Aqua-Pure CSX200 - Manual (Page 14)

Desired gallons of solution = 12
Mixture ratio of sulfur reduction media = 1.0
Mixture ratio of water = 2.0
12 12
1.0 + 2.0 = 3.0 = 4 gallons of sulfur reduction media required
12 - 4 = 8 gallons of water required
EXAMPLE 5
Desired gallons of solution = 10
Mixture ratio of sulfur reduction media= 1.0
MIXTURE RATIO OF WATER = 2.0
10 10
1.0 + 2.0 = 3.0 = 3.33 gallons of sulfur reduction media required
10 - 3.33 = 6.67 gallons of water required
EXAMPLE 6
A ratio of 1:1 exists and we have 1 gallon of sulfur reduction media and 1 gallon of water for a total of 2 gallons of mixture, the dilution rate of sulfur reduction
media is 1/2 or 50%, since there is 1 gallon of sulfur reduction media in 2 gallons of mixture.
A ratio of 1:3 gives 4 gallons of mixture, so the dilution rate of sulfur reduction media is 1/4 or 25%.
A ratio of 2:1 gives 3 gallons of mixture, so the dilution rate of sulfur reduction media is 2/3 or 66.7%.
It should be noted that the dilution is stated as: 1 gallon of sulfur reduction media is diluted with 1 gallon of water (1:1 ratio), 1 gallon of sulfur reduction media
is diluted with 3 gallons of water (1:3 ratio) or 2 gallons of sulfur reduction media is diluted with 1 gallon of water (2:1 ratio). It would be just as correct to
state: 3 gallons of water is diluted with 1 gallon of , but the ratio should now be changed from 1:3 to 3:1. The dilution rate can be stated for any component in
a mixture, but care should be taken when it is referred to in the ratio form.
Now that we have discussed the ideas of dilution rate and ratio, we can discuss the fi ne-tuning of the system to the most economical operating condition.
The basic, underlying idea of the fi ne-tuning process is to have the highest feed pump stroke frequency at the highest dilution rate of the solution. The deci-
sion whether or not to dilute can be based roughly on the stroke frequency percentage at the point where the sulfur odor disappears. If the percentage is
50% or less, the solution can be diluted 50%. After the dilution, the feed pump should once again be adjusted to the point where the smell disappears. This
adjustment process should be repeated until the feed rate exceeds 75%. There is no need to adjust the feed pump to a precise setting each time. Since the
hydrogen sulfi de gas concentration will vary from day-to-day, the best, most precise setting today may not be tomorrow. The feed pump should be adjusted
until it is set above 75%.
If upon initial installation you fi nd the feed rate is above 75% and you are feeding undiluted sulfur reduction media, it may be more economical to include an
aerator in the treatment system. An aerator will reduce the sulfur concentration 50 - 75%, depending on its effi ciency and could reduce the cost of operation
for the system substantially.
Although we have discussed the concepts of dilution in specifi c relation to the system, the same ideas hold true in other instances where dilutions may be
necessary. These situations could include chlorination, soda ash addition for pH adjustment or even when conducting tests on water samples.
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