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Reverse Osmosis Water Purification Unit - Continued | Up
Utilitiesman Volume 01 - Manual for electric, plumbing, water and other utilities | Next
Figure 2-31.—Water flow through the ROWPU. |
Figure 2-30.—Portable onion skin bladders, 3,000 gallon.
12. All of the dissolved solids are removed from the
water in the membranes. The membranes consist of
rolls of thin film that separate dissolved solids from the
water.
13. Once the water comes out of the RO elements,
the chlorine pump injects chlorine into the product
water to kill bacteria that is present. If the chlorine
pump is not in use, you must batch chlorinate the water
in the bladder or storage container.
14. The product water tank is a storage device for
holding product water (potable water). The tank may be
a bladder, a container, or a collapsible tank.
15. The distribution pump is used to move the
product water from the product-water tank into
vehicles, tank trailers, and so forth.
16. A distribution nozzle is used to fill the end-users
container.
17. Diluted citric acid cleans the RO elements. The
citric acid lowers the pH of the water and improves the
salt rejection of the elements.
18. A separate storage tank is used for the brine
water. The brine is used to flush the multimedia filter.
The backwash pump (19) forces the brine backwards
(from bottom to top) through the filter media to flush out
any unwanted accumulation in the filter.
19. The backwash pump provides pressure that
pumps the brine through the multimedia filter for
backwashing.
The ROWPU can purify 13.5 gallons per minute of
product water from a fresh or brackish water source and
12 gallons per minute of potable water from a seawater
source.
Temperature has a substantial effect on the
quantity of product water the ROWPU can produce.
The higher the temperature of the raw water, the more
product water the ROWPU can produce. At 77°F the
ROWPU can produce 600 gph from fresh or brackish
water and 400 gph from seawater. Again, as the
temperature of the water increases so does the flow of
product water.
You can obtain more information about the
ROWPU operation, setup, maintenance, and
troubleshooting in the TM 5-4610-215-24, Water
Purification Unit, Reverse Osmosis 600 GPH Trailer
Mounted. Additionally, every NMCB is required to
have eight UTs. This is accomplished by sending them
to the SCBT 740.2, Water Treatment II course.
Q1. What is the primary responsibility of the
Seabees?
Q2.
What is the first procedure you should perform
after receiving an ABFC assembly?
Q3.
Where should the portable bath unit suction hose
be located in relation to the wastewater drain?
Q4.
Type I portable space heaters can be operated
with what two types of fuel?
2-35
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