Indoor Air Quality Simulations with the Mass Balance Model
Recent studies relate energy conservation measures, specifically to reduction of the air exchange rate of residences, with potential adverse health effects due to human exposure to increased...

Significance of In-Stream Denitrification
In-stream denitrification rates were calculated using a simultaneous nitrogen and dissolved oxygen mass balancing technique. Anaerobic, laboratory, incubation of stream bottom samples...

Development of a Simplified Nitrogen Mass Balance Model in a Macroalgae Dominated System
A seasonably variable nitrogen uptake rate has been established for Ulva in Mumford Cove, Conn. This rate has been verified using three separate water quality analyses each of which assume...

Use of Drainage Control to Minimize Potential Detrimental Effects of Improved Drainage Systems
Improved drainage systems are necessary on many soils for sustained agricultural production. However, there are several drainage system designs which can be utilized to satisfy agricultural...

Nitrogen Removal in the Overland Flow Process—Design Considerations

Factors Affecting Nitrogen Removal in Water Hyacinth Treatment Systems

Nitrogen Removal in Single-Stage Activated Sludge

Oxidative and Non Oxidative Ammonia Modeling

Active Chlorine Distribution in Secondary Effluents

Nitrogen-Fixing Plants for Coastal Management

Watershed Loading Functions for Nonpoint Sources
A modeling procedure has been developed to estimate nonpoint source pollution from agricultural runoff in large watersheds. The procedure is based on simple equations for runoff and soil...

Rooted Aquatic Plant Effects on Nitrogen Budgets
The nitrogen nutrient budget was determined for river surface water and its relationship to rooted aquatic plants. Rooted aquatic plants were tested using bioassay techniques and standing...

Halogenated Byproduct Formation by ClO2 and Cl2
The formation of halogenated organic byproducts, resulting from treating wastewater effluents with chlorine dioxide and chlorine, was studied in laboratory experiments. Total trihalomethanes...

Concepts in Aquatic Treatment System Design
Aquatic treatment systems can be designed to produce effluents meeting secondary and typical advance treatment effluent requirements on BOD, SS, and nitrogen compounds. In many situations,...

Thiocyanate Bio-oxidation Kinetics
Thiocyanates have been found in most coal conversion and coke plant effluents. Data were developed for the biological degradation rate kinetics of thiocyanate removal, and material balance...

Nitrogen-Cycle Model for Aquatic Systems: Analysis
Formulation and analysis of a nitrogen-cycle model for aquatic systems is described. The transformations of elemental nitrogen from the nutrient species to different phytoplankton and...

The Nitrogen and Phosphorus Budgets of the Bear River and Dingle Marsh and Their Impact on a Large, Oligotrophic Water Storage Reservoir

Effect of Pneumatic Destratification on Dissolved Nitrogen Concentrations in Reservoirs

An Innovative Biological Nutrient Removal System

1981 Clean Air Act Amendments: A Call for Rhyme and Reason
The state of the nation's clean air legislation is reviewed and found lacking common sense; changes to the law are recommended. Significant improvements in air quality for...

 

 

 

 

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