ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
0027 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
OPERATOR INSTRUCTIONS
OPERATION UNDER UNUSUAL CONDITIONS
c.
If treating water contaminated with cyanide, set up the hypochlorite chemical system after
water production is established (with the product hose disconnected from the A-15
adaptor) as follows:
1) Hypochlorite is not used. In its place, AC-350 caustic is used to increase the pH
of the product water to a value of 10.5 to 11. This improves the rejection of the
cyanide when the product water is treated in the second pass operation.
2) Record the product water TDS and flow rate after start up.
3) Calculate the amount of AC-350 caustic required in milliliters to be added when
filling the chemical bucket:
Factor A = Product TDS (in mg/L) x 0.141 + 9.8
Amount = 2.97 x Factor A x Product Flow (gpm)
4) Use the Bisulfite chemical bucket (blue cover) in place of the hypochlorite bucket.
Fill the bucket with product water from the utility hose to the 4.5-gallon mark.
5) Prime Chemical Pump CP-3 following the procedure for normal operation (WP
6) Set the chemical pump speed dial to 70 and the stroke dial to 60.
7) Wash out the 1000 ml measuring cup.
WARNING
Caustic chemical. Wear goggles, a protective face shield, chemical gloves, and a
chemical apron when handling caustic solution. Contact with caustic will result in
severe chemical burns. Keep water ready when handling. Avoid inhaling chemical
fumes. If the caustic spills, immediately flush the area with water from the
auxiliary hose. Failure to observe this warning may result in severe irritation of the
nose, throat, and eyes. Contact with skin will result in severe chemical burns if not
immediately rinsed off.
8) Put on the chemical apron, the goggles, the face shield and the chemical gloves.
Open one container of AC-350 caustic and slowly pour out the calculated amount
into the measuring cup.
9) Slowly pour the measuring cup into the chemical bucket. Rinse the measuring
cup in the chemical bucket and then in a bucket of clean water.
10) Mix the caustic with the chemical mixing paddle.
11) Check the product water pH (WP 0016). Adjust the stroke as needed to achieve
a pH between 10.5 and 11.
12) Connect the product hose to the A-15 adaptor to fill the distribution tank(s).
d. Continue to operate normally until the single MC-TWPS distribution tank or the three A-
TWPS extended distribution tanks are filled.
e. Shut down to Standby with drain down (WP 0017).
3. Set up the MF tank for the second filtration pass as follows:
a. Drain the MF Feed tank.
b. Remove Bag Filter S-1 from the MF tank and set aside for later use or disposal.
c. Rinse out the MF tank with "First Pass Product Water" from the distribution system.
d. Set up the MF tank for normal operation, but do NOT install bag filter S-1 (WP 0007).
e. Fill the MF Feed Tank full with "First Pass Product Water" using a distribution nozzle.
0027 00-11
