WATER PURIFICATION DEVICE.

摘要

A device (1) for purification of water driven by gravity through a purification unit be- tween an upper dirt water container (2) and a lower clean water tank (3) that may be sealed against the environment for preventing contamination. The device may also be provided a vent tube (12) for venting of air from the upstream side of a membrane in the purification unit. Advantageously, the tube (12) extends upwards to the upper edge of the dirt water container (2). Also a backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.