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Review Paper: Evaluation Of Techniques For Algae Removal From Wastewater Stabilization Ponds, E. Joe Middlebrooks, Donald B. Porcella, Robert A. Gearheart, Gary R. Marshall, James H. Reynolds, William J. Grenney

Reports

Introduction: Approximately 90 percent of the wastewater lagoons in the United States are located in small communities of 5,000 people or less. These communities, many with an average daily wastewater flow of only 175,000 - 200,000 gallons, do not have the resources to keep man at the lagoon sites throughout the day (38). A high degree of technical knowhow is usually lacking in these communities. Often only periodic inspection or maintenance is carried out by the general municipal work force. Therefore, the development of a relatively inexpensive method that does not require sophisticated and constant operation or extensive maintenance is …

Planning For Water Quality In The Virgin River System In The State Of Utah, Utah Water Research Laboratory

Reports

No abstract provided.

Planning For Water Quality In The Bear River System In The State Of Utah, Utah Water Research Laboratory

Reports

No abstract provided.

Planning For Water Quality In The Sevier River System In The State Of Utah

Reports

No abstract provided.

Intermittent Sand Filtration To Upgrade Existing Wastewater Treatment Facilities, Gary R. Marshall, E. Joe Middlebrooks

Reports

No abstract provided.

Waste Load Allocation For The Bear River Basin As Of October, 1973

Reports

No abstract provided.

Waste Load Allocation For The Virgin River Basin As Of October, 1973

Reports

No abstract provided.

Slope Stability Of Overburden Spoil Dumps From Surface Phosphate Mines In Southeastern Idaho, Roland W. Jeppson, Robert W. Hill, C. Earl Israelsen

Reports

No abstract provided.

Steady Flow Analysis Of Pipe Networks: An Instructional Manual, Roland W. Jeppson

Reports

No abstract provided.

Simulation Of Steady And Unsteady Flows In Channels And Rivers, Roland W. Jeppson

Reports

The unsteady, one-dimensional Saint-Venant equations are solved by an implicit finite difference scheme to handle general channel and river flows. The initial conditions for the unsteady flow are provided by solving the steady varied flow equation for the specified boundary conditions. The solution for the unsteady flow allows any of eight separate boundary conditions to be specified which are composed of combinations of specifying the depth or discharge as functions of time at either the upstream of downstream ends, with the stage-discharge relation or constant depth and flow rate specified at the other end. Typical solutions showing the spatial and …

A Study Of The Effectiveness Of Water Resources Planning Groups A Final Report, Daniel H. Hoggan, Jim Mulder, Sarah Jane Taylor, Dennis E. Oaks, Brent Somers, Raymond L. Richardson

Reports

Information and recommendations were developed pertaining to the organization of regional and river basin water planning studies, useful to river basin commissions and others responsible for such studies. The approach that was used included four basic components: (1) conceptualization of a planning model, based on an analysis of planning theory and organizational literature, (2) analysis and review of historical trends in water resources planned, (3) examination and comparative evaluation of 15 river basin planning studies, and (4) case studies of two planning efforts selected from the 15 examined in order to perform a more detailed analysis and to gain information …

Component Description Of Sediment-Water Microcosms, James Hill Iv

Reports

The development and application of complementary variables (potential and flux) for modeling environmental systems are illustrated for the hydraulic and dissolved oxygen subsystems of laboratory microcosms. These sediment-water, semi-continuous flow microcosms were used to determine nutrient interchange and mercury interactions under lighted (aerobic) and dark (anaerobic) conditions. The approach of using complementary variables to describe such systems forces a more complete conceptual understanding of the system and better attention to those parameters (many of which are unknown) requiring measurement. Complementary variables are incorporated into basic linear component equations which describe basic processes of energy transfer and transformation. The components are …

Precipitation Augmentation Potential By Cloud Seeding In The State Of Utah, Geoffrey E. Hill

Reports

No abstract provided.

