Dear EarthTalk: I am very concerned about the amount of chlorine
in my tap water.
Chloramines, a chlorine-based disinfectant made from chlorine
and ammonia, does not product THMs or HAA5; but it is not as effective as chlorine
Tankers of chlorine
gas are carried daily by rail and truck through heavily populated areas; they are eventually stored at thousands of facilities across the nation.
The control system automatically matches the chemical feed to the demand, and treats the influent water with only the amount required to remove chlorine
. By measuring the actual oxidant activity, rather than the residual, the system guards against damaging chlorine
breakthrough that can degrade the membranes.
It also changed the lede to: "A truck bomb that combined explosives with chlorine
gas exploded in Baghdad on Wednesday, and officials said it may represent a new and deadly tactic by insurgents against Iraqi civilians.
The combined chlorine
reading is used to calculate the amount to be added to achieve breakpoint dosage.
2 to your water sample to develop a pinkish-red color proportional to the level of free chlorine
. After taking that reading, add DPD No.
* For almost a century, chlorine
has been widely used to clean drinking water.
The chemical reaction between the chromium and chlorine
tends to occur in areas where there are stress risers and where the chromium in the steel is at its highest.
Before the 1990s, lumber mills used chlorine
for bleaching, and as a result found toxins in the affluent pipes.
The most environmentally friendly bleaching methods are totally chlorine
free (TCF) an at elemental chlorine
NORDIC BUSINESS REPORT-18 March 2003-Norsk Hydro ASA to invest NOK1bn in new chlorine
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