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Electro-Osmotic Removal of Nitrates from Soils
Nitrate migration to ground and surface waters is a serious U.S. contamination threat. Electro-osmosis may be a more effective means for soil reclamation than leaching or chemical treatment....

Nitrogen Leaching from Young Florida Citrus
Sixteen buried drainage lysimeters were constructed from 2300 L polyethylene containment basins for the study. The lysimeters were 2.1 m in diameter by 0.8 m deep and were filled with...

Soil Treatment of Food Processing Wastewater
Wastewater from food processing contains a large oxygen demand. Most food processing wastewater requires primary treatment to remove some solids and secondary treatment to oxidize oxygen...

Subterranean Disposal of Irrigation Drainage Waters in Western San Joaquin Valley
Subsurface drainage waters in the western San Joaquin Valley of California are laden with selenium and other toxic elements and above-ground disposal creates a hazard problem (Letey et...

Planning for Remediation of Irrigation-Induced Water Quality Problems in the Middle Green River Basin, Utah
Reconnaissance investigations and detailed studies between 1986-1990 under the National Irrigation Water Quality Program of the Department of the Interior identified and quantified elevated...

Standards for Automated Agricultural Weather Stations
A progress report is presented on American Society of Agricultural Engineers (ASAE) Standards Project X505: Measurement and Reporting Standards for Automated Agricultural Weather Stations....

Evapotranspiration of Dry Beans with Drip Irrigation
Information about the effect of irrigation on dry bean production in the Southwestern Colorado is very limited. The primary objective of this study is to establish a crop water use (ET)...

Lead is a Four-Letter Word
New regulations and strict enforcement make it difficult and expensive to remove lead-laden coatings from steel structures. Lead-based primers and paints are not considered hazardous as...

Is There a Future for Desalting in Meeting California's Water Needs?
This paper addresses the potential role of desalting reclaimed, brackish, and sea waters for use in meeting California's water needs. Brief descriptions of sources and costs are included....

Designing Self-Cleaning Wet Wells for Wastewater Pumping
Guidelines for the design of self-cleaning wet wells for variable speed pumps are given. The progress of research on the design of wet wells for constant speed pumps, including submersible...

Orange County Florida Landfill Dilute Leachate Wetland Treatment and Restoration System
The Orange County Landfill began operation in 1971 as an EPA demonstration project for the purpose of defining landfill operations in high groundwater table areas. To prevent groundwater...

Variability of Hydraulic Response of Constructed Wetlands
Dye tracer studies using Rhodamine WT have been performed on two field scale subsurface flow wetland units for further improvement of secondary treated municipal effluent at Byron Bay...

Simulating THM Precursors Transport with DWRDSM
A study was conducted by the California Department of Water Resources (DWR) to demonstrate the ability of its Delta Simulation Model (DWRDSM) to simulate fate and movement of inorganic...

Operational and Structural Optimisation of Hydraulic Structures for Light Liquid Removal
The removal efficiency of light liquid separation schemes is determined by the hydraulic inflow conditions, the inflow fluid properties and the separator hydraulics. The relating set of...

Protected Streamflow and Water Uses
The development of protected-streamflow standards is essential for the most desirable and equitable use of stream waters for aquatic habitats, municipal and industrial water supply, and...

Two Options for Disposal of Desalination Reject Water
A major problem associated with the use of desalination plants for the production of fresh water is the disposal of the reject water. This water is typically double the salinity of the...

Ballast Water Treatment Effluent Dispersion Studies
Treated tanker ballast water is discharged form Alyeska Pipeline Service Company's ballast water treatment facility through a multiport diffuser into Port Valdez, Alaska. The discharge...

Selective Withdrawal for Reducing Turbid Water in a Reservoir
This paper deals with improvemental operations of the selective withdrawal facilities as one of the comprehensive technics for shortening the turbid water stay after floods flown into...

A New In-Stream Aerator
Experiments on microporous, polymeric, hollow fiber membranes are being conducted for application to in-stream aeration. The hollow fibers are scaled on one end and connected to an oxygen...

Field Examination of a Distribution System Water Quality Model
In the aftermath of the Safe Drinking Water Act (SDWA) of 1974, numerous models have been established to assess the quality of water and simulate its deterioration in distribution systems....

 

 

 

 

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