Full-Scale Evaluation of Filter Influent Chlorination and Ozonation
Ozone and chlorine applied ahead of pressure filters are compared to determine the effect of the chemical addition on the pressure differential across the filter bed. The study was significant...

Role of State Department in Environmental Issues
The Department of State plays a key role in resolving international environmental issues. This paper describes how the Department is organized to deal with environmental concerns, discusses...

The Ozone Defense
Ozone is a molecule containing three oxygen atoms. When bubbled through drinking water, the third atom in ozone is attracted away by other molecules, a process called oxidation. This process...

Are the Soil Depositions in Mexico City Unique?
The answer clearly is: YES| However, the amplification and soil-structure interaction effects observed in Mexico City are important considerations - even if they may not be so severe -in...

Inactivation of Total Coliform Bacteria Associated with Particles by Ozonation

Ozone Auto Cleaning On-Line Water Quality Monitoring System

Ozoning the Aqueduct
Only the second of its kind in the United States, the Los Angeles Aqueduct Filtration Plant is using ozone to treat drinking water. The water comes from the Sierra Nevadas via the 300...

Earthquake Risks to Utah Water and Gas Systems
Designed to guide local earthquake hazard reduction programs, this study estimates direct aggregate earthquake damage to Davis and Salt Lake County utilities. For making these loss estimates,...

Evaluation of Chlorine Dioxide and Ozone Preoxidation on Conventional Treatment and Direct Filtration
The renewed interest in the use of chlorine dioxide and ozone as preoxidants has focused mainly on their effectiveness on color and THM precursor removal and as disinfectants. This paper...

A Study of Ozone-Induced Coagulation

Oxyphotolytic Destruction of Trihalomethane in Water

Ozone and Weather Patterns in Japan and the U.S.
Air pollution and meteorological data were collected in April-June, 1979 for 49 consecutive days in the Tsukuba area about 60 km northeast of Tokyo. Hourly O3,...

Operation and Maintenance Evaluation of Ozone and Ultraviolet Disinfection

Kinetics of Enteroviral Inactivation by Ozone
An analysis of enteroviral inactivation by ozone was performed using kinetic expressions developed from mass balance information obtained from a continuous flow reactor. The rate of viral...

Effects of Ozonation on Chemical Characteristics of Sludges

Physical-Chemical Mechanisms of Aqueous Ozonation

Ozone Precursor Transport - The Lawrence, KS Situation

1981 Clean Air Act Amendments: A Call for Rhyme and Reason
The state of the nation's clean air legislation is reviewed and found lacking common sense; changes to the law are recommended. Significant improvements in air quality for...

Ozone Inactivation of Floc Associated Viruses and Bacteria
It has been shown that some viruses and bacteria in their natural environment may exist embedded or adsorbed within various solid materials. These viruses may exhibit a totally different...

Occurence of Organic Compounds and Removal by AWT Processes

 

 

 

 

Return to search