Tampa's Hookers Point AWT Plant Working Well
The Tampa, Florida advanced wastewater treatment plant is designed to remove a high degree of BOD suspended solids, nitrogen and phosphorous. Presently, the state has exempted the plant...

Grid on Elastic Foundation with Rotational Restraints
Mathematical models of aquatic systems frequently represent phytoplankton growth dynamics in nutrient limited environments by saturation or Michaelis-Mention type kinetics. When nitrogen...

Saturation Kinetics for Preferential Nitrogen Uptake
Mathematical models of aquatic systems frequently represent phytoplankton growth dynamics in nutrient limited environments by saturation or Michaelis-Menton type kinetics. When nitrogen...

Dynamic Nutrient Cycle for Waste Stabilization Ponds
Stabilization ponds provide a simple, economic, and effective method of waste treatment. There is a critical need for a reliable, predictive method for the design and analysis of stabilization...

Pollutant Concentrations from Homogenous Land Uses
A stormwater-runoff sampling program was developed for a 208 areawide water-quality study in northeastern Illinois. Analysis of the data collected with automatic sampling equipment from...

Sediment Oxygen Demand and Nutrient Release
Benthic oxygen demand rates in rivers ranged from 0.10 gm/m to 5.30 gm/sq m/day and were found to increase linearly with dissolved oxygen concentrations in the water overlying the sediment...

Ground-Water Quality at Rapid Infiltration Site
The ground water quality beneath a 30-yr old rapid infiltration was studied over a 12-month period. The system receives primary effluent and treats it to a very high quality through the...

Index To Evaluate Lake Restoration
A lake evaluation index (LEI) is proposed to express the overall quality of lake water based on a mathematical combination of the commonly measured limnological variables total phosphorus...

A Streamlined Approach to Biological Nitrogen Removal

Nitrogen Yields and Land Use in Southern Streams

Effluent Irrigation of Coastal Bermuda Grass
Secondary effluent from the city of Tallahassee, Fla. was applied to coastal bermuda grass on lakeland fine sand. Effluent was applied through sprinklers at rates of 50 mm/week, 100 mm/week,...

Effluent Irrigation at Different Frequencies
The summer crops sorghum x sudangrass,Sorghum vulgare Pers. x Sorghum sudanese Stapf., corn silage, and corn grain, Zea...

Modeling Nitrogen, Oxygen, Chattahoochee River, Ga.
A steady-state nitrogen, carbonaceous biochemical oxygen demand (CBOD), and dissolved oxygen (DO) model of a 67-mile (108-km) reach of the Chattahoochee River, near Atlanta, Ga., was calibrated...

Removal of Soluble Secondary-Effluent Organics
Data are presented on the removal of soluble organic nitrogen (SON) and soluble chemical oxygen demand (SCOD) by chemical coagulation, activated-carbon adsorption, ion exchange, lime precipitation,...

Kalman Filter Modeling of the Speed River Quality
The extended Kalman filter is applied to the results of two sampling surveys conducted on the Speed River, Ontario. Magnitudes of carbonaceous and nitrogenous BOD components for these...

Mathematical Modeling of Dissolved Oxygen in Mixed Estuaries
One of the basic difficulties in modelling DO in a given estuary is the uncertainities involved in the BOD and reaeration rates. The oxidation of both carbonaceous and nitrogenous substances...

Largest Rotating Biological Contactor Plant Also First to Remove Nitrogen
Orlando, Florida is now constructing a new advanced waste treatment plant that removes both nitrogen and phosphorus to a high level. The plant is notable because it is the largest rotating...

Ground-Water Contamination by Fertilizer Nitrogen
Nitrogen percolation beneath the crop root zone was significantly reduced by careful irrigation management using the USDA irrigation scheduling program. Deep percolation losses were measured...

Fate of Nutrients During Aerobic Digestion
Laboratory scale aerobic digestion experiments were performed and nutrient balances were maintained in order to evaluate nutrient transformations during digestion of waste activated sludge....

Kinetics of Bacterial Deactivation with Chlorine
A power function relating coliform bacteria deactivation to the product of the chlorine contact time, t, and the initial chlorine residual concentration, R, is applied to disinfection...

 

 

 

 

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