Ultrafiltration

Ultrafiltration (UF) rapidly is becoming a common and practical method of preparing pure water that is free of particulate matter.

Deck: 

The Use of Nephelometric Light Scatter to Monitor Ultrafiltration Performance

About The Author: 

Mike Sadar is a research and development scientist at Hach Co. Sadar serves on the standard methods and ASTM comittees involved in the development or modification of methods associated with turbidity or particle measurement. He has received several patents related to the development of products and methods used to simplify the calibration and verification of turbidimeters and particle counters.

Activation Date: 
January 1, 2001
Issue Reference: 
Legacy
Legacy ID: 
11932

8th Annual Activated Carbon Conference Show Review

The 8th Annual International Activated Carbon Conference (IACC-8) and optional training courses took place on Sept. 18—23. This article provides a brief review of some of the activities and summaries of the speakers’ topics.

About The Author: 

Barbara Sherman, MS, is responsible for short courses and conferences at Professional Analytical and Consulting Services, Inc. (PACS). She coordinates short courses in public and at the client’s time and place. She can be reached at 800-367-2587; fax 724-457-1214; http://members.aol.com/hnpacs/pacs.htm
Henry G. Nowicki, Ph.D., MBA, is president of PACS, which conducts research and development to take out and put chemicals into activated carbons. PACS has developed software programs for the activated carbon industry: the AC Tester instrument to evaluate used and unused activated carbons’ remaining service life, ASTM laboratory testing, GC/MS, ICP/AA instrumental chemical analysis and consulting services. He may be reached at Hnpacs@aol.com; 724-457-6576; fax 724-457-1214.

Activation Date: 
January 1, 2001
Files: 
Legacy
Legacy ID: 
11933

Water Reuse for Drought-proof Industrial Water Supply in San Diego

A 200,000 gallon per day (gpd) advanced microfiltration system treats secondary wastewater effluent for reuse as process water for Toppan Electronics, Inc. in San Diego, Calif.

About The Author: 

For further information, contact Pall Corporation, Port Washington, NY
Phone 516-484-3600
www.pall.com/water

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11897

Roundtable Discussion: E. coli (Escherichia coli)

Escherichia coli, a.k.a. E. coli. A terrible, but familiar word to the public suggests sewage or animal waste contamination. E.

Deck: 

Recent outbreaks of E. coli have brought consumer’s attention to their drinking water. Understanding its source, regulations and prevention will be key to combating this waterborne illness

About The Author: 

Wendi Hope King is the editor of Water Quality Products magazine.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11900

Pennsylvania Filtration Plant Helps Meet NPDES Discharge Requirements

In the early 1990s, the Milford-Trumbauersville Area Sewer Authority in Bucks County, Pennsylvania, recognized the need to upgrade the existing sewage treatment plant. This was necessary to increase capacity and to meet future more stringent requirements set by the Pennsylvania Department of Environmental Protection for Unami Creek.

About The Author: 

For further information, contact USFilter Davco Products, Sturbridge, MA — Phone 800-347-1202 — www.water.usfilter.com

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11868

In-Home Systems: Utilizing RO and NF Elements

Innovations in membrane technology, which has been used in major industries and hospitals, are driving the industry into the home.

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11862

Well Water Treatment: Ozone Helps Solve Water Problems at Bassi Ranch

An analysis of the raw well water (Table 1) shows a pH of 7.9 and 30 color units with >20 mg/L hydrogen sulfide, 5.6 mg/L iron and 0.6 mg/L manganese. Odor was detected at 10 threshold odor number (TON), indicative of the high hydrogen sulfide levels. To meet these water problems head-on, the homeowners formed the Bassi Ranch Mutual Water Co. in 1992.

About The Author: 

Ted Rich has been the director of marketing for ClearWater Tech LLC of San Luis Obispo, Calif., since 1992. The company manufacturers a complete line of mid-sized ozone generators for a variety of water treatment applications. For more information, visit the ClearWater Tech website at www.cwtozone.com; 800-262-0203; cwt@cwtozone.com

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11830

Membrane Filtration As an Alternative: Part 2

Part one of this article appeared in the July issue and discussed microfiltration and utrafiltration. This article discusses nanofiltration and reverse osmosis.

About The Author: 

Dr. Mohamed Lahlou is the technical assistance specialist for the National Drinking Water Clearinghouse. This article originally appeared as a tech brief for the NDWC.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11813

Membrane Filtration as an Alternative: Part 1

Once considered a viable technology only for desalination, membrane processes are increasingly employed for removal of bacteria and other microorganisms, particulate material and natural organic material that can impart color, tastes and odors to the water.

About The Author: 

Dr. Mohamed Lahlou is the technical assistance specialist for the National Drinking Water Clearinghouse. This article originally appeared as a tech brief for the NDWC.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11775

Legionella: Minimizing Risks

Legionellosis, the disease caused by Legionella spc., is common, though most people would guess it is extremely rare. Outbreaks of Legionellosis, defined as a cluster of three or more cases in a single locale, occur regularly in the United States and much of the developed world. Outbreaks have been reported in Australia, Holland, Thailand, Japan, England and many other countries. In the U.S., the Center for Disease Control (CDC) receives reports of 1,000 cases of Legionellosis annually.

About The Author: 

W. Craig Meyer is a professor of environmental sciences at Pierce College, Woodland Hills, California.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11799