Water treatment device

摘要

A water treatment system, for example for treating grey water from domestic appliances comprises a water treatment device containing a filter media through which the water passes to remove particulates and bio-matter. The device has a lid provided with a spraying device. The spraying device may, for example, receive treated water along a line, possibly with the addition of an anti-foaming agent. Operating of the spraying device thus serves to collapse any foam generated within the water treatment device. Filter media can be cleaned periodically in a cyclone, after being drawn up through a pipe by means of a jet pump, receiving treated water along a line. Treated water is stored in a storage tank for subsequent use.

主权项

1. A water treatment device comprising:
a housing having a cylindrical side wall and defining a filter chamber, a filter body comprising a permeable wall which contains a granular filter media and is disposed within the filter chamber, an annular passage defined between the cylindrical side wall of the housing and the filter body, the permeable wall permitting flow from the annular passage into the granular filter media an inlet in the housing for water to be treated, the inlet opening into the annular passage and being disposed so as to create a circulating flow within the housing, a clean water outlet for treated water that has passed through the filter media, an overflow outlet for overflow water, a source of an anti-foaming agent, a spraying device connected to the source of an anti-foaming agent, the spraying device being situated above the filter media for spraying the anti-foaming agent in a direction towards the filter media, wherein the permeable wall is provided with a blocking element preventing flow through the permeable wall at the region of the permeable wall adjacent the inlet.