Pulse dampener. A ball-shaped metal tank used to reduce pulses in
water flow caused by pistons of RD pump.
RO elements. Rolls of thin fiIms that separate dissolved solids from the
raw filtered water.
Chlorine feed pump. Adds chlorine to product water to kilI bacteria to
make water in tanks drinkable.
Product water tanks. Storage containers for product (drinkable) water.
Distribution pump. Pumps drinkable water from produced water tank
into the water-carrying vehicle or container.
Distribution nozzle. Used for fiIIing user's container with drinkable water
coming from product water tanks by way of the distribution pump.
Citric acid feed pump. Adds diluted citric acid (tricarboxylic) to fiItered
water to maintain the desired pH for the RO process to take place.
Backwash water tank. Stores brine water used for flushing the
Backwash pump. Pumps brine backwards from backwash tank through
the multimedia filter to flush out accumulated dirt and recirculates citric
acid solution through the RO elements to clean them.
Figure 5-18. Rear view of ROWPU (generator removed).