Ventilated improved pit toilets, ordinarily known as VIP
lavatories, are an improvement to beat the hindrances of the straightforward
pit restrooms. The principle issues related with customary basic pit
lavatories, for example fly and mosquito irritation and horrendous scents, are
successfully limited by the activity of a vent pipe, fly screen and a crouching
spread in the VIP toilets. the entire framework is appropriately built as a
successful sanitation choice for both rustic and urban zones by planning the
pit either as a solitary pit or a rotating twin pit framework.
Why construct a VIP lavatory?
VIP toilets successfully control smell and flies while as
yet enabling clients to clean themselves with hard materials, for example,
paper and leaves which may not appropriate for use with a pour-flush restroom.
A hunching down plate or a platform can be installed.(See Figure 1 and inset.)
Figure 1:A ventilated improved pit restroom
How a VIP toilet functions
Wind blowing over the highest point of the ventilation pipe
makes air in the pipe rise. Substitution outside air is drawn into the pit
through the superstructure and down the can opening. This progression of
natural air keeps the superstructure free of scents. At the point when there is
no wind, air in the vent pipe will keep on moving upwards, if the pipe is being
warmed by the sun.
Structure Consideration for VIP Latrines
Structure Life: For single pit toilets, the plan life ought
to be as far as might be feasible, in any event 10 years is desirables. For
substituting twin pit VIP toilets the structure life ought to be 1-3 years.
Measurements: Cross sectional zone ought not be more than 2
sq. meter. Regular practice is having a breadth of 1.5-2 meter or I instance of
square or rectangular pits a width of 1-1.5 meter.
Points of interest and Disadvantages
Points of interest:
- Controls scent and bugs;
- Least wellbeing risc;
- Twin-pit VIP lavatory framework offers a long haul arrangement.
Inconveniences:
- Potential for groundwater contamination;
- Trouble of development in rough and high water table regions.
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