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This system is based on a daily flow of
10 litres per person using 1.2 litres of water per flush. The holding tank is
at atmospheric pressure, the pressure switch maintains a vacuum in the line
from the toilets by auto start‑stop of centrifugal pump. The sewage in the tank
is used as driving water for the eductor.
Float switches may be used to
control the discharge from the holding tank to the sewage treatment plant
whilst still maintaining the vacuum in the system; alternatively the collecting
tank can form the first stage of an aerobic treatment plant.
Advantages: Small size
Can
be positioned with greater flexibility compared to aerobic plant, wc’s can be
below tank.
No
chance of foul gases entering accommodation due to positive isolation.
Disadvantages: Increased maintenance
Specialist equipment required
Vacuum can be dangerous
5 comments:
Great Post ! Thank You
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