A New Approach to Activated Sludge Plant Design
Activated sludge plants are designed on the basis of stationary tests at laboratory scale for constant organic loads and constant input flows. From these tests the kinetic parameters are...
Land Treatment of API Separator Sludge
An extensive research project was undertaken to establish design and operational guidelines for treatment of oily sludge using land treatment systems. Forty-five test plots were established...
Impact of Dynamic Loading on Bio-Phosphorus Removal
The ability of bench-scale activated sludge biological phosphorus removal systems to produce effluents with consistently low phosphorus concentrations was influenced by influent TOC/COD...
Carcinogen Risk Assessment
The various approaches to assessing carcinogen risk are described and evaluated....
Structural Safety Studies
Structural engineers are most concerned with the safety aspect of structures. The primary objective of structural engineers is to produce structures which are satisfactory in meeting certain...
Drilled Piers and Caissons II
Drilled piers or caissons, also called drilled shafts or bored piles, have long been a very cost effective foundation solution for many soil profile and load situations. A distinct advantage...
Institutional Incentives and Disincentives for Water Recycling and Reuse in the United States
A complex set of legislative/regulatory, technological, water conservation, and economic factors operate to affect the degree of industrial wastewater reuse/recycle in the United States....
Texas Hiplex?A Summary
Beginning in 1974, a new, concerted effort was undertaken by the Federal government, in cooperation with various High Plains states - including Texas - and local entities, to gain a better...
Annual and Seasonal Variations of Phosphorus Loads in the Okanagan River
Results of monitoring of phosphorus loads in the Okanagan River channel linking Okanagan, Skaha and Osoyoos Lakes are described. The southern Okanagan basin is the area where major changes...
Economics of Ditch Maintenance in Northwestern Ohio
A history of drainage and settlement in the Black Swamp of Northwestern Ohio is presented. The Ohio Ditch Law and county ditch maintenance program is explained. An economic comparison...
Yield-ET Functions in Irrigation Systems Design
A linear-programming (LP) framework and associated computer routines were developed to evaluate economics of deficit irrigation in system design and to optimize the sizing and operation...
Agricultural Nonpoint Source Control Program for Lake Erie
Congress mandated (PL 92-500, Sec. 108d and 108e) that the U. S. Army Corps of Engineers design and develop a program for the rehabilitation and environmental repair of Lake Erie. The...
Nantucket's Endangered Maritime Heaths
Heaths, though common in northern Europe, are of disjunct distribution and limited development on the east coast of North America. In contrast, Nantucket Island, Massachusetts supports...
Endangered Wildlife of the Coastal Zone of Bangladesh
The present work based on the observation of several years since, 1968. Study was done along the coastal zone of Bangladesh. Random exploitation, destruction of habitat, illegal hunting,...
Special Management Area Planning in Mississippi's Coastal Zone: The Port Bienville Experience
In Mississippi, the key state agency charged with the responsibility for coastal wetland protection is the Bureau of Marine Resources, a sub-division of the Department of Wildlife Conservation....
A Carrying Capacity Study of Hatteras Island
This article summarizes a study done of Hatteras Island, North Carolina, a largely undeveloped and natural barrier island. 'Carrying capacity' means the ability...
The Statistics of Storm-Induced Sediment Resuspension
The passage of a storm increases the wind stress applied to the sea surface. This surface stress is partially dissipated as it is transmitted through the water column. Some fraction of...
An Endangered Species' Impact on Port Development
The presence of an endangered species within a port complex presents numerous, often conflicting, management challenges - protection of an endangered species while accommodating economic...
The Review of the Comprehensive Survey of the Coastal Zone of China
The purpose of the survey is to provide basic data for coastal zone development of China. The scope of survey is a long narrow belt area alongshore. The contents of the survey include...
Staggered Truss Adapted to High Rise
The 34-floor Nashville Convention Center Hotel required a structural system that would overcome the tendency to vibrate in the wind. The solution was a modified staggered frame truss,...
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