TM 10-4610-310-14
0010 00
CHEMICAL INJECTION continued
ANTISCALANT
OUTLET
SODIUM
BISULFITE/
COAGULANT
OUTLET
ANTISCALANT
TANK INLET
COAGULANT
TANK INLET
HYPOCHLORITE
TANK INLET
Figure 5. Chemical Injection Quick Disconnects.
Coagulant Mixing Instruction
Coagulant is used when the source water turbidity is higher than 150 NTU. It pulls the small suspended particles
together to form larger clumps which then settles to the bottom or are trapped by the filtering materials.
1. Use the graduated cylinder in the BII box to mix in 130 mL of coagulant (M322) to the coagulant/bisulfite
chemical tank T6. Bottle is identified with a red circle.
2. Fill the appropriate tank half way with potable product water.
3. Make sure all caps are closed and tight on the tank before shaking. Mix solution well by shaking the
chemical tank T6.
4. Finish filling with product water.
5. Open vent cap on the chemical tank T6 to expose the vent hole.
6. Retrieve chemical injection tubing from the COEI box.
7. Connect the chemical injection tubing from the coagulant/sodium metabisulfite outlet on the chemical
module to the chemical injection point on the raw water inlet spool piece connection. See Figure 4 and
Figure 5.
Antiscalant Mixing Instruction
Antiscalant is used only when the source water is seawater (at or above 20,000 ppm source water). It helps
prevent the salts and minerals present in the seawater from forming a "scale" on the RO membrane surfaces,
which in turn will diminish the performance of these membranes.
1. Add 20 ml of (M321) antiscalant using the graduated cylinder from the BII box to the antiscalant chemical
tank T5. Chemical is identified with a blue square.
2. Fill the chemical tank up half way with potable product water.
3. Make sure all caps are closed and tight on the tank before shaking. Mix solution well by shaking the
chemical tank T5.
