Model to Design Diffused Aeration System for BNR
Estimating VOC Emission Rates in Aeration Systems
Multi-Stage Diffused Bubble Aeration System for the Removal of Volatile Organics and Radon, a Case History
Chlorination/Dechlorination and Post Aeration Key Operating Parameters
Waterfall Aeration Works
When they sought an alternative for instream aeration in Chicago's Calumet Waterway System, engineers at the Metropolitan Water Reclamation District of Greater Chicago (MWRDGC)...
Numerical Prediction of Aeration in Hydroturbine Draft Tubes
Aeration Using the Howell-Bunger Valve
Numerical Modeling of Air Bubble Transport in Spillway Flow Downstream from Aerator
A simple numerical model for simulation of air bubble transport in the flow downstream from an aerator is constructed and compared with laboratory experiments. The model consists of two...
Combined Nitrogen and Phosphorus Removal in a Cyclic Activated Sludge System Without Anoxic Mixing Sequences
A simplified methodology for combined phosphorus and nitrogen removal through reactor configuration, cyclic sequencing and the control of aeration intensity in variable volume activated...
Microbiological Stabilization Through Aerobic Digestion and Storage
A study was conducted to evaluate the pathogen indicator bacterial reductions in the sludges of six wastewater treatment plants. These plants were extended aeration and oxidation ditch...
Degradation of Ortochlorophenol in Aerobic and Anoxic-Aerobic Processes
Removal of OCP in sequencing batch reactors was shown to be independent of the presence or lack of co-substrate and independent of SRT for fully aerated reactors. The reactors with an...
Deflector Plate Turbine Aeration?Case Studies
Water quality requirements have become a focal point in recent re-licensing of hydroelectric projects. The Federal Energy Regulatory Commission has significantly increased the relevance...
Innovative Reregulation Weirs for Dam Releases
Two different reregulation weir designs for dam release improvement are discussed. A porous timber crib is favored for applications where increased minimum flow is needed, and a labyrinth...
Tailwater Concerns and the History of Turbine Aeration
All new proposals for hydropower development and many of the almost 300 hydroelectric projects which will be relicensed before 2000 will have to address the issue of minimum dissolved...
Numerical Modeling of Air/Water Mixtures for Internal Flows
The Tennessee Valley Authority (TVA) currently is working with several organizations to develop design tools for the aerating hydroturbine. Part of this effort includes the investigation...
Efficiency and Cavitation Effects of Hydroturbine Venting
Volkart and Bohac et al. have summarized much of the past work on aeration of hydroturbine releases to improve downstream water quality. Conventional alternatives for increasing dissolved...
Introduction to Air-Water Mass Transfer
Background is presented to assist individuals in comprehending the terminology, in understanding the need to know the rate of air-water mass transfer, and the historical theories of air-water...
Turbulent Water Aeration: Analytical Approach and Experimental Data
Analytical studies based on the statistical theory of turbulence were carried out in order to identify some relevant parameters which may be associated with the reaeration rate coefficient...
Measurement of Reaeration Coefficient with the Soluble Solids Probe
The results of analytical and experimental studies are presented, showing that the proposed method for indirect determination of gas transfer coefficients at gas-liquid interfaces, based...
A Gas Chromatographic Protocol for the Measurement of Krypton Gas in Water
This paper presents the results of a study to investigate the feasibility of using a gas chromatographic (GC) technique for the measurement of non-radioactive krypton gas concentrations...
Return to search