East River Modeling of Water Quality for Multiple-Project Assessments
The East River Model (ERM), which employs the RMA-2V hydrodynamic and RMA-4 water quality modeling code, was used by Lawler, Matusky & Skelly Engineers to assess water quality...

Developing an Ecosystem Approach for Restoration of the Bay of Quinte
Author describes the ecosystem approach that has been utilized for the restoration of the Bay of Quinte. Brief description of the study area is presented. Various problems such as bacterial...

Short-Term Effects of the Banjul Sewerage and Drainage Project on Faecal Coliform Counts
Assessment of the short-term effects of the Banjul sewerage and drainage project on faecal coliforms (indicator organisms for contamination of pathogens) in the coastal areas. The project...

In Situ Bioremediation Via Horizontal Wells
The U.S. Department of Energy, Office of Technology Development, has been sponsoring full-scale environmental restoration technology demonstrations for the past 3 years. The Savannah River...

Caustic Spray for Sewer Crown Corrosion Control
A novel method to control sewer crown corrosion which involves spray application of a caustic solution to the sewer crown is described. Corrosion control using this concept is based on...

In-Situ Bioremediation Using a Recirculation Well
An existing model (Semprini and McCarty, 1991; 1992) of in-situ bioremediation using methanotrophic bacteria for degradation of volatile organic compounds was modified to simulate use...

Evaluation and Rehabilitation of Relief Wells
The U.S. Army Engineer District, Vicksburg has developed an expedient method of rehabilitating arrays of large numbers of gravity flowing relief wells located along the toe of dams using...

Biochemical Control of Sulfide Production in Wastewater Collection Systems

Effluent Nitrite Accumulation in the Heterotrophic Denitrification of High-Strength Industrial Wastewaters

Characterization of a Heavy Metal Contaminated Site

Improved Performance of Activated Sludge with Addition of Inorganic Solids

Classification Based on Coliform Counts of Coastal Waters in Metropolitan Rio de Janeiro, Brazil
Rio de Janeiro is a municipality with approximately 8.7 million inhabitants that produce about 470 tons of sewage per day, of which only 64 receive treatment or are released through a...

Microbial Quality of the Mussel Perna perna (Linne, 1758) Extracted from Guanabara Bay, Rio de Janeiro, Brazil
Guanabara bay is an estuarine complex in the state of Rio de Janeiro with 12 cities including Rio de Janeiro and Niteroi on its shores. It has a hidrographic basin of 4000 Km2...

Toxicity Bioassay Using Nitrifying Bacteria
Monitoring water quality by the use of toxicity bioassay was studied with respect to the interrelationship between nitrifying activities, ammonium and inorganic compounds. Differential...

Substrate Effects on Methanotrophic Trichloroethylene Degradation
Formate up to 1g/L had no significant enhancing effect on the degradation of trichloroethylene (TCE) by three mixed enrichments of methane-oxidizing bacteria. Methanol did not enhance...

The Potential Use of Genetically Engineered Microorganisms in the Remediation of Environmental Pollution
Naturally occurring microorganisms express a broad range of metabolic activities which are being successfully applied to the field of bioremediation. Genetic engineering will enhance such...

Study of Direct Potable Reuse of Reclaimed Wastewater: Preliminary Results of a Five Year Study
The City of San Diego, California has received Clean Water Grant funding to build and operate a 0.5 million gallon per day facility to demonstrate a wastewater treatment system, utilizing...

2,4-Dinitrophenol Degradation and Sludge Floc Size

Hydrogen Peroxide as a Source of Oxidant Capacity for the Biotransformation of Benzene, Toluene, and Xylene in Biofilms

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

 

 

 

 

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