Upgrading Wastewater Stabilization Ponds To Meet New Discharge Standards, Donna H. Falkdenborg, Ronald F. Lewis, Donald J. Ehreth

Reports

No abstract provided.

Evaluating Water Reuse Alternatives In Water Resources Planning, A. Bruce Bishop, William J. Grenney, Rengasan Narayanan, Stanley L. Klemetson

Reports

Water reuse is a recognized option for augmenting water supplies to provide for expanded water needs. A methodology is developed for examining optimal strategies for water reuse within the context of the total water resources system, including both the provision of water supplies for various uses and management of wastewaters. A model of the water resources system is formulated as a “transportation “ or “transshipment” problem in linear programming depicting the possible sources of supply, including effluent sources available for reuse, which can be used to satisfy the requirements of various water users. The optimizing objective in the model is …

Modeling The Total Hydrologic-Sociologic Flow System Of Urban Areas - Phase Ii, Wade H. Andrews, J. Paul Riley, George B. Shih, Malcolm B. Masteller

Reports

Introduction and Overview: This is an interim report on Phase II of the three phase study. The objectives covered in this phase were: 1. To gather social and hydrologic data needed to calibrate and test the model. 2. The expand the physical model to include the rural part of the watersheds. 3. To test and improve techniques of the logical linking of the hydrologic and sociologic systems. 4. To begin adapting the model to the computer. During the second phase for the hydrologic component of the model major emphasis was placed on the expansion of the hydrologic area and the …

Effect Of Temperature On Algal Removal By Alum Coagulation, Muhammad Anis H. Al-Layla, E. Joe Middlebrooks, Donald B. Porcella

Reports

Questions about the effect of temperature on algal cell coagulation and the relationships between algae removal and temperature, alum dosage, paddle speed, flocculation time, and settling time are answered. The investigations consisted of two series of tests: Studies on algae cultured under laboratory control, and algae in wastewater stabilization ponds. The jar-test technique was used for the coagulation of algal suspensions by alum. Coagulation of algae is caused mainly by the insoluble flocs of aluminum hydroxide. Other aluminum species also have coagulative properties but are far less effective. The destabilization of algal colloids results from enmeshment within the hydroxide precipitates, …

The Gulf-Atlantic Waterway: Instrument To Increase Profit Margins In The Jacksonville Area, Jacksonville Area Chamber Of Commerce Research Department, Jay A. Smith

Waterways and wildlife

The purpose of this report is to reassess the economic value that the Gulf-Atlantic Waterway will have on Duval county. This will show the direct relationship on the Port and the indirect benefits to other segments in our economy. This is needed for three reasons: 1. The last economic study was completed by the Corps of Engineers with the assistance of Arthur D. Little, Inc., a national consulting firm, in 1962. So, it has been almost twelve years since an economic report has been started from scratch. 2. The economic reports in the past have been mainly concerned with cost/benefit, …

Water Resources News, Volume 6, No. 1, January 1974

Water Current Newsletter

From the Desk of the Director
1974 Summer Institute
Water Resources Seminar Series
Energy Conference Proceedings Available
Feedlots Pollute Western Water
Geothermal Energy Dangerous
Water Funds on Ice
Insurance Sales Up But Not Final
REAP Funds May Freeze
River Moratorium Continued
Do-It-Yourself Dam Plan Approved
Environment and Energy Headed in Same Direction
Pavement with Ready-Made Holes
Research Review: Biophysical Control of Water Loss

Component Group Report

Journal of the Minnesota Academy of Science

No abstract provided.

