10. It is eco-friendly.
In combined use with C type (compost toilet) and W type(waste-water-from-miscellaneous-sources processing), an eco-friendly life can be performed . This is to depend on C type, for all human waste to carry out decomposition disappearance, and for no filth to be discharged outside,
|and to depend on W type, and for life waste water from miscellaneous sources to revive into spring water. Since human waste is not mixing in processing water differently from septic processing water, the amount of nitrogen is very few, and eutrophication of a river is prevented.|