Environmental Engineering Research Needs
In June 1979 a National Science Foundation—ASCE workshop was convened to prepare a report suggesting top-priority research needs in civil engineering for the 1980s. The field was split...

Toxic Substances in Drinking Water: An Overview

Toxics and the Safe Drinking Water Act

Maintenance Dredging and Toxic Substances

Source Condition Influence on Toxic Spill Behavior

Health Considerations in Use of Tertiary Effluents
The nature of the agents involved, their health implications and needed areas of research are considered. There are infectious and toxic agents in wastewater that may well carry over when...

Physicochemical Parameters that Regulate Mobilization and Immobilization of Toxic Heavy Metals

Distribution of Toxic Heavy Metals in Marine and Freshwater Sediments

Sediment and Elutriate Toxicity to Oyster Larvae

Temperature-Toxicity Model for Oil Refinery Waste
A continuous flow kinetic model to predict the effects of temperature on the toxicity of oil refinery waste to the algae Selenastrum capricornutum...

Sewage Chlorination Versus Toxicity—A Dilemma?
The need to control toxicity resulting from wastewater chlorination is reviewed, and means for minimizing the problem through process optimization of the chlorination process is best achieved...

Undesirable Plant Responses with Sewage Irrigation
A farmer using sewage effluent for irrigation is faced with the management problem of an uninterrupted supply of nutrient laden water that may contain toxic heavy metals. The yield and...

Metal Toxicity to Sewage Organisms
The Michaelis-Menten model of enzyme inhibition is a convenient method to measure toxicity and to give insights to toxic behavior in pure culture and simple substrate conditions. A linear...

Destruction of Bacteria and Viruses in Seawater
Marine microbial predators destroy enteric bacteria in seawater. Viruses are destroyed by unknown marine microbial antagonists and by a toxic chemical component of the seawater. Viruses...

Activated Sludge ATP: Effects of Environmental Stress
A series of experiments were performed with laboratory scale activated sludge units to determine the effects of various environmental conditions on the ATP content of activated sludge...

Toxicity Measurements in Activated Sludge
Toxicity measurements in activated sludge show that the Michaelis-Menten theory and the theory of enzyme inhibition reveal reproducible data on toxicity and also may reveal, insights into...

Toxic Altitude Propulsion Research Facility (TAPR)

Biodegradation of Malathion
Laboratory studies using bench-scale activated sludge units and a Warburg respirometer show that an aerated aqueous microbial system can rapidly remove the organo-phosphate insecticide,...

Deep Injection Disposal Well for Liquid Toxic Waste
On November 30, 1961, the deepest known pressure injection disposal well for liquid toxic waste was completed on the Rocky Mountain Arsenal near Denver, Colorado. Total depth of the well...

 

 

 

 

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