Strategies for Successful Erosion Control Projects
Erosion control projects currently play a large role in rehabilitation of urban watersheds in alpine settings for water quality and…
Evaporative Chilling and Thermal Storage
Evaporative chilling, the use of cooling towers t remove heat from a chilled water system directly, is an energy saving…
California Drought–Are We Ready for the Next One
The winter of 1986-87 provided record low amounts of runoff in many of the watersheds that serve as California’s water…
A Rapid “Purge-and-Transfer” Field Screening Technique for Volatile Organic Compounds in Groundwater
Brown and Caldwell Laboratories has developed a rapid screening technique for Volatile Organic Compounds (VOCs) in groundwater. The technique determines…
New Trickling Filter Applications in the U.S. A
After falling in disfavor in the U.S. in the 1970s, trickling filters are now reappearing in new applications. The Trickling…
Using Operational Solubility Product Constants to Improve Water Softening Calculations
Lime-soda softening is one of the oldest and most important industrial water treatment processes. However, few engineers and chemists can…
Flow-Through Bioassay Testing: Sunnyvale Water Pollution Control Plant
The San Francisco Bay Area is the fourth largest metropolitan region in the United States. Its unique geographical setting and…
Engineering a Pond Closure
The paper describes details on the closure of a 7-acre surface impoundment owned by Pinole Point Properties, a subsidiary of…
Using a Stream’s Full Resources: How to Develop a Flow-Variable Industrial Discharge Permit
When the stream discharge permit for an industrial wastewater is set, the required level of treatment can either be based…
Enhancing Reaction Rates in Nitrifying Trickling Filters Through Biofilm Control
Reaction rates in tertiary nitrifying trickling filters have been significantly increased by the development of the biofilm-controlled nitrifying trickling filter…
The New Regulations–A Challenge for Small Systems
This article illustrates how the 1986 amendments to the Safe Drinking Water Act may affect small water systems by focusing…
State-of-the-Art Denitrification Process Protecting the Florida Environment
Successful design and operation confirms innovative approach! A unique wastewater process for nitrogen removal is operating in Hillsborough County, Florida….