Hypolimnion Oxygenation Studies in Clark Hill Lake
Discharges from stratified hydroelectric generating impoundments are frequently drawn from the hypolimnin due to the low elevatin of the penstocks. The hypolimnion contains the colder...

DO Model for Discharges from Deep Impoundments
A simple model is presented for the annual dissolved oxygen (DO) cycle of releases from the hypolimnion of deep impoundments. The model includes mathematical formulations and rate constants...

Calorific Value of Wastewater Plant Sludges
Calorific values of wastewater plant sludges are best determined using an oxygen bomb calorimeter, an apparatus which is not readily available in many plants. Using a variety of sludges...

Anerobic Treatment in Novel Contact Digester
Laboratory studies are presented on a combined jet gas mixed and sludge blanket anaerobic contact digester with continuous sludge recycle. Raw piggery waste substrate is used as feed with...

Wastewater Treatment for Cold Regions
The objectives of wastewater treatment in cold regions have been dictated by guidelines and regulations established for other regions. The impact of this occurrence has been extremely...

Design Approach to Dual-Power Aerated Lagoons
Completely- and partially-suspended lagoon cells are defined and their use in dual-power level, multicellular systems is discussed. A procedure is presented for the design of such systems...

Water Pollution Control Plant Upgraded to Meet EPA Regs
An Outstanding Civil Engineering Achievement Award Nominee, Philadelphia's Southwest Water Pollution Control Plant, has a $300 million addition which nearly doubled plant...

Modeling and Interpreting Oxygen Transfer Data
Recommendations for modeling, parameter estimation, and experimental design in unsteady state clean water aeration tests are presented. The basic model for both surface and subsurface...

Rx—Treated Lumber & Metal + Corrosion Ailments
The use of metal elements in contact with fire-treated lumber requires special precautions. It is a problem that has not received much attention in the literature directed to the design...

Decomposition of Solid Waste in Test Lysimeters
Eight test lysimeters containing 100-200 tons of refuse each were monitored for seven years for leachate and runoff rates, leachate and gas composition, refuse temperature, and surface...

Uncertainty Analysis of Dissolved Oxygen Model
First-order uncertainty analysis was applied to 258 stream segments to determine the relative contributions to scatter, or uncertainty, in dissolved oxygen predictions by each of the parameters...

BOD Limit in Synfuel Plants' Cooling Tower Makeup

A Basis for Aeration Design

The Fate of Trace Organic Priority Pollutants in Activated Sludge Systems

Probabilistic Based Discharge Standards

Oxygen Transfer Parameter Estimation
Estimating the oxygen transfer rate of an aeration system is one of the more important functions of a process design engineer. Underestimating the oxygen transfer rate of a proposed aeration...

Refuse-to-Energy Wastewater Treatment
Wastewater treatment technologies are evaluated for their potential utilization at waste-as-fuel (WAF) and refuse-derived-fuel (RDF) facilities to treat waterborne pollutants. The principal...

Temperature Effects on Biostabilization of Leachate
Lysimeter generated leachate of 19,000 mg/L COD was applied to aerobic, dual-stage, fill-and-draw reactors. The primary reactors received organic loadings of 0.96 kg COD/m³⋅day, 2.14 kg...

Unsteady Water Quality Model for River Network
A complex river network system consisting of branches and loops is sometimes complicated by downstream effects from tides, lakes, and other factors. The management of water quality in...

Mathematical Modeling of Impoundment Water Quality

 

 

 

 

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