Amount(weight) of HTH necessary to chlorinate drinking water to a final concentration of 0.2 ppm?

Answer 1

Chlorine is available as calcium hypochlorite (HTH -65 to 70% available chlorine), 6 ounce bottle, a granular solid or sodium hypochlorite in varying strengths, as a liquid. Common household bleach is a 5.25% solution of sodium hypochlorite. Calcium hypochlorite (HTH) is most frequently used because of its relatively long shelf life and lesser space requirements.

.The following figures give the "dosage rate" for chlorination. The quality of water, e.g., the organic and inorganic materials present, will affect the final chlorine residual. The amount of chlorine required to react with and be absorbed by these materials is called the "chlorine demand." The chlorine absorbed or neutralized has no disinfectant value, so it is necessary to add enough chlorine (adequate dosage rate) to satisfy the "chlorine demand" and still provide FAC( the active disinfecting agent) and is the chlorine reading determined with the colorimetric test kit.

As a rough calculation, a dosage rate of 1 ounce of calcium hypochlorite (65 to 70%) per 5,000 gallons yields 1.0 ppm. Because of chlorine demand, this dosage rate will probably produce a FAC residual of about 0.2 ppm after a 30-minute contact period.

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Answer 2

Doesn't that depend on the regulations of the individual State, County, and City or Town codes?
Also, it depends on the water itself... How "Hard"(mineral deposits) the water is, and the "threat" of bacteria found in the area.
Here in the Desert of S.E. NM and W. Texas the density of the water can change within a few miles, then we also have large dairy farms and ranches scattered around, along with the oil-industry, so they are constantly changing the chlorine levels of the water.
Note; all of our water comes from the "aquifer"(well-water) that supplies the whole region, so they take extra precautions from town to town. These towns are 20-30 Mi. apart.
Call your local Utility Dept.(Water) and ask them, they can send you some helpful information concerning your dilema, or go on-line and look up your State's regulations also.
They have loads of information and it is public record, and your local officials will be more than happy to explain their proceedures, did I mention that it is also covered under Federal Law to inform the residents of the community?
I hope you find what you are looking for, and I'm sure you will...

Answer 3

Before I can answer that I have to know the gallons amount.But , my suggestion is to go to a swimming pool co. with the gallons you are dealing with