From Wastewater to Drinking Water
The city of Denver, Colorado will experience a population increase of an estimated half million people within the next 20 years. To satisfy the anticipated demand for water in this semi-arid...
Analyzing Infrastructure Condition�A Practical Approach
New York City and Philadelphia are using a new method of analyzing existing data to develop sensible, economical water main replacement programs. By analyzing readily available data on...
The Third Wave in Water Quality Management
In the 1970's there was great pressure to clean up water-polluting discharges no matter what the cost. Now in the tight-budget 1980s, there is a vigorous search for more cost-effective...
New Wastewater Process Cuts Plant Costs 60%
By combining the aerator and the clarifier into one basin, this new wastewater treatment process can slash capital costs up to 60% and operating and maintenance costs up to 45%. Raw sewage...
Boston Tunes Up Water System
In 1977, Boston's water supply system had so many leaks and so many unmetered or undermetered customers that only about half the water entering the system was accounted for....
Activated Sludge
A Comparison of Oxygen and Air Systems
The use of pure oxygen in biological wastewater treatment is the only major advance which has occurred in the area of activated sludge treatment since the early 1960's. Furthermore,...
Progress Since 1979 in Canada
The report that follows describes the Canadian progress in urban hydrology research and in applications of research findings during the period from 1979 to 1983. The main topics include...
Progress in Urban Hydrology in the Federal Republic of Germany since 1979
The importance of urban water problems have been increasingly realized in the 70's also in the Federal Republic of Germany (FRG). State authorities, communities, universities,...
Progress Since 1979 in Sweden
During the past 20 years hard effort has been devoted to the protection of rivers and lakes from pollution. This effort has mainly been focused on the obvious sources of pollution i. e....
Progress Since 1979 in Norway
Following the completion of the major research program 'Purification of Wastewater' in 1978, the organized research activities in urban hydrology almost came...
Progress Since 1979 in the Netherlands
Since the last progress-report still more emphasis has been laid on quality aspects of surface waters. Municipalities as well as Provinces and the national government are responsible for...
Urban Runoff Research in Poland - Progress Since 1979
Research concerning urban hydrology in the scope necessary for drainage and urban runoff is financed in Poland within the framework of the Government Research Program Development and utilization...
Prgoress Since 1979 in India
Since India is a developing nation urban flood control benefits which are 'negative goods' have a low priority. Recently there is an increased awareness in India...
State of Art in Urban Hydrology in Switzerland
The research in urban hydrology in Switzerland does not result from a national organized and planned will, to solve hydrological problems (quantity and quality) due to urbanization. In...
Progress on IHP Project A.2.9.
The initial work of Unesco in the area of urban hydrology was done by the Subgroup on the Effects of Urbanization on the Hydrological Environment during the International Hydrologic Decade...
Pipelines in Adverse Environments II
State of the art and future trends in pipeline design, construction and maintenance are reviewed. Specific areas addressed include adverse terrain conditions, river crossings-particularly...
Journal of Environmental Engineering
The Journal of Environmental Engineering presents broad interdisciplinary information on the practice and status of research in environmental engineering science, systems engineering, and sanitation. Papers...
Urban Water Conservation
Increasing Efficiency-in-Use Residential Water Demand
Water supply and wastewater flow problems have resulted in an increasing concern with urban water demand. This report is an assessment of various water conservation measures aimed at reducing...
Microcomputer Water Quality Simulation Model
Water quality models are widely used in the analysis of natural water systems to evaluate the impacts of wastewater handling alternatives and changes in land use. Linear, steady-state,...
Natural Treatment Systems in Wastewater Treatment and Sludge Management
Criteria defining performance of natural wastewater treatment and sludge management systems are presented. Objectives of natural treatment systems are to help treat municipal wastewater...
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