Controlling Nitrification in a Water Distribution System Using Sodium Chlorite

Engineers set out to discover whether the direct addition of sodium chlorite to a water stream might be an effective nitrification control process.

Deck: 

Water Treatment

About The Author: 

Thomas L. O’Connor, BSEE, MBA, is project director, H2O’C Engineering, Columbia, Mo. e-mail: Tom@h2oc.com
 
Bart Murphy, BSCE, is superintendent of Water, Willmar (Minn.) Municipal Utilities.
 
John T. O’Connor, EngD, PE, is principal, H2O’C Engineering, Columbia, Mo. Phone: 877-22-WATER; e-mail: John@h2oc.com.
 

Activation Date: 
September 21, 2001
Legacy
Legacy ID: 
12646

High-tech: Samplers

New Analyzer Offers Continuous Measurement, Dual Stream Sample

About The Author: 

For further information, phone Hach Company at 800-227-4224.

Activation Date: 
September 20, 2001
Legacy
Legacy ID: 
12643

Gas Chlorine Education

The Gas Chlorine Education Committee announced the launch of an industry-wide campaign entitled, "Gas Chlorine: The One and Only Choice for Water Disinfection." The year-long campaign takes aim at unsubstantiated reports questioning the safety of gas chlorination.

Deck: 

Committee launches chlorine safety campaign

Publication Date: 
September 11, 2001
Activation Date: 
September 11, 2001
Files: 
Issue Reference: 
Legacy
Legacy ID: 
12620

Testing Bottled Water

One of the most important (and sometimes the most complex) area of the bottled water business is compliance with federal, state and industry regulations. As the EPA continues to evaluate contaminants in drinking water for regulation under the Safe Drinking Water Act (SDWA), the FDA must review these regulations for their suitability for bottled water.

Deck: 

Continually Evolving Regulations for D/DBPs

About The Author: 

Barbara L. Marteney and Kristin M. Safran of National Testing Laboratories, Ltd. specialize in consulting with bottled water companies regarding testing requirements. They maintain contacts with bottled water regulators, industry associations and the FDA regarding regulatory changes and bottled water issues. They have authored numerous articles and given presentations regarding state, federal and international bottled water regulations.

Marteney and Safran can be reached by phone at 800-458-3330 or 440-449-2525 (Marteney, ext. 217; Safran, ext. 215); food-bev@watercheck.com.

Activation Date: 
September 11, 2001
Issue Reference: 
Legacy
Legacy ID: 
12616

Evaluation of the Use of Crushed Recycled Glass as a Filter Medium: Part 2

Performance studies show that crushed recycled glass can provide capital and annual cost savings over traditional sand filter media.

Deck: 

Filtration

About The Author: 

Richard W. Elliott, P.E., is a civil engineer located in Cazenovia, N.Y.

Activation Date: 
August 22, 2001
Legacy
Legacy ID: 
12546

Upgrading Well Water Disinfection Systems

Disinfection systems treat one city's groundwater supply, allowing the city's aquifers to meet EPA and local water quality regulations.

Deck: 

Hypochlorite Generation

About The Author: 

Randy Walsh is superintendent of plant operations for the Albuquerque Water Utility Division (AWUD), Albuquerque, N.M.

Activation Date: 
August 22, 2001
Legacy
Legacy ID: 
12545

Troubleshooting Ozone Water Treatment Equipment

This article will serve as a troubleshooting principles outline that will quickly and simply guide you through ascertaining, locating and fixing the problem.

Ascertain the Problem

A customer calls with an iron carryover. He is using an ozone system, which includes the ozone unit (ozonator), ozone injection system, off gas/air release tank and filtration.

Deck: 

This article will serve as a troubleshooting principles outline that will quickly and simply guide you through ascertaining, locating and fixing the problem

About The Author: 

Roger Nathanson is president of Ozone Pure Water, Inc., Sarasota, Fla. Ozone Pure Water has been a full service ozone/water treatment supplier since 1980. Nathanson heads the system design, system allocation and R&D departments. His background includes mechanical engineering, plumbing/pipe fitting, swimming pool remodeling/repair, sales and marketing. Nathanson holds a U.S. patent on a proprietary ozone unit/ozone generator design. He can be contacted at 941-923-8528; fax 941-923-8231; e-mail opw01@acun.com.

Publication Date: 
July 30, 2001
Activation Date: 
July 30, 2001
Files: 
Company Reference: 
Issue Reference: 
Legacy
Legacy ID: 
12465

Calcium Hypochlorite

It was more than 90 years ago that Booton, N.J., became the first utility in the nation to use chlorine to purify water. Subsequently the use of chlorinated water became the norm across the country and safe drinking water is something we all take for granted. In that respect, how many people realize how water chlorination affects other aspects of everyday life? To many people, a nice dip in the pool provides recreation and relaxation, and they don’t need to think about the effort that went into the treatment and sanitation that made that pool a safe and clean place for fun. That is left to the professionals and drinking water fundamentals that can be applied to pool water care.

Deck: 

From Drinking Water To Swimming Pools

About The Author: 

Joanne Funyak is the Accu-Tab
marketing manager for PPG Industries, Inc., Pittsburgh. She can be reached at jfunyak@ppg.com.

Activation Date: 
July 30, 2001
Files: 
Issue Reference: 
Legacy
Legacy ID: 
12463

Commercial, Industrial Ultraviolet Systems

In past articles, we discussed the benefits of ultraviolet (UV) disinfection as well as the many available options. In this article, we will focus on the available technologies and provide an overview of how these technologies are being applied in commercial and industrial applications.

For the last 50 years, the majority of UV systems have incorporated what is known as low-pressure standard output lamp technology.

Using this technology, a single 30-inch lamp, which is 40 watts, can provide the average homeowner with a year?s worth of protection for pennies per day.

Deck: 

Available technologies and their use in C&I applications

About The Author: 

Adam Donnellan is vice president of sales for Sunlight Systems. He represents the third generation of his family to be involved with UV water disinfection. He can be reached at adam@sunlightsystems.com.

Publication Date: 
June 11, 2001
Activation Date: 
June 11, 2001
Files: 
Legacy
Legacy ID: 
12395

Using Maintenance Benchmarking Practices to Specify Chlorine Residual Analyzers

We all have been to that meeting where new regulatory standards requiring more stringent guidelines are announced, when it is demanded that the treatment facility be run more efficiently and that it has been decided that automation is inevitable. Of course, there is a limited budget.

We all have been to that meeting where new regulatory standards requiring more stringent guidelines are announced, when it is demanded that the treatment facility be run more efficiently and that it has been decided that automation is inevitable. Of course, there is a limited budget.

Deck: 

Instrumentational evaluation

About The Author: 

Tony Palmer is the executive director for the Instrumentation Testing Association, Henderson, Nev. He can be contacted at 702.568.1445.
Maureen Ross, P.E., is involved with technical programs for the Instrumentation Testing Assn.

Publication Date: 
May 21, 2001
Activation Date: 
May 21, 2001
Legacy
Legacy ID: 
12394
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