Oxfam TIGER WORM TOILET, Руководство по эксплуатации

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Frequently Asked Questions - FAQs
What stops the worms from escaping either down into the soil or climbing out of the pit?
When the environment in the pit is correct, the worms will stay present. They will not climb out of the pit.
How do you prevent the worms getting too hot or too cold?
The optimal temperate range is from 5 to 35 degC. The construction of the pit helps keep the worm environment
at a stable temperature.
Can medical drugs, alcohol or any disease in people harm the worms?
No. Diseases in humans will not affect the worms. Drugs and alcohol would be in too low concentrations to
affect the worms.
How do you know the maximum level of the water table?
The local community will likely know this, particularly if there are dug well or handpumps. Local borehole and
toilet contractors are also good sources of information.
How long can I wait between putting the worms in the pit and people starting to use the toilet?
People should start using the toilet at the same time as the worms are placed in the toilet. If this is not possible,
food should be placed in the pit for the worms, such as cow manure or organic food waste and water the pit each
day to maintain the moisture until the toilet starts to be used.
Can people start using the toilet before the worms are placed in the pit?
People can start using the pit up to a month before the worms are added to the pit.
How much do worms cost?
This varies significantly by country. Identify and contact possible worm suppliers to confirm the cost and available
quantity before deciding to use TWTs.
How to transport worms from the supplier to the site?
See the worm transportation guide in the annex.
How does desludging frequency compare to a normal toilet?
This depends on the number of users and size of a normal toilet pit. In the Rakhine camps the TWTs did not
require emptying in more than one-year, whereas the normal camp toilets normally require desludging every
6-months. Single household TWTs have been shown in other countries to only require emptying after 5-years.
A traditional pit latrine with a 1.5m
3
pit and serving 5 users would also be expected to only require emptying
after 5-years.
Can we use the vermicompost as a fertilizer?
There is not yet enough evidence to support using vermicompost as fertiliser on crops or fruit trees. Therefore, this
should not be done.
How many kg of worms do we need for 1m x 1m x1.2m deep?
Note that 60% of the Biodigester volume is occupied by the coconut coir, filtration material and diverse structures
(porous slabs) and compartment (effluent transit chambers). However, the 2Kg E.Eugenia still have the 1m2
surface * 0.4 cm deep available to freely move inside the Biodigester.
What are the typical environmental conditions for tiger worms to survive?