Air Blown Optical Filter Network Delivers 'Future Proof' Supervisory Control System

During an upgrade of the primary treatment plant, the Metropolitan King County West Point Plant used a new approach to its optical fiber network.Planning and building optical fiber local area networks (LANs) capable of accommodating unknown future capacity and routing requirements have long vexed information systems and information technology managers. The primary cause of this vexation is the high labor cost to construct or modify conventional systems.

Deck: 

Network upgrade

About The Author: 

Philip M. Daniels is the Supervising Engineer for the Water Pollution Control Division of Department of Natural Resources, Metropolitan King County, Seattle, Wash.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10551

Distinguishing Between Certified & Non-Certified Water Filters

In the past year, manufacturers have begun advising consumers that the replacement elements they produce fit other manufacturers housings or pitchers and infer that the hybrid system will perform as well as the original system. This, in NSF's opinion, is not truthful information to the consumer.One of the main purposes of the NSF International Drinking Water Treatment Unit Certification Program is to assure that a drinking water treatment system performs in the marketplace as tested and certified by NSF.

Deck: 

The NSF Certification claims for a water filtration system are null and void when a component is placed in another housing

About The Author: 

Nancy Culotta is general manager of the Drinking Water Treatment Unit Certification Program at NSF International, Ann Arbor, Michigan.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10569

Media-Bed Filtration: Painstaking Analysis of Situation Leads to a Long-Term Solution

Many filtration products are available. Asking the correct questions is important in obtaining an optimum product for the desired application.

Deck: 

Filtration

About The Author: 

E. Marvin Greenstein has a BS in chemical engineering, and a distinguished career in filtration system design and application. He founded LEEM Filtration Products, Inc., Ramsey, NJ, in 1977 and serves as president

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10516

Self-Cleaning POE System Solves Frequent Filter Clogging Problems

A new self-cleaning system avoids the premature clogging problems associated with conventional carbon filtration systems, while at the same time providing one micron or submicron filtration.As more Americans are aware of the health risks associated with contaminated water supplies, many citizens are turning to filtered water. One couple, Gerry and Candy Rossettie, who bought a 40-year old, 6,000 sq ft home in Sands Point, New York, wanted to be certain they were getting safe water.

About The Author: 

Gary Baxter is the general manager of The Pure Water Source Corp. (800.697.8739), a San Francisco, California, company specializing in the design and manufacture of new technologies for the water treatment industry.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10469

Microfiltration: How Does it Compare?

Increased focus on technologies that meet tighter regulatory requirements and increased public pressure has motivated municipalities to take a serious look at microfiltration (MF) membranes as a viable treatment option. This article is intended to familiarize you with the basics of microfiltration and discuss how it compares to conventional alternatives.

About The Author: 

Thomas Muilenberg is an applications engineer specializing in the area of membrane systems with General Filter Company, a manufacturer of water and wastewater process equipment for municipal and industrial applications.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10467

Activated Carbon Basics

Activated carbon is like a radio: everyone knows it works, but few people know exactly how. This article is a brief summary of the sources of carbons, the activation process, the principle of adsorption, and the range of current applications.

Deck: 

A brief summary of the sources of carbons, the activation process, the principle of adsorption, and the range of current applications

About The Author: 

Elwood V. Rinehart is Product Manager for Potable/Process Water Treatment Carbons for Barnebey & Sutcliffe Corporation, Columbus, Ohio. Woody has been in the water treatment industry for more than 35 years, with over 12 years of specific experience with both gas and liquid adsorption applications for activated carbon.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10409

Ultrafiltration Basics

Municipal and industrial sectors are looking to new and innovative technologies to meet the demands of modern day consumers' requirements. One such technology is ultrafiltration.

Deck: 

The application of membrane technology

About The Author: 

Lynn Cotterill graduated from Liverpool J.M. University with a BSc Honors degree in chemistry. She recently moved to the U.S. and works for NWW Acumem Inc., Carlsbad, California.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
10354

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

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