The Place of Land Treatment of Wastewater in Today's Society
Land treatment of sewage can be a viable alternative to secondary and/or tertiary in-plant treatment. Depending on local conditions, overland-flow, low-rate, or high-rate systems, or a...
County Engineer Throws the Book Away in Intersection Design and Lowers Cost 20%
Article describes the innovative design of a highway intersection that was reconstructed to relieve traffic congestion. The nearest drainage outlet was 2800-ft away and was inadequate,...
TVA Cuts Deep Slot in Dam, Ends Cracking Problem
In 1972, cracking in the concrete dam at TVA's Fontana project embarked TVA on a four-year program of investigation, analysis and repair. Thermal expansion in the downstream...
European Water Treatment Practices�� Their Experience with Ozone
Today, more than 1100 water treatment plants worldwide use ozone for some purpose. In Europe, it is always regarded as a water-treatment technique and seldom simply as a disinfectant....
European Water Treatment Practices�� The Promise of Biological Activated Carbon
Bacterial growths occur in all granulated activated carbon columns. In fact, it is difficult to prevent such growths. The Germans now deliberately foster aerobic bacterial growth by providing...
Field Control Replaces Design Conservation At World's Largest Underground Powerhouse
The excavation of 16,000,000 yd� of rock at LG-2, part of the La Grande hydropower project in Canada, has been completed. The world's largest underground powerhouse, with...
The Coastal Zone: Battleground and Classroom
The coastal zone of the nation is becoming the battleground for opposing energy and environmental interests. The Coastal Zone Management Law of 1972 asked that each state prepare a coastal...
Bypassing Sand at Coastal Inlets
To reduce dredging requirements and to provide calm navigation channels, the U.S. Corps of Engineers often constructs jetties and breakwaters. These structures block sand drifting along...
Foundation Soil Preload Saves $164,000
Soils in the lower Mississippi valley are highly compressible and present a challenge to structural foundation designers. Rather than support power plant structures on piles, one design...
EPA Proposes Far-Reaching Regulations for Reducing Synthetic Organics in Drinking Water
In late January, 1978, EPA proposed far-reaching regulations for reducing synthetic organic chemicals in drinking water, bringing about the most sweeping changes in the water-treatment...
What's New in Concrete and Concrete Floors�
What's new in concrete and concrete floors? Dig into that subject and you find that among the most interesting and important recent developments are (1)Post-tensioned flat...
Mammoth Construction Jobs: How to Speed Them, Cut Costs�
Not a few massive construction projects in such fields as mass transit, water resources, and power plants are suffering greatly from inflated costs and long delays. Among reasons are the...
West Coast Consulting Firm Gets Large Minicomputer to Keep Pace with Growth
This article tells the story of computer use in a medium-sized consulting engineering firm in the water resources field, Boyle Engineering Co., of Newport Beach, Calif. In the mid 1960's,...
The Story Behind the New Clean Water Act of 1977
The Clean Water Act of 1977 keeps intact the basic principles of the strong Water Pollution Control Act (PL 92-500) of 1972. Because of the shear magnitude of upgrading the nation's...
Underground Hot Water Storage Could Cut National Fuel Needs 10%
The possible conservation of waste heat by using it to heat water and then, subsequently, injecting the heated water into wells screened in aquifers containing saline water is described....
U.K. Tunnelling Costs Halved by Use of Unbolted Concrete Lining Segments
Britain now has more than 25 years experience in the development of precast tunnel linings, for tunnels in clay. These linings are expanded directly against the ground. Under suitable...
Rouen, France Water Treatment Plant Using Biological Activated Carbon
The la Chapelle drinking water treatment plant in Rouen, France was designed specifically to incorporate biological activated carbon (BAC). With many U.S. cities faced with the prospect...
Sludge Pyrolysis: How Big a Future�
Pyrolysis is the destructive distillation of combustible elements by heat in the total absence of oxygen. Partial pyrolysis or starved air combustion is the gasification of a material...
Coastal Controversies Abound at Record-Breaking Conclave
Coastal Zone '78 was the largest specialty conference ever held by the ASCE, drawing over 1,000 participants from a wide spectrum of professions that are involved in coastal...
Trans Alaska Pipeline
This is one of the most extraordinary projects contending for the OCEA awards. Examples: the 360 mile haul road built in one summer; the 29 construction camps, self-contained cities to...
Return to search