Water Development
Found 3 free book(s)
Chloride in Drinking-water - World Health Organization
www.who.intChloride in Drinking-water Background document for development WHO Guidelines for Drinking-water Quality _____ Originally published in Guidelines for drinking-water quality, 2nd ed. Vol. 2. Health criteria and other supporting information, World Health Organization, Geneva, 1996.
Fluoride in Drinking-water - World Health Organization
www.who.intFluoride in Drinking-water, Background document for development of WHO Guidelines for Drinking-water Quality, is an update of the background document published in the second edition of the Guidelines. The update was prepared by Mr J. Fawell, United Kingdom, to whom special thanks are due.
How Wastewater Treatment WorksThe Basics
www3.epa.govTo return more usable water to receiving lakes and streams, new methods for removing pollutants are being developed. Advanced waste treatment techniques in use or under development range from biological treatment capable of removing nitrogen and phosphorus to physical-chemical separation techniques suchfiltration, carbon adsorption,