MODEL 400 CHEMICAL FEEDER

To oxidize 1 PPM of Hydrogen Sulfide (H₂S), it takes 2.2 PPM of Chlorine (Cl₂).
To oxidize 1 PPM of Iron (Fe) it takes .64 PPM of (Cl₂).

Example: If you have a 4 PPM of Fe and 1 PPM of H₂S, look on the vertical portion of the graph labeled PPM and start at 4 and move horizontal to the line marked Iron - Fe x .64 Cl₂ and then down to the bottom of the graph marked Chlorine - Cl₂ PPM. It should intercept the bottom at about 2.6. This is the amount of Cl₂ needed to oxidize 4 PPM of Fe. Now look on the vertical portion of the graph labeled PPM and start at 1 and move horizontal to the line marked Hydrogen Sulfide - H₂S x 2.2 Cl₂ and then down to the bottom of the graph. It should intercept the bottom at about 2.2. This is the amount of Cl₂ needed to oxidize 1 PPM of H₂S.

• 4 PPM Fe requires 2.6 PPM of Cl₂.
• 1 PPM H₂S requires 2.2 PPM of Cl₂.
• Total Cl₂ required is 2.6 + 2.2 = 4.8 PPM Cl₂.

• 20 PPM H₂S x 2.2 Cl₂ = 44 PPM of Cl₂.
• 20 PPM Fe x .64 Cl₂ = 12.8 PPM of Cl₂

If using a 42 gallon pressure tank, the No. 2 hole on the chemical feeder should be used. This will dispense about 8PPM of Cl₂, and a filter with 1 cube of activated carbon after the unit will eliminate the excess Cl₂. If using the chemical feeder for iron removal or extremely high H₂S, it is necessary to use a retention tank and a back washing valve on the carbon filter.

The Chemical Feeder will hold about 4 lbs. of Cl₂ (1 gram tablets). If it is adjusted to the No. 1 hole, and using a 42 gallon pressure tank with 1 cube of activated carbon, the system should process approximately 20,000 gallons of water before the unit would need refilling.

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