The most common coagulants used in chemical treatment of wastewater are aluminum sulfate, ferrous sulfate (copperas), lime and ferric chloride. All supply divalent or trivalent ions for neutralization of charge. A new approach is electrocoagulation....

The goal of water treatment, usually from surface sources such as lakes, reservoirs, or rivers, is to remove contaminants and organisms through a combination of biological, chemical, and physical processes to make it safe for drinking. Some of these...

Water treatment describes a process used to make water more acceptable for a desired end-use. These can include use as drinking water, industrial processes, medical and many other uses. The goal of all water treatment process is to remove existing...

The $6.2-billion global market is split into two categories: service and ingredients. The service market, about $2.2 billion, is dominated by Nalco Chemical and Hercules. The U.S. portion is valued at $1.45 billion, and Nalco and Hercules have more than half of it...

face=+Bold; Organics in the boiler and steam: Good or bad?face=-Bold; Among utility chemists, opinions differ on the effect that organic compounds--both naturally occurring types and those added as treatment chemicals--have on the steam cycle. Some chemists raise the specter of corrosion of low-pressure...

Nearly 100 residents were taken to hospitals Wednesday with burns or rashes after the town's water supply was accidentally treated with too much corrosive lye, officials said. No serious injuries were reported.People in Spencer were advised not to use or touch the water until further...

New federal regulations for chemical facilities neither require nor encourage companies to switch from potentially dangerous chemicals to less hazardous substitutes, and that has some lawmakers and activists worried.Rep. Bennie Thompson, D-Miss., chairman of the House Homeland Security Committee, and three Democratic colleagues expressed "deep...