Relating Water Treatment Problems to O & M Factors
The author discusses the operations and maintenance factors that must be considered in dealing with water treatment problems....
Environmental Infrastructure: Does Civil Engineering Education Meet the Challenge?
The author explores some avenues for re-direction of the civil engineering education process to become more responsive to the needs of infrastructure re-development in the areas of water...
Operations, Maintenance & Cost Comparisons of Three Dewatering Devices
The Metropolitan Waste Control Commission's Wastewater Treatment Plant in Minneapolis/St. Paul has demonstrated that two new innovative sludge dewatering pocesses, namely,...
Belt Filter Operation and Maintenance Survey (ASCE-WPMC Subcommittee Report)
This report summarizes the results of a national survey of municipal wastewater plant belt press installations conducted by an ASCE Task Committee in 1984. Data from 106 installations...
Optimization of Variable Volume Diaphragm Filter Presses
The St. Paul, MN, Metropolitan Waste Control Commission Wastewater Treatment Plant has installed and operated eight variable volume diaphragm filter presses for four years. During this...
Controlling Factors in Vacuum Filter Performance
Changes in the processes at Milwaukee's Jones Island sewage treatment facilities required testing of the filterability of various mixtures of sludges. The main purpose of...
Evaluation of Point-of-Use Treatment Devices
The contamination of drinking water is a matter of concern to many communities and people. Small community water systems and individual residences supplied by private wells face severe...
Design and Construction of TCE/PCE Removal Facilities
This paper presents a review of the design and construction of a facility in Arcadia, California, to remove trichloroethylene (TCE) and tetrachlorethylene (PCE) from ground water. (Edited...
Predicting Carbon Adsorption of Organics from Humid Air
Increased levels of humidity resulted in reduced adsorption capacity for trichloroethylene (TCE) at low influent concentrations on a microporous activated carbon. Water vapor also reduced...
Estimating Wastewater Capacity of a Cedar Swamp
The response of water table to rainfall provided the basis for estimating the wastewater capacity of a northern Michigan cedar swamp which had been used for disposal of 30 million gallons...
Preliminary Evaluation of Submerged Aquatic Macrophytes in a Pilot-Scale Aquatic Treatment System
A study was done to determine which species of submerged aquatic macrophytes (Elodea nuttallii, Myriophyllum heterophyllum, Ceratophyllum demersum) were suitable candidates for use in...
A Bench-Scale Study of Wastewater Aquaculture Using the Duckweed
A continuous flow bench scale reactor was used to evaluate nutrient removal and growth characteristics of the duckweed, Lemna minor. Such a system can further an understanding of the treatment...
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...
An Innovative Wastewater Management Program
An innovative wastewater management program is described which has been implemented in Orange County, Florida. The wastewater treatment facility utilizes the Bardenpho advanced biological...
Theoretical and Experimental Evaluation of Single-Activated Sludge
The objective of this paper is to discuss the results of operating a laboratory bench scale compartmentalized activated sludge unit operated at a hydraulic detention time ( theta ) of...
Risks from Metals Emitted by Sludge Incinerators
The types of incinerators most commonly used in the United States are the multiple hearth and fluidized bed designs. Airborne contaminants from either method of sludge incineration may...
Metal Contamination of Sludge by Water Supply Systems
The authors present a cursory review of the source of metals in sewage sludge and an analysis of limited sludge metal data and drinking water data that supports the hypothesis that a water...
Denver's Dual Utilization Sludge Management Plan
The Metropolitan Denver Sewage Disposal District No. 1 (District) has adopted a Dual Utilization approach to sludge management. This technique uses composting during periods of inclement...
Health Effects Evaluation?Ocean Disposal of Sludge
Court rulings have recently allowed the ocean disposal of municipal wastewater sludge in certain cases. This paper describes a methodology which was developed to determine acceptable loadings...
Sludge Treatment Design Lands Innovative Funding
The design of sludge treatment facilities for the 10 mgd Ithaca, New York, wastewater treatment plant incorporates both proven technology in the form of gravity thickening and anaerobic...
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