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Preacquisition Environmental Site Assessments: Avoiding Common Errors and Omissions
The 1986 Superfund Amendments and Reauthorization Act (SARA) established an 'innocent-purchaser' defense to environmental liability from ownership of contaminated...

Decision Framework for Assessment of Leaking UST's
A computer-based environmental planning tool, designed to help mitigate the environmental problems associated with leaking underground storage tanks (UST) is presented in this article....

Hazardous Waste Impacts on the Highway Planning and Property Acquisition Process
Since the advent of increased public awareness concerning hazardous waste and the enactment of statutes governing these wastes, hazardous waste has become an important component impacting...

The Evolution of Sludge Thickening Practice
An analysis of contemporary thickening practice is presented with a brief review of the genesis of each type of thickening. A summary of thickening capital and operating costs for three...

Dewatering Municipal Sewage Sludges?Selecting a Process
A sequential review is made of key considerations in selecting an optimum dewatering process, including its simplicity of operation and performance capabilities. Selection criteria further...

Comparison of Centrifuge Performance on Oxygen Activated Sludge
This paper compares the performance of centrifuges processing high purity oxygen activated sludge with units processing conventional activated sludge. Comparisons are made both for thickening...

Improved Centrifuge Designs for High Cake Solids
The new generation of advanced centrifuges pioneered by Humboldt Wedag can readily produce 30 ? 2% TS cake on most raw and digested primary and waste activated sludge, wherein the primary...

Toxicity Reduction in Soil-Based Treatment System
With the introduction of environmental; regulations such as RCRA, HSWA, CERCLA and SARA, the treatment of hazardous wastes in soil-based systems is required to be protective of human health...

Composting as BDAT for Solvent (F Wastes) Contaminated Soils
The biological treatability of the contaminated soils at a former coating and resins facility was investigated in the laboratory using small scale composting reactors. The soil treatment...

Fate and Effect of Carbon Tetrochloride and O-Xylene on Anaerobic Systems with Sulfate Reducing Bacteria
The fate and effects of o-xylene and carbon tetrachloride on methanogens and sulfate reducing bacteria were investigated using serum bottles. Up to 750 mg/1 of o-xylene did not cause any...

Composting Works for Small Wastewater Treatment Plants
The City of Cooper City, Florida, faced with the undesirable position of relying on outside contractors for sludge disposal needs, undertook the task of developing a self-sufficient sludge...

Aerobic Thermophilic Digestion or Liquid Composting of Municipal Sludges
A study funded by Supply and Services Canada through the Wastewater Technology Center of Environment Canada, and the Province of British Columbia is being undertaken over a two year period...

Design of Solidified/Stabilized Sludge Landfills
Rehabilitation of highly moist, compressible, and heavy metal-containing wastewater treatment sludges for final disposal in a landfill setting requires consideration of several factors....

Computerized Data Processing, Displays and Groundwater Flow Analyses of the Stringfellow Hazardous Waste Site
Several types of data, maps, and figures were obtained from various sources involved in the investigations and monitoring at the site. This information was discretized, and a computerized...

Simulation of Oxygen Dynamics in the Vadose Zone
A microcomputer model VIP (Vadose Zone Interactive Processes) was developed as an extension of the RITZ model to provide a mathematical description of land treatment systems for the disposal...

Fate and Transport of an Acid Waste in Soil and Groundwater
A fate and transport study at a closed acid waste pond located on the shore of San Francisco Bay indicated the potential of native soil and groundwater for retarding the movement of contaminants...

Weathering of Constituents at Land Treatment Sites
The objectives of this research were to: 1) determine the leachability of metals and organics from soils at hazardous waste land treatment sites; 2) evaluate the mobility of hazardous...

The Distribution of PCB Contaminated Sediment in the Kalamazoo River Valley, Michigan
Heightened environmental awareness beginning in the 1970s focused upon lowering contaminant levels in the Kalamazoo River system through the improvement of water quality. The Michigan...

Environmental Analysis of Sludge Disposal Options
In a Court-ordered agreement to eliminate disposal of sludge from its treatment plants into the ocean, the City of Los Angeles was required to evaluate alternatives for transporting and...

Water Oxidation of Sludges and Toxic Wastes
Waste treatment technologies such as subcritical and supercritical water oxidation processes offer innovative alternatives to vexing sludge and toxic wastewater treatment problems. This...

 

 

 

 

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