Determining the Economical Optimum Life of Residential Water Meters

When should you replace a water meter? This question has become an evasive one for many Utilities that have to make this decision. On the basis of these meter readings, Utilities assess their water and wastewater customers with the corresponding consumption fees. Therefore, these fees, dictated by the meter's recordings, become the main source of income for the majority of Utilities.

Deck: 

When should you replace a water meter? A methodology for the calculation of this optimum age is presented.

About The Author: 

Dr. Hans D. Allender is president of "The ProducBoxTM Institute," a firm that furnishes training and management consulting services to diverse clients. As a management consultant, Dr. Allender specializes in reengineering, productivity and quality improvements under the TQM umbrella.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10493

Cost-Effective Treatment for High Quality Water Sources: Extreme/High-Rate Serial Filtration

Pilot tests have demonstrated that EHRSF can meet Surface Water Treatment Rule requirements.

Deck: 

Filtration

About The Author: 

Craig M. Thompson was the process design engineer on the pilot testing project for the Humboldt Bay Municipal Water District. Thompson is registered as a Professional Engineer (P.E.) in California and is an Environmental Engineer with Kennedy/Jenks Consultants in San Francisco, California.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10270

Coagulation and Filtration Performance Optimized With Liquid Borne-Particle Counters

No longer are turbidimeters the sole measurement method for water purity levels.

Deck: 

Measurement

About The Author: 

Kent Horrell is an Engineer and Tony Sweazy is an Associate Chemist with Louisville Water, Louisville, Kentucky.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10271

Artificial Recharge Enhances Aquifer Capacity

Aquifer storage and recovery is becoming an important water supply management tool for maintaining or enhancing the water-bearing capacity of an aquifer.

Deck: 

Artificial Recharge Enhances Aquifer Capacity

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10239

City Develops System to Prioritize Its Stormwater Capital Projects

The end result of a prioritization system was a process designed to minimize subjective factors and rely on rational, equitable and consistent methods.The process of inventorying and prioritizing the City of Columbus, Ohio's stormwater capital improvement projects was a comprehensive undertaking. The process was designed in order to minimize subjective factors and to result in a rational, equitable and consistent method for prioritizing these projects.

Deck: 

Stormwater management

About The Author: 

Angela R. Tickle is a project engineer for the City of Columbus, Ohio, Division of Sewerage and Drainage, Stormwater Programs.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10246

Pulsed-Bed Sand Filters Meeting California Requirements

Wastewater is being reclaimed for non-potable uses. The use of this water is alleviating water shormance of the valve.

In addition, buried manually-actuated valves are easier to design and install if the operating valve shaft is horizontal and the gearbox input shaft is oriented toward the ground surface.

One concern with orienting the valve shaft axis horizontally is hydrostatic torque. Hydrostatic torque is a sizable operating torque component on large valves.

Deck: 

Reuse

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10248

Maintenance History of Four Steel Water Tanks

A survey looked the maintenance painting costs for four large-capacity steel water tanksDetermining real maintenance costs associated with protecting large-capacity steel water tanks from corrosion has been a topic of discussion for years among specifiers, manufacturers, contractors and owners of water storage systems.

Deck: 

Water storage

About The Author: 

Walter Neumann Jr. is president of Neumann Company Contractors, Inc., an industrial painting firm based in Romeoville, Illinois. Wade D. Newman is executive director of the Steel Plate Fabricators Association, Des Plaines, Illinois.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10216

Membrane Applications in Water Plants

Faced with upgrading aging facilities, a Florida water utility decided to incorporate reverse osmosis.

Deck: 

System Profile

About The Author: 

Ian Lisk is Editorial Director of Water Engineering & Management and Water & Wastes Digest. Significant input to this article was provided by staff at Metcalf & Eddy's Sunrise, Florida office, and at the City of Plantation, Florida.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10221

Automated High Rate Filters Improve Performance, Reduce Costs

A Philadelphia water company improved the performance of and reduced the operating costs of its filtration system with modernized high-rate gravity filters.

Deck: 

Filtration Systems

About The Author: 

Morrison Coulter is vice president of production for the Philadelphia Suburban Water Company.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10206

Membrane Specialists Gather for International Conference

The latest on membrane technology for water treatment.Membrane system technology has been developed to a point where one or more of its forms can be applied to extract most of the contaminants of concern found in many raw water sources. Recognizing the importance of the latest findings to the drinking water supply community, the International Water Supply Association recently conducted a conference on the subject in Paris, France.

Deck: 

Membrane technology

About The Author: 

Ian Lisk is editorial director of Water Engineering & Management and Water & Wastes Digest.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10210
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