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

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