Fugitive Particulate From Highway Construction, Kennard F. Kosky

Retrospective Theses and Dissertations

National ambient air quality standards for particulate matter have been promulgated since April, 1971. While effects of stationary sources on these standards have been examined, little research has been accomplished on the effects of fugitive particulate. This thesis examines the environmental impact of a fugitive dust source, Highway Construction. Using the High-Volume reference method for particulate sampling, the effect of Highway construction was determined. An analysis of concentrations, distance influences, meteorological influences, particle sizes and construction influences is presented. The data obtained from this study indicates the major influence of concentrations is a function of distance and sampling height. Particle …

Electromagnetic Fields In Water Treatment, Robert H. Fagan

Retrospective Theses and Dissertations

Properties and characteristics of colloidal systems are reviewed with a discussion of colloid systems to be found in natural and wastewaters. Current electric and magnetic field theory are reviewed and summarized to provide practical application of the theory to engineering problems in the environmental field. Literature of colloidal reactions to electrical and magnetic fields is discussed and reviewed to ascertain areas of potential application of electric and magnetic phenomena to natural and wastewater treatment systems having objectionable colloid suspensions. It is concluded that application of electrical fields (electrophoresis) does not currently hold much promise for practical applications in water treatment …

Toward The Future Forest: Applying Physiology And Genetics To The Domestication Of Trees, J.H Rediske, F. Thomas Ledig, Peter S. Carlson, Thomas B. Rice, Richard P. Pharis

Yale School of the Environment Bulletin Series

No abstract provided.

Occupational Choice And Employment Stability Among Forest Workers, Philip L. Cottel

Yale School of the Environment Bulletin Series

No abstract provided.

Osha's Impact On Industry, Paul Christ Noller

Retrospective Theses and Dissertations

On December 29, 1970, the President signed into law the Williams-Steiger Occupational Safety and Health Act (OSHA) of 1970, which became effective April 28, 1971. The purpose of this act is to assure safe and healthful working conditions for the nation's wage earners. The law provides that each employer has the basic duty to furnish his employees a place of employment which is safe from recognized hazards that cause death or serious physical harm. The implementation of the OSHA Act has been the most extensive intervention into the day-to-day operation of American Industry in history. Originally, employers expressed doubt that …

The Place Of Lucerne In Western Australian Agriculture, N J. Halse, C. M. Francis

Journal of the Department of Agriculture, Western Australia, Series 4

Lucerne, the world's most important fodder legume, has never won largescale acceptance in West Australian farming, largely because of our success with productive subterranean clover pastures. But recent disease problems on sub. clover stands have led to greater interest in alternative species, especially lucerne, for higher rainfall areas.

This article summarises our knowledge of lucerne establishment and management in W.A. and reviews current research aimed at achieving better results from lucerne.

Evaluation And Impact Of Planning And Development Under The Washington State Shoreline Management Act, Donald S. Skone

All Master's Theses

The Shoreline Management Act of 1971, ballot proposition 43B, was approved by the voters of the State of Washington on November 7, 1972. The Act is designed to prevent uncoordinated and piecemeal development of the shorelines in Washington State. This study focuses on the impact of the Shoreline Management Act on development of the shorelines. Emphasis is placed on the non-development nature and intent of the Act. Included is a sample study of implementation of the Act under the Guidelines.

Evaluative Study Of A Proposed Municipal Pyrolysis Installation, Leon Breckenridge

All Master's Theses

This paper discusses an alternative to sanitary landfills as a method of disposing of municipal solid waste. The alternative means is a pyrolysis-gasification process for the disposal of solid wastes and the production of energy in the form of a gas of relatively low energy content.

Characteristics of typical municipal solid wastes are discussed. A discussion of the pyrolysis process is included along with other pertinent technical information. A method for utilization of the energy produced from pyrolysis is presented.

Land Systems Of The Brockman River Catchments, S. Porritt

Natural resources published reports

The survey was conducted to gain basic information about the agricultural land use of the Brockman River Catchment. The University of Western Australia Faculty of Agriculture was interested in the area as a compact, agriculturally diverse area close to Perth which was, therefore, suitable for filed studies. The Department of Agriculture, Moora Office was interested in this study as a framework within which to improve its extension services in the area.

Both parties cooperated in investigations of the area by providing data and equipment. Field work was carried out in summer 1973-74 and data compiled by an agricultural science student …

Medio Ambiente 1974, Aldemaro Romero Jr.

Publications and Research

No abstract provided.