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Rational Design and Operation of Packed Bed Adsorption Reactors
Design of packed bed adsorption reactors is based presently upon the parameter empty bed contact time (EBCT), a fallacious concept. The column wave front behavior, instead, should be the...

Comparative Simulation of Oil Weathering
Oil spills in the aquatic environment, an unfortunately more and more common occurrence, cause contamination effects which negatively impact water quality, health of ecosystems and water...

Comparison of Methods for Sizing Secondary Treatment Filters for Wastewater
The trickling filter process in which a bacterial biomass is allowed to grow attached to a filter medium of rock or plastic is effectively used for removal of organic materials in domestic...

Value Engineering Changes to the Eastside Pipeline
Value Engineering is a process of applying analytic, creative and evaluative techniques to a project in order to make recommendations that will, when implemented, maximize value and quality...

Rehabilitating Arctic Tundra in Alaska
During the past 25 years, there has been significant progress in tundra rehabilitation. Initially, agronomic practices requiring large quantities of grass seed and fertilizer were believed...

Oil Spills: Prevention, Prediction, and Preparation
This paper summarizes some of the state and federal rules, assessment techniques, and response procedures being used by marine terminals along coastal California to prevent, predict, and...

Grade Control Structures for Pipeline Crossings in the Arid Southwest
Pipeline crossings at streams, rivers, and washes are at risk due to bed and bank erosion in the river environment. Buried pipelines may be exposed in the channel bottom by scour of bed...

Chandler Canal Fish Screen Facilities
Diversions from rivers must be protected from negative effects on migratory and non-migratory fish species. Diversions to canals often have to be screened to prevent removal and loss of...

Application of the Newton Method in Valve Discharge Coefficient Relationships
This paper presents a methodology that utilizes the Newton Method to compute the dimensionless valve discharge coefficient Cd from a manufacturers valve discharge coefficient Cv. The implicit...

Estimation of Bed Material Transport Capacity
A procedure is presented which combines several computational components for the estimation of bed material transport capacity in alluvial channels. Bed load transport is estimated through...

Experimental Uncertainty and Measurement Errors in Hydraulic Engineering
The Task Committee on Experimental Uncertainty and Measurement Errors was formed to provide information and guidance on current practices used for describing and quantifying measurement...

Coastal Engineering Laboratory and Field Measurements: Some Uncertainties in Measurement
In this paper two examples of uncertainties which can occur in field measurements and measurements in coastal engineering models are examined. These examples are chosen to demonstrate...

Vapor Phase Biofiltration for Removal of VOCs
The selection of an appropriate packing material for the biofiltration process is an important factor in the removal of contaminants from vapor phase. This study evaluates two different...

Aquifer Transmissivity Computations Based on Data from Pump-and-Treat Facilities
Contamination from petroleum hydrocarbons spilled from USTs is a concern in urban areas that depend on shallow unconfined aquifers for their water supply. Studies on the transmissivity...

Recover Inorganic Solids from Obsolete Propellants
A feasible process was developed to recover inorganic solids (energetics and metallic fuel) from obsolete polyurethane-based propellants in order to solve their associated long-term disposal...

Design of Riparian Habitat Replacement in Active Floodplains
Conventional flood control engineering techniques and approaches that have been traditionally been applied are now challenged by the public and no longer readily available as floodplain...

The Balanced Indigenous Population (BIP) and Statistical Process Control (SPC) in Marine Pollution Ecology
This account discusses the regulatory requirement of maintaining a Balanced Indigenous Population (BIP) as it relates to an ocean outfall. A brief history of the development of the BIP...

Overview of the US Army Corps of Engineers Flood Control Channels Research Program
The objective of the Flood Control Channels Research Program, currently being conducted at the US Army Engineer Waterways Experiment Station, is to develop design guidance and systematic...

Bridge Hydraulic and Scour Analysis Using FESWMS-2DH
Stream crossings are usually designed to satisfy all engineering and enviromnental constraints at the lowest possible cost. As a result, roadway approach embankments leading to bridge...

Whither Nuclear Waste Disposal?A 50th Anniversary View
The world recently observed the 50th anniversary of the first use of the atomic bomb. Thus major sources of nuclear wastes, from defense and power generation, have been around for slightly...

 

 

 

 

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