Filter Housing Design Fits Height, Seismic Stress Needs

Occasionally, height is an issue in a filtration system's housing design. A few years ago, Eden Equipment Company of Huntington Beach, Calif., was approached by a client with just this issue. Due to the client's specific requirements for their system, Eden's original ideas and drawings for this horizontal vessel needed to be redesigned. In addition to the height restrictions on their system, they also needed a design that could withstand a Seismic Zone 4 earthquake.

About The Author: 

For further information, phone Eden Equipment Company at 714-842-8181.

Activation Date: 
November 12, 2002
Legacy
Legacy ID: 
13426

Arsenic in Drinking Water - Part 4

Editor’s Note: Part 1 of this series provided a timeline for the development of a drinking water standard for arsenic. It also summarized the political and public reactions to the U.S. EPA decision to delay and withdraw the arsenic rule.

Part 2 dealt with human exposure and advances in knowledge concerning human health effects of exposure to arsenic.

Part 3 summarized early data on the occurrence of arsenic in U.S. waters.

Deck: 

Arsenic Removal Methods

About The Author: 

John T. O’Connor, EngD, P.E., is CEO of H2O’C
Engineering, Columbia, Mo. Phone 877-22-WATER; e-mail: john@h2oc.com.

Activation Date: 
June 5, 2002
Legacy
Legacy ID: 
13138

Packaged Treatment Plant Treats Tough Water Supplies Consistently, Economically

Since the 1960s, municipalities and industries have used packaged water treatment plants to successfully and economically treat small water supplies. These packaged plants have offered a smaller footprint, lower capital cost and easy operation.

About The Author: 

Darin St. Germain is a product manager at USFilter and is a registered professional engineer in the state of Iowa. Prior to USFilter, he was employed as a lab and operations assistant for the city of Grand Forks, N.D. water treatment plant.

Activation Date: 
May 7, 2002
Legacy
Legacy ID: 
13106

Arsenic in Drinking Water - Part 3

Only recently has a substantial amount of data become available on the concentrations of arsenic in United States drinking water supplies. Most of these data have been accumulated by the state regulatory agencies responsible for monitoring drinking waters. Since the arsenic standard has been 50 µg/L, some state agencies have recorded arsenic concentrations only in excess of that concentration. Others have been limited by the sensitivity of the analytical techniques and equipment used for the arsenic analysis. As a result, much of the available arsenic data are “below the limits of detection.

Deck: 

Occurrence of Arsenic in U.S. Waters

About The Author: 

John T. O’Connor, EngD, P.E., is CEO of H2O’C Engineering, Columbia, Mo. Phone 877-22-WATER; e-mail: john@h2oc.com.

Activation Date: 
May 6, 2002
Legacy
Legacy ID: 
13091

Making the Filtration Buying Process Easier for Your Customers

If you’ve seen it once, you’ve seen it a hundred times — customers who come to you looking for a home filtration system, unaware of what their specific needs are. While many consumers simply want a system that improves their water’s taste and aesthetic qualities, the majority are looking for a product that will make their water healthier. But as you know, “healthier” is a subjective term, and without knowing the issues that are present in the customer’s water, providing them with a system that fits their needs isn’t very easy to do.

Deck: 

How Culligan helps its dealers become better-educated consumers of drinking water

About The Author: 

David M. Marsh is the director of marketing for Culligan International Co.

Publication Date: 
February 26, 2002
Activation Date: 
February 26, 2002
Issue Reference: 
Legacy
Legacy ID: 
12968

Arsenic in Drinking Water - Part 1

The National Academy of Sciences, National Research Council (NAS-NRC) report was released on September 11, 2001. It concluded that the existing health effects data on arsenic essentially were sound. In addition, their review of three new epidemiological studies indicated that the health risks posed by arsenic in drinking water were greater than previously believed. As a result, in October, well before its self-imposed deadline, EPA rescinded its March implementation ban and endorsed the 10 µg/L arsenic MCL.

Deck: 

The Development of Drinking Water Regulations

About The Author: 

John T. O’Connor, EngD, P.E., is CEO of H2O’C Engineering, Columbia, Missouri. Phone 877-22-WATER email: john@h2oc.com

Activation Date: 
February 4, 2002
Legacy
Legacy ID: 
12914

RO Maintenance

Understanding and reacting to the performance of a reverse osmosis (RO) system is necessary for continued successful operation. It is this interaction that allows us to quickly and correctly identify and correct issues that may arise.

Deck: 

Tending to System Maintenance is Necessary for Successful Operation

About The Author: 

Nevin Rudie has been in the water treatment business since 1976. He is product and applications manager at Aqua Systems, Avon, Ind. He holds a Bachelor’s degree in business management from North Central College, Naperville, Ill., and can be reached by phone at 317-707-3163; Aqua2Solve@Aol.com.

Activation Date: 
January 1, 2002
Files: 
Legacy
Legacy ID: 
12833

Filters Help Preserve 17th Century Shipwreck

To most people, water clarity is important, but the nautical
archaeologists at Texas A&M University know that to rebuild a 300-year-old
ship, it is essential. They needed filtration equipment that was up to the
task.

About The Author: 

This article was contributed by Harmsco Filtration

Activation Date: 
December 10, 2001
Legacy
Legacy ID: 
12818

Products In Action

Microfiltration, Nanofiltration Help Meet EPA Standards at Lake
Mead

About The Author: 

For additional information, contact The Dow Chemical Company at
517-636-9086.

Activation Date: 
November 21, 2001
Legacy
Legacy ID: 
12776

Process Effectively Strips Hydrogen Sulfide Gas From Wastewater

Hydrogen sulfide is a common component in wastewater treatment plant off-gases (e.g., biogas) and waste gases from certain industrial processes. It is highly toxic and odorous. Therefore, its release into the atmosphere is regulated. In addition, it is very corrosive, which can result in costly damage to equipment and piping systems used in biogas handling. Several technologies exist for removing H2S from gas streams, but many suffer from drawbacks such as insufficient removals, complexity or high cost.

Publication Date: 
November 13, 2001
Activation Date: 
November 13, 2001
Legacy
Legacy ID: 
12770
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