Oxygen Production for a Future Lunar Base
This paper discusses various ways for providing oxygen for a lunar base. Currently, there are three methods available which are technologically possible. One of these is the use of chemical...
Water Supply Yields Power
During an overall renovation of the water supply system in Pittsfield, Mass. it was decided to bring water from three of the town's four reservoirs to a single treatment plant...
Rehab Defies Pros, Beats Clock
Fast-tracking an overhaul of its wastewater treatment system let Columbus, Ohio escape federal penalties under the Clean Water Act. Over $200 million was invested to improve the city's...
Rehab for Filtration
Not all water treatment plants currently include filtration, but standards set forth in the Safe Drinking Water Act mandate it for surface-collected potable water. Objective is removal...
New Clarifiers Help Save History
By using clarifiers to upgrade a waste treatment plant, Camp Dresser & McKee were able to utilize the available space so that an historic building existing within the plant could...
Out of the Mainstream
By treating only part of the wastewater stream, a biological/chemical phosphorus removal system also reduces chemical costs and sludge production. The system consists of two 60 ft dia...
Aeration
A Wastewater Treatment Process
This manual summarizes current aeration practices in wastewater treatment, and includes both theoretical and practical guideline for the design and operation of such unit processes. The...
Water-Quality Ponds ? Are They the Answer?
Water-quality 'wet' ponds have been proposed to treat storm water for the removal of phosphorous in streams tributary to Cherry Creek Reservoir, a major recreational...
Multiple Treatment System for Phosphorus Removal
Detention ponds, wetlands, and infiltration basins have each been shown to reduce constituent loads carried by urban stormwater, including phosphorus. Design recommendations are presented...
Swirl Concentrators Revisited. The American Experience and New German Technology
The Swirl Concentrator is a small, compact, 'no moving parts' solids separation device. Its function is to act as as a static combined sewer overflow (CSO) regulation...
Program to Reduce Deicing Chemical Usage
Over the years (since about 1948), the dependency on deicing chemicals has been increased to provide 'bare pavement' for safe and efficient winter transportation....
Long-Term Effects of Urban Stormwater on Wetlands
In 1986 scientists and managers associated with local, state, and federal agencies that have wetland protection and stormwater management responsibilities in the region joined to consider...
Ground Water Recharge and Management Under the Small Reclamation Projects Act
The U.S. Bureau of Reclamation through its Small Reclamation Loan Program is providing needed Federal financial and technical assistance to water users in Southern California to help ease...
Recovery Efficiency From Single-Well Injection/Recovery Tests in a Limestone Aquifer of High Secondary Porosity
An analytical advection-diffusion model was developed to assess the feasibility of injecting and recovering water in a limestone aquifer of high secondary porosity. The model was calibrated...
Aquifer Storage Recovery: A New Water Supply and Ground Water Recharge Alternative
Aquifer Storage Recovery (ASR) involves treated drinking water that is stored underground by injection into a suitable storage zone during those months of the year when available supply...
Tucson Recharge with Existing Potable Water System
In 1987, a study was undertaken to evaluate the potential for using the City of Tucson's existing potable water distribution system and production wells for recharge of treated...
Ground Water Recharge with Sewage Effluent
Recharge systems for soil-aquifer treatment (SAT) of conventionally treated sewage effluent typically remove essentially all suspended solids, biodegradable material (BOD) and microorganisms...
Analysis of Hydraulic Impacts at the Tucson Reclaimed Water Recharge Project
The Tucson Reclaimed Water Recharge site has been implemented with increasingly sophisticated calculation methods as data collection efforts advanced. Initial project scoping utilized...
Reclaimed Water System with Artificial Recharge
Arizona cities must reduce water consumption as a result of the 1980 Arizona Ground Water Management Act. Use of reclaimed water in place of potable water for landscape irrigation and...
Wastewater Recharge: Water Quality and Operations
The Green Valley Wastewater Treatment Facility began operations in its current configuration in 1981. It treats approximately 1 million gallons per day of municipal wastewater, with disposal...
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