Apparatus for the chlorination of waste water; apparatus for waste water purification; industrial waste water purification plants; installations for the purification of waste water; installations for the recycling (purification) of waste water; installations for the treatment of industrial waste water; installations for waste water engineering; waste water treatment apparatus; waste water treatment installations; apparatus for filtering water; apparatus for purifying water; apparatus for waste water purification; apparatus for water filtering; apparatus for water supply purposes; installations for the purification of waste water; installations for the recycling (purification) of waste water; installations for waste water engineering; installations for water filtering; installations for water filtration; installations for water purification; membrane purifying apparatus for the purification of water; membranes for the filtration of water; waste water treatment apparatus; waste water treatment installations; water filtering apparatus for domestic use; water filtering apparatus for industrial use; water filtration apparatus; water filtration installations

Treatment of waste water; waste water treatment; treatment (purification) of water; treatment of waste water; treatment of water; waste water treatment; water purification; water treating; water treatment