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The strength of chlorine-releasing solutions, as well as their dosage in uses like water chlorination and pool sanitization, is usually expressed as mass concentration of "free chlorine" or "available chlorine". It is the mass of chlorine gas (Cl 2) that would yield the same oxidizing power as the product contained in (or applied to) a specific ...
The solution travels to a tank that separates the hydrogen gas based on its low density. [1] Only water and sodium chloride are used. The simplified chemical reaction is: NaCl + H 2 O + energy → NaOCl + H 2 [citation needed] That is, energy is added to sodium chloride (table salt) in water, producing sodium hypochlorite and hydrogen gas.
The time required to remove half of the chloramine from 10 US gallons (38 L; 8.3 imp gal) of water by boiling is 26.6 minutes, whereas the half-life of free chlorine in boiling 10 gallons of water is only 1.8 minutes. [16] Aging may take weeks to remove chloramines, whereas chlorine disappears in a few days. [17] [18]
The Massachusetts Water Resources Authority (MWRA) is a public authority in the Commonwealth of Massachusetts that provides wholesale drinking water and sewage services to 3.1 million people in sixty-one municipalities and more than 5,500 large industrial users in the eastern and central parts of the state, primarily in the Boston area. [2]
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MWRA pelletizing plant in Quincy, Massachusetts. After secondary treatment, 85% of the pollutants in the waste stream have been removed. The stream is then treated with sodium hypochlorite to kill bacteria, and then with sodium bisulfite to remove the chlorine. The waste stream is then discharged into a 9.5-mile long, 24-foot diameter gravity ...
The chlorination of the water supply helped stop the epidemic and as a precaution, the chlorination was continued until 1911 when a new water supply was commissioned. [7] Manual Control Chlorinator for the liquefaction of chlorine for water purification, early 20th century. From Chlorination of Water by Joseph Race, 1918.
Aug. 9—AmeriGas has issued a recall notification "out of an abundance of caution" for propane barbecue grill tanks sold in southern and central New Hampshire and the Greater Boston area between ...
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