Conceptual Framework for Regression Modeling of Ground-Water Flow
The author examines the uses of ground-water flow models and which classes of use require treatment of stochastic components. He then compares traditional and stochastic procedures for...
Study of Stochastic Planning and Design of Multireservoir Systems
A new approach named Lumped to Discrete Programming (LDP) coupled with constrained stochastic optimization and successive approximation approach amongst reservoirs gives promise to subtantially...
Evaluation of the Effects of Temperature and Oxygen Concentration on Lignin Biodegradation
Color in natural waters has been attributed to humic substances which are believed to originate as by-products of lignin biodegradation. The purpose of our research was to examine the...
Potential for Nitrate Removal from Groundwater Supplies Using Biological Deintrification
Nitrate concentrations in groundwater supplies have been increasing over the years throughout many areas in the U. S. to the point of posing potential health dangers to a multitude of...
Role of Air in Improving First-Stage RBC Performance
A four-stage RBC (rotating biological contactor) treatment plant having two parallel trains is used to treat combined municipal and industrial dairy waste from a city with a population...
A Modified RBC Design: Performance Evaluation
An RBC (rotating biological contactor) system was designed using Pall rings type 40, and tested under high organic surface conditions. Influent soluble BOD averaged at 55 mg/l, equivalent...
Fluidization of Biomas Covered Sand Particles
The expansion behavior of the fluidized bed reactor support medium is important in its design and analysis. Steady state and dynamic behavior of fluidized bed expansion were compared with...
Industrial NPDES Toxicity Goals
Biological monitoring of NPDES (National Pollution Discharge Elimination System) effluents is becoming a reality in several EPA regions. While the advantages are genuine the loopholes...
Anaerobic Treatment of Phenol: Degradability, Toxicity and Kinetics
Anaerobic biodegradation of phenol was demonstrated at up to 1000 mg/L in batch serum bottle studies and 1900 mg/L in anaerobic filters. In batch serum bottle studies, concentrations of...
A Bench-Scale Study of Wastewater Aquaculture Using the Duckweed
A continuous flow bench scale reactor was used to evaluate nutrient removal and growth characteristics of the duckweed, Lemna minor. Such a system can further an understanding of the treatment...
An Innovative Wastewater Management Program
An innovative wastewater management program is described which has been implemented in Orange County, Florida. The wastewater treatment facility utilizes the Bardenpho advanced biological...
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...
Sludge Treatment Design Lands Innovative Funding
The design of sludge treatment facilities for the 10 mgd Ithaca, New York, wastewater treatment plant incorporates both proven technology in the form of gravity thickening and anaerobic...
A Survey of Anaerobic Digester Operations
In 1981, the ASCE Task Committee on Anaerobic Digestion conducted a survey of wastewater treatment plants throughout the country regarding the use of anaerobic digestion. The two-part...
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...
Issues and Problems of Coastal Management in Italy
The paper aims to outline present situation and possible future developments especially concentrating on management of beaches and water fronts. Population density had been for many centuries...
Moving Society's Wastes Through the Coastal Zone
This paper considers the use of incinerator ships for the destruction of liquid hazardous waste. Needless to say, such a system requires movement of wastes through the coastal zone. This...
The Maryland Dredge and Fill Permit Process Handbook
The current dredge and fill permit process in Maryland has become a complex procedure involving many agencies from each level of government. The process by which a permit is obtained for...
The Failure of Section 312 of the CZMA
Coastal Zone Management Act, as amended, provides for a continuing evaluation of a state's Coastal Zone Management Program. This paper reviews the history and evolution of...
Coastal Resource Management: The Ecosystem Perspective
A definite need exists to generate coastal management strategies that focus upon integration of the complex interactions between biological, physical, chemical, and geological processes...
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