Abstract: A laminated modular water filter includes a top plate, a bottom plate and a plurality of superposed intermediate plates disposed between the top and bottom plates. Each adjacent pair of the top, intermediate and bottom plates are interconnected removably, and define an accommodating space therebetween, within which a filter unit is received fittingly. Each of the top and bottom plates has a central hole which is in fluid communication with central holes in the intermediate plates, and two side openings which are in fluid communication with a plurality of annular outer passages units in the intermediate plates that are in fluid communication with the accommodating spaces. Each of the filter units includes two filter films interconnected fixedly along outer peripheries thereof, and a filter net disposed between the films so as to define an annular filtered-water passage between the films that is fluid communication with the central holes.

Abstract: A laminated modular water filter includes a top plate, a bottom plate and a plurality of superposed intermediate plates disposed between the top and bottom plates. Each adjacent pair of the top, intermediate and bottom plates are interconnected removably, and define an accommodating space therebetween, within which a filter unit is received fittingly. Each of the top and bottom plates has a central hole which is in fluid communication with central holes in the intermediate plates, and two side openings which are in fluid communication with a plurality of annular outer passages units in the intermediate plates that are in fluid communication with the accommodating spaces. Each of the filter units includes two filter films interconnected fixedly along outer peripheries thereof, and a filter net disposed between the films so as to define an annular filtered-water passage between the films that is fluid communication with the central holes.

Abstract: A waste water treatment system includes an electrodialysis reactor, a negative electrode plate immersed in waste water in the reactor, an anion-selective membrane unit defining a compartment and immersed in the waste water in the reactor for selectively permitting negative ions in the waste water to enter into an interior of the compartment, and a reverse osmosis membrane unit for periodically receiving the waste water from the reactor to separate the waste water into a stream of concentrated solution and a stream of water.

Abstract: An apparatus includes a housing, a filter assembly, a water storage tank, a circulating unit connected to the storage tank for receiving water from the storage tank and for returning the water from the circulating unit to the storage tank, a UV sterilizing unit connected to the circulating unit and adapted to sterilize the water flowing through the circulating unit, a fluoridating unit connected to the circulating unit and adapted to add fluorine to the water flowing through the circulating unit, and a water supply part connected to the circulating unit adapted to supply the sterilized and fluoridated drinking water.