Characterization of Biofilm Interactions with Toxic Trace Metals: Consequences for Metal Removal and the Biophase

Simple Tests to Assess Water Quality in Indonesia

Biotransformations Under Denitrifying Conditions

Research Needs Concerning Biological Agents in the Marine Environment

Control of Nocardia in a Municipal Activated Sludge Facility
The paper reports on a study to determine the cause(s) of the biological imbalance and identify corrective measures. Project activities included: isolation and identification of filamentous...

Optimizing the Activated Sludge Process by Encouraging Futile Cycling
A study was conducted to demonstrate that cell yield in activated sludge processes can be decreased without increasing oxygen consumption by applying operating conditions that encourage...

Fate and Effect of Carbon Tetrochloride and O-Xylene on Anaerobic Systems with Sulfate Reducing Bacteria
The fate and effects of o-xylene and carbon tetrachloride on methanogens and sulfate reducing bacteria were investigated using serum bottles. Up to 750 mg/1 of o-xylene did not cause any...

Bacterial Fingerprinting to Trace Source of Coliform Bacteria During Artificial Recharge
This report describes the use of a bacterial 'fingerprint' technique to determine if treated effluent from infiltration beds was the source of coliform bacteria...

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...

Synthetic Organic Contaminants and Pesticides in Groundwater
For decades, the groundwater of Suffolk County, New York, has been bacteriologically and chemically of superior quality despite the high iron and manganese occasionally encountered in...

Biological Treatment of Trichloroethylene
Trichloroethylene and related compounds such as cis- and trans-1,2-dichloroethylene and vinyl chloride are common contaminants of ground water in industrial areas. In oxygenated ground...

Is It Safe to Eat the Seafood?
The issue of bacterial, viral and chemical contamination of Puget Sound seafood and its consequent impact on human health has been of concern for some time. This paper discusses potential...

Nitrification in a Salt Wedge Estuary
Autotrophic nitrifying bacterial activity and numbers were measured in a salt wedge estuary receiving ammonium-rich effluent from a municipal secondary wastewater treatment facility. Instream...

Inactivation of Total Coliform Bacteria Associated with Particles by Ozonation

Seasonal Effects on Total Bacterial Removals in a Rapid Sand Filtration Plant

Strategy to Improve Drinking Water Quality in Small Water Systems in Puerto Rico

Monitoring for Indicator Bacteria in Small Water Systems

Field Study of Specialized Bacteria for Nitrification
A full scale field study using specialized bacteria was conducted to determine its effectiveness in achieving nitrification while quantifying dosage rates. A side-by-side comparison of...

Low Head Filtration Removal Efficiencies of Giardia Cysts, Coliform Bacteria, and Turbidity From Low Turbidity Water
The removal of Giardia cysts from low turbidity waters is of great concern in many areas of the United States. A pilot program was undertaken to determine if an established low head filtration...

A GIS to Predict Non-Point Source Pollution Potential
The non-point pollution potential of agricultural lands was analyzed using a geographic, computer based system. Bacterial pollution received special emphasis. The system accepts digitally...

 

 

 

 

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