through microorganisms which uptake soluble phosphorus. While…
Startup and Initial Operation of Egg-Shaped Anaerobic Digesters at Lincoln, Nebraska,
Like many of today’s municipalities, the City of Lincoln, Nebraska, faces challenges with long-term wastewater residuals management. To meet these…
Design Of The Lower Kula Water Treatment Plant
Water for the up-country areas of Maui is supplied through a series of three parallel systems which wrap around Haleakala…
Integrated Environmental Management of Refinery Waste Streams
EPA has promulgated numerous regulations over the last few years that impact the design and operation of refinery environmental control…
Management of Submittals to Reduce Liability
This paper discusses the liability exposure of participants in the construction process and proposes a refinement of the specification of…