Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – With rehabilitation means
Reexamination Certificate
2005-01-11
2005-01-11
Pham, Minh-Chau T. (Department: 1724)
Liquid purification or separation
Particulate material type separator, e.g., ion exchange or...
With rehabilitation means
C210S275000, C210S279000, C210S291000, C210S292000, C210S293000
Reexamination Certificate
active
06841069
ABSTRACT:
The present invention relates to the raw water-filtering technical field, and is to provide a high speed filtering apparatus which can filter a great amount of raw water containing suspended substances (SS) at a high concentration at a high speed. Floating filter media2,which are composed of a foamed polymer having an apparent density of 0.1 to 0.4 g/cm3and a 50% compression hardness of not less than 0.1 MPa and have uneven shapes or cylindrical shapes with sizes of 4 to 10 mm, are charged into an up-flow type filtering tower1.The raw water containing SS at a high concentration is filtered by passing it through the filtering tower1at a linear water-passing speed of 100 to 1000 m/day. While the floating filter media2are not compacted, a high SS-capturing percentage can be obtained. Back washing can be also effected at a high linear washing speed of 1.2 to 4.0 m/min.
REFERENCES:
patent: 3831761 (1974-08-01), Chantereau
patent: 56-33013 (1981-04-01), None
patent: 7-75793 (1995-03-01), None
patent: 10-118679 (1998-05-01), None
patent: 10-118681 (1998-05-01), None
patent: 2000-107785 (2000-04-01), None
Miyata Atsushi
Nakayama Yoshihiko
NGK Insulators Ltd.
Parkhurst & Wendel L.L.P.
Pham Minh-Chau T.
LandOfFree
High rate filter and high rate filtration method using the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High rate filter and high rate filtration method using the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High rate filter and high rate filtration method using the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3435183