商品簡介
Association staff members have compiled information, charts, graphs, formulas, and definitions that are used by water system operators in performing their daily duties. The information is otherwise scattered among many books and manuals that would be tedious to haul around and pore through. The first edition was published in 2004, and this second is updated to reflect current standards. The sections cover basic math; units of measure and conversion; chemistry; safety; water quality; water treatment; chemical additions; distribution; wells; pumps; pressure, flows, and meters; abbreviations and acronyms, and a glossary. Annotation c2012 Book News, Inc., Portland, OR (booknews.com)
