Filtering Through the Options

The Watsonville Wastewater Treatment Facility currently pumps 400 gallons per minute through the Tekleen water filter manufactured by Automatic Filters in Los Angeles.

Deck: 

Watsonville, Calif. incorporates automatic filter to recycle treated wastewater

About The Author: 

Elaine Floyd is a freelance writer based in Bellingham, Wash. For further information, phone 310/839-2828.

Activation Date: 
August 7, 2003
Legacy
Legacy ID: 
14331

Arsenic Treatment

A wide range of technologies, some new and some more traditional, is being marketed and applied for arsenic treatment. Each of these technologies has specific properties impacting its suitability for any particular scale of application. While rare, the ability of a single water treatment technology to perform effectively across many treatment platforms is not unique.

Deck: 

Cross-platform viability of treatment technologies

About The Author: 

Dr. Ley Hathcock is vice president of operations and marketing. He holds a Ph.D. in analytical chemistry with more than 15 years of international business management and product development experience in the adsorbent and environmental industries. Rich Cavagnaro, president of Adedge Technologies, Inc. has nearly 20 years of international business experience in strategic marketing, business development, product development and commercialization of new products and services in a broad spectrum of industries. Greg Gilles, vice president of engineering and business development, has more than 20 years of treatment technology, industrial, regulatory, engineering and management experience.

Publication Date: 
May 30, 2003
Activation Date: 
May 30, 2003
Files: 
Issue Reference: 
Legacy
Legacy ID: 
14120

Greensand Process Removes Iron, Manganese, Arsenic from Groundwater

Manganese greensand is a specially processed medium for iron, manganese, and hydrogen sulphide removal. This premium non-proprietary filter medium is processed from glauconitic greensand on which a shiny, hard finite thickness manganese oxide coating is formed and is firmly attached on every grain by a controlled process.

Activation Date: 
March 13, 2003
Legacy
Legacy ID: 
13846

Filtration Fundamentals

Over the years, water quality has noticeably deteriorated worldwide. This decline in water quality stems from the extreme demand on very limited natural resources. Various principles of filtration are used in many applications to improve the general quality of the water that is being treated. Along with screen filters, coagulation/filtration, neutralizing filters, oxidizing filters, clairifying filters and carbon filters are other treatment methods that may be used.

Deck: 

Various filter technologies stretch limited natural resources for drinking water

About The Author: 

Bill Kavey, CWS IV, is employed at Kavey Water Equipment Corp., which was acquired by Crane Environmental in January 2002. The merger combined Kavey's strength in pretreatment with Crane Environmental's manufacturing of small, medium and large reverse osmosis systems to provide more complete water purification solutions.

Publication Date: 
March 11, 2003
Activation Date: 
March 11, 2003
Files: 
Legacy
Legacy ID: 
13840

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