Concentrations of Triclosan in the City of Denton Wastewater Treatment Plant, Pecan Creek, and the Influent and Effluent of an Experimental Constructed Wetland

Concentrations of Triclosan in the City of Denton Wastewater Treatment Plant, Pecan Creek, and the Influent and Effluent of an Experimental Constructed Wetland

Date: August 2004
Creator: Waltman, Elise Lyn
Description: The Pecan Creek Waste Reclamation Plant in Denton, Texas, an activated sludge WWTP, was sampled monthly for ten months to determine seasonal and site variation in concentrations of triclosan (5-chloro-2-(2,4-dichlorophenoxy)phenol), an antibacterial additive. SNK separation after the highly significant ANOVA on ranked data were: summer = fall > winter = spring and influent > downstream = effluent = wetland inflow > wetland outflow (a=0.05). After the plant converted to ultraviolet disinfection, measurements were made before and after the UV basin to determine if significant amounts of triclosan were converted to dioxin. Percent loss at each of the treatment steps was determined. Concentrations of triclosan in the downstream site were below the published NOEC for the most sensitive species.
Contributing Partner: UNT Libraries
How Healthy is the Upper Trinity River?: Biological and Water Quality Perspectives

How Healthy is the Upper Trinity River?: Biological and Water Quality Perspectives

Date: 1990
Creator: Jensen, Ric
Description: This conference report contains discussions and papers from a symposium hosted at Texas Christian University, in Fort Worth, Texas, examining the ecological health of the Upper Trinity River, and the impacts of various human activity, such as agriculture, urbanization, and waste management. The papers cover the effect of water quality on urban rivers, long-term water quality trends in the Trinity River, solutions that may improve water quality in the river, as well as biological, agricultural and waste-water issues.
Contributing Partner: UNT Libraries
The State of the Hudson 2009

The State of the Hudson 2009

Date: 2009
Creator: New York (State). Hudson River Estuary Program.
Description: This report describes the environmental quality of the Hudson River and its watershed, including issues such as pollution, population growth, and biodiversity. The report also describes the habitats of estuaries, watersheds, and rivers in general.
Contributing Partner: UNT Libraries
Federal Water Pollution Control Act

Federal Water Pollution Control Act

Date: November 27, 2002
Creator: United States. Congress. House
Description: The Clean Water Act (CWA) establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters. The basis of the CWA was enacted in 1948 and was called the Federal Water Pollution Control Act, but the Act was significantly reorganized and expanded in 1972. "Clean Water Act" became the Act's common name with amendments in 1977. Under the CWA, EPA has implemented pollution control programs such as setting wastewater standards for industry. We have also set water quality standards for all contaminants in surface waters. The CWA made it unlawful to discharge any pollutant from a point source into navigable waters, unless a permit was obtained. EPA's National Pollutant Discharge Elimination System (NPDES) permit program controls discharges. Point sources are discrete conveyances such as pipes or man-made ditches. Individual homes that are connected to a municipal system, use a septic system, or do not have a surface discharge do not need an NPDES permit; however, industrial, municipal, and other facilities must obtain permits if their discharges go directly to surface waters.
Contributing Partner: UNT Libraries
Experiment Station Work, [Volume] 4

Experiment Station Work, [Volume] 4

Date: 1898
Creator: United States. Office of Experiment Stations.
Description: Bulletin issued by the U. S. Department of Agriculture compiling selected articles from the Agricultural Experiment Stations. This bulletin contains articles on: Pure Water, Loss of Soil Fertility, Availability of Fertilizers, Seed Selection, Jerusalem Artichokes, Kafir Corn, Thinning Fruit, Use of Low-Grade Apples, Cooking Vegetables, Condimental Feeding Stuffs, Steer and Heifer Beef, Swells in Canned Vegetables.
Contributing Partner: UNT Libraries Government Documents Department
Clearing the Waters: A focus on water quality solutions

Clearing the Waters: A focus on water quality solutions

Date: March 2010
Creator: Palanaippan, Meena
Description: This report discusses global water issues and offers a variety of proposals for countering the degradation of freshwater ecosystems for the benefit of public health and the environment.
Contributing Partner: UNT Libraries
Law of the People's Republic of China on Prevention and Control of Water Pollution

Law of the People's Republic of China on Prevention and Control of Water Pollution

Date: May 11, 1984
Creator: Standing Committee of the National People's Congress, P.R. China
Description: This Law is formulated for the purpose of preventing and controlling water pollution, protecting and improving the environment, safeguarding human health, ensuring the effective use of water resources and facilitating the development of socialist modernization.
Contributing Partner: UNT Libraries
Regulations Governing Water Pollution Control Measure Plans and Permit Application Review

Regulations Governing Water Pollution Control Measure Plans and Permit Application Review

Date: October 16, 2006
Creator: China (Republic : 1949- ). Huan jing bao hu shu
Description: This law was passed by the government of the Republic of China (Taiwan) to protect human health and the environment by controlling water pollution.
Contributing Partner: UNT Libraries
Quantitative Analysis of Water and Biological Samples for Determination of Haleogenated Organics in the Upper Trinity River, Texas : Final Technical Report

Quantitative Analysis of Water and Biological Samples for Determination of Haleogenated Organics in the Upper Trinity River, Texas : Final Technical Report

Date: [1976]
Creator: Johnson, David E.
Description: This study had three objectives: 1) to develop a method for the quantitative determination of total organic bound chlorine in water and biological samples using Source-Excited X-Ray Fluorescence, 2) to provide training in the use of analytical techniques for students from different disciplines, and 3) to use an interdisciplinary approach involving students of biology, chemistry, and physics to investigate a complex environmental problem. Only the first objective is treated in detail in this volume.
Contributing Partner: UNT Institute of Applied Sciences
The Effects of Water Pollution Control Laws on Industrial Plant Location

The Effects of Water Pollution Control Laws on Industrial Plant Location

Date: May 1969
Creator: Montgomery, Austin Homer, 1928-
Description: The objective of this research is to determine the degree to which the recent antipollution laws will affect the location of industrial plants.
Contributing Partner: UNT Libraries
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