Dilution Analysis for Undirectional Diffusers
The paper discusses the mixing mechanics of submerged, multi-port diffusers used to discharge heated water from steam-electric power plants into shallow receiving waters. An analysis for...

Role of Surface Active Media in Anaerobic Filters
Equal-sized activated carbon and anthracite coal were compared when used as packing media in completely mixed anaerobic filters. Synthetic glucose and phenol bearing solutions and a diluted...

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...

Thermal Plume Area Calculation
A simple formula for the surface area of a thermal plume is proposed, appropriate for application to a depth-limited surface discharge. The formula is based upon thermodynamic and kinematic...

Compression Effects in Batch Settling Tests
The effect of compression resistance on terminal settling velocity results obtained from batch tests has been studied by means of dimensional and numerical analyses, and comparison with...

Shore Line Effects on Mixing of a Tee Diffuser
Submerged multi-port diffusers are often used to discharge waste heat resulting from once-through cooling at coastal power plants. For shallow receiving waters characterized by weak ambient...

Emulsions Containing a Third Solid Internal Phase
Zero shear-rate rheological properties are calculated for dilute emulsions composed of Newtonian droplets dispersed in a continuous immiscible Newtonian phase and containing a rigid concentric...

Multiport Diffuser Mixing Tones
Mixing zones downstream from multiport diffusers discharging hot water in rivers are considered. The area enclosed in the isotherm defining the boundary of a single-port mixing zone is...

Nearfield Performance of River Diffusers
The flowfield induced by a submerged multiport diffuser discharging across part of the width of a river is considered. A mathematical model is formulated for the flow in the nearfield...

Buoyant Surface Jets
A combination of dimensional analysis, simple physical reasoning and data inspection is used to define distinct geometrical properties and mixing characteristics within the near field...

Staged Multiport Diffusers
A staged multiport diffuser is schematized as an equivalent line source of momentum, neglecting the effects of effluent volume and buoyancy fluxes. Center-line effluent concentrations...

Ocean Outfall Dilution: Effects of Currents
Analyses of data for the City of San Francisco, Calif., obtained from continuously recording current meters showed the most energetic current component, the first principal component,...

Flow of Dilute Polymers Through Porous Media
The flow of dilute polymer solutions through porous media is investigated experimentally. Large increases in flow resistance are noted, considerably higher than would be expected from...

Advanced Waste Treatment Investments
This paper analyzes waste discharges for low flow design situations. The focus of the analysis is a national concern: How much investment in advanced waste treatment should be made to...

Near Field Mixing of Staged Diffuser
A two-dimensional theory that models a staged diffuser as a continuous line source of mass, heat, and momentum has been formulated and solved. The model assumes the major dilution mechanism...

Evaluating Odor Reduction Technologies: Model
An atmospheric dispersion model was developed that calculated odor concentrations for a ground level surface given a variety of inputs that represented the meteorological conditions and...

Line Plume and Ocean Outfall Dispersion
The three-dimensional flowfield created by a line plume of finite length in a steady unstratified current was investigated experimentally and theoretically. The results are applicable...

Optimal Design of High Rate Sedimentation Devices
This paper considers the problem of placing a rectangular array of sedimentation plates in a circular or rectangular tank. Because of the fixed area of the tank, an optimal relationship...

Wastewater Disposal from Two-Dimensional Diffuser
The purpose of this note is to present an explicit equation that gives the center line dilution in a line vertical buoyant jet for any initial Froude number....

Dilution in a Vertical Round Buoyant Jet
A round, vertical, turbulent buoyant jet is defined here as a source of fluxes per unit mass of mass μo, momentum mo,...

 

 

 

 

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