PURPOSE: To make it possible to easily and effectively add useful bacteria to a septic tank by enclosing a bacterium holders which have plural small holes and are fermented by adding water thereto into a container and installing this container in the septic tank in such a manner that these ...
Such bacterium adding device A is used by installing the device freely suspendably in the settling and separating chamber of the septic tank. The liquid contg. the bacteria is made to flow into the settling and separating chamber and the untreated feces, etc., in the settling and separating ...