Contaminant Removal

May 29 2002
Conventional Treatment: Precipitation with Iron, Aluminum As early as 1972, prior to the start of the U.S. Environmental Protection Agency (EPA)...
Apr 30 2002
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...
Apr 30 2002
Metals such as bronze, copper and iron have been used for thousands of years by man for both peaceful and non-peaceful purposes. One of the most...
Mar 28 2002
On November 26, 2001, the new arsenic standard was signed into law—lowering the acceptable level for the contaminant from 50 parts per billion (ppb)...
Mar 4 2002
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...
Feb 26 2002
Chlorination and Its Alternatives Purification of drinking water containing microbiological contamination requires some form of...
Feb 26 2002
POU Technology Demonstrates Effectiveness In March 2001, the U.S. Environmental Protection Agency (EPA) withdrew a proposal for a lower...
Jan 23 2002
Recent market research showed that more than 73 percent of consumers prefer to consult with a water treatment professional when dealing with arsenic...
Jan 21 2002
Arsenic is widespread in almost all types of soil, particularly in association with iron and sulfur compounds. Accordingly, much has been made of the...
Dec 3 2001
West of Scotland Water (WoSW) awarded a contract, under competitive tender, for its first ultrafiltration plant to PCI-Water. The treatment works,...
Dec 3 2001
Arsenic often is remembered as a poison, used since medieval times to eliminate unsuspecting persons. In those days, arsenic was a perfect murder...
Nov 13 2001
The biocidal effects of copper and silver have been used for centuries. The early Greeks and Romans made water storage and drinking vessels out of...
Nov 9 2001
The topic of arsenic has received a lot of press coverage this year, ever since the Bush administration halted the EPA’s newly issued maximum...
Jun 10 2001
Carbon block is the workhorse of filtration technologies, performing a wider range of filtration tasks than other products. Its sintered porous...
May 20 2001
The facility had two conventional water treatment plants on a small site trapped between a park and Lake Michigan, leaving little room for expansion...
Mar 13 2001
The occurrence of Cryptosporidium parvum and other pathogens in water supplies poses a dangerous problem to the water industry and human health. In...
Dec 28 2000
Escherichia coli, a.k.a. E. coli. A terrible, but familiar word to the public suggests sewage or animal waste contamination. E. coli 0157:H7 is...
Dec 28 2000
Recent television news acknowledging the methyl tertiary butyl ether (MTBE) problems has brought attention to this subject once again. Although this...
Dec 28 2000
A new water disinfection system has been developed to inactivate Cryptosporidium oocysts and Giardia cysts in drinking water. The technology, known...