Water Supply System Rehabilitation
This report was prepared to assist practicing engineers meet the challenge of rehabilitating old drinking water systems, many of which have been in existence for over 100 years and are...
Bright Lights Over China
The financing for Guangdong province's newest 700 mw coal fired electric power station came from a syndicate of 46 banks from 11 countries. The steel for the turbine generators...
Going Sewerless
An in-building wastewater recycling system is an option where lack of sewers, limits on water supply, and special concerns about water quality are obstacles. The system was incorporated...
Digestor Do-Over
Digesters at 6 Orange County (Calif.) wastewater treatment plants needed drastic odor control rehabilitation. Repairs included epoxy patching to cracked domes, installation of a geomembrane...
Pipe-lining a Pipeline
This core prestressed concrete cylinder pipe is now lining the inside of a major water supply tunnel in Alaska. Occasionally found in rock tunnels, or buried pipelines, large diameter,...
Another Geotech Import: Deep Soil Mixing
A technique called deep soil mixing (DSM), imported from Japan, has been used to stabilize an existing dam foundation. When the Bureau of Reclamation discovered that Jackson Lake Dam had...
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...
Calaveras Pipeline Hydroelectric Project
The Calaveras Public Utility District (San Andreas, California) has a pipeline connecting its water treatment plant to the San Andreas Reservoir. By reducing the flow rate in the system...
First Impulse Turbine in the U.S. Mining Industry
The United States Bureau of Mines has funded a research project to investigate the improvements made in the operation of mine refrigeration systems when a thermal energy recovery system...
Hydropower on a Wastewater Plant Outfall: Point Loma Hydro Project
The plant is on a bluff 90 feet above the Pacific Ocean where the primary treated effluent is discharged through a 2-mile-long (3. 2 kilometer) outfall pipeline. The head was previously...
Special Pile Foundations for a Coastal Permafrost Site
The design of the plant's foundations had to address several challenging geotechnical conditions. These included (1) 'warm' (close to 32 degree F)...
Anchorage Taps Eklutna Lake for New Water Supply
The 170 million Eklutna Water Project will furnish water to Anchorage, Alaska by the summer of 1988. The project consists of an 8,500-foot long diversion tunnel, 6 miles of 54 to 60-inch...
An Overview of Cold Region Considerations for the Design of the Eklutna Water Project
The paper presents a brief overview of cold regions considerations that were considered during the design of the various elements of the Eklutna Water Project in Anchorage, Alaska. The...
Water Treatment Facility Design for a Glacial Lake
The Municipality of Anchorage, Alaska has undertaken a major water supply project, the Eklutna Water Project, to satisfy the growing water demands of Anchorage. The source of raw water,...
Performance Study of the Lagoon at Inuvik, N.W.T.
Since 1957, Inuvik's sewage has been discharged into a lagoon situated northwest of the townsite. In 1982 the lagoon was upgraded to a two-stage system. Two primary cells...
Evaluation of Sewage Treatment Requirements in Cold Regions: Case Study?City of Whitehorse
This paper describes a method available for evaluating sewage treatment requirements in cold regions. The City of Whitehorse wastewater management situation has been used as an example...
Wastewater Plant Cold Weather Operational Problems
A questionnaire survey was conducted at biological wastewater treatment facilities in northern New England. Problems associated with various unit processes, due to cold weather operations,...
Developing a Community Water System for Shishmaref, Alaska
This paper discusses a unique water supply system for the City of Shishmaref, a moderately sized Alaska Native community on Sarichef Island in the Chukchi Sea. A three million gallon reservoir...
Effluent Dispersion Measurements Under Sea Ice
Field measurements of the dispersion of effluent from the Seawater Treatment Plant (STP) at Prudhoe Bay, Alaska, were made during April 1985. The primary objective was to determine whether...
Waterfront Stabilization Project, Kaktovik, Alaska
This paper discusses an innovative 384-foot treated-timber cribwall design utilized to control rapidly accelerating thermal erosion and establish a roadway along the bluff on the Beaufort...
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