Evaluation of Point-of-Use Treatment Devices
The contamination of drinking water is a matter of concern to many communities and people. Small community water systems and individual residences supplied by private wells face severe...
Impact of Dynamic Loading on Bio-Phosphorus Removal
The ability of bench-scale activated sludge biological phosphorus removal systems to produce effluents with consistently low phosphorus concentrations was influenced by influent TOC/COD...
Integrated Assessment of the Acid Deposition Problem
To perform fully integrated assessments of the acid deposition problem it is necessary to combine models of all major aspects of the problem, including emissions, atmospheric transport,...
A Physical-Chemical Interpretation of Mean and Extreme Values in Acid Precipitation
A physical-chemical model is used for the interpretation of mean and extreme concentrations in acid precipitation. Chemical concentration frequency distributions tend to be skewed, as...
Metal Contamination of Sludge by Water Supply Systems
The authors present a cursory review of the source of metals in sewage sludge and an analysis of limited sludge metal data and drinking water data that supports the hypothesis that a water...
Health Effects Evaluation?Ocean Disposal of Sludge
Court rulings have recently allowed the ocean disposal of municipal wastewater sludge in certain cases. This paper describes a methodology which was developed to determine acceptable loadings...
Transport of Halogenated Organics in Saturated Groundwater Flow: Theoretical and Experimental Results
This paper presents the development of a mathematical model to describe transport of organic chemicals in saturated soil columns and compares model predictions to experimental results....
Solubility of Aromat6ic Solutes and Sorption onto Soil in Polar Solvent/Water Systems
An investigation was performed to evaluate the solubility and sorption of aromatic solutes onto soil from an aqueous phase containing polar solvent. This work relates to the evaluation...
Uncertainty in Unsaturated Zone Pollutant Transport
The portion of a pollutant spill transported to an underlying aquifer is uncertain due to the stochastic nature of precipitation and uncertainty in the geochemical properties of the contaminant...
Design of a GAC Water Treatment System for Radon
The author describes the design of a granular activated carbon (GAC) treatment system for the removal of radon from a public water supply....
Innovations in Army Treatment of Remote Site Wastes
The U. S. Army Construction Engineering Research Laboratory (USA-CERL) is currently evaluating new methods for waste treatment at remote sites which will eliminate or mitigate problems...
Health Hazard Assessment of Waterless Remote Site Waste Management Technologies
The United States Army Construction Engineering Research Laboratory (USA-CERL) has had an ongoing research program addressing remote site waste treatment technologies. The potential for...
Factors Influencing Oxygen Depletion in Green Bay
Dissolved oxygen depletion in the lower Fox River (Wisconsin) and Green Bay (Lake Michigan) have historically been tied to discharges of organic matter from municipal waste treatment plants...
Impact of Metallic Solders on Water Quality
A description is given of first-draw water testing at residences in a Long Island, N. Y. , water district. Results for heavy metals, particularly lead, leaching from the solder and plumbing...
Adsorption and Release of Heavy Metals in Contaminated Soil
This study investigated the adsorption and release rates of toxic metals in soil type associated with hazardous waste sites common to the Northeastern United States. Five heavy metals...
On-Site Containment of PCB-Contaminated Soils
A remedial investigation/design project, with subsequent post-closure monitoring, was conducted for upland areas containing PCBs at an industrial site in New Bedford, Massachusetts. A...
Enforcement Support at an NPL Landfill in Colorado
Since 1964, the City and County of Denver has owned the Lowry Landfill site, located approximately 15 miles (24 km) southeast of Denver. During the period of July 1967 through 1980, the...
Benefits of Particle Size Management for Biological Wastewater Treatment
Particle size distributions in wastewater can be used to monitor and model the transformations that occur during wastewater treatment processes. Typical size distributions of organic contaminants...
Hydrogeologic Controls on Leachate Migration
The Brown Station Road Landfill is a municipal solid waste disposal site operated by Prince George's County, Maryland. The work described herein was conducted as part of a...
Dewatering--Avoiding Its Unwanted Side Effects
The undesirable side effects that sometimes occur when dewatering for construction or mining are presented, including: ground settlement due to dewatering; deterioration of timber piling;...
Return to search