Apparatus for aerobic treatment of waste water
AssigneeAble Corporation
InventorToshiki Yoshimura
Life of this patent
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Abstract
An apparatus for aerobic biological treatment of waste water is described, in which a great number of carrier members having a large surface area to which microorganisms adhere are movably set in a cylindrical reactor within a given range of height, and the carrier is horizontally moved substantially continuously so that a part of the carrier is cleaned with cleaning air. The partial cleaning system eliminates the disadvantages associated with intermittent cleaning of the whole carrier.
Claims17
An apparatus for aerobic biological treatment comprising a reactor having a prescribed height, a waste water feeding means for feeding waste water to be treated to the reactor, a treated water discharging means for discharging treated water from the reactor, a fixed carrier holder for holding a carrier to which microorganisms easily adhere in such a manner that the carrier is arranged in a ring to occupy approximately the entire plane within a given range of height of the reactor except an inner peripheral portion and a central portion of the reactor, an air jetting means for jetting cleaning air substantially continuously from below the carrier during aerobic biological treatment operation of the apparatus for separating the microorganisms adhered to the carrier, said air jetting means linearly extending in the radial direction of said ring of the carrier and being movable substantially continuously at a slow speed in the peripheral direction of said ring of the carrier, and an air diffusing means for supplying air from the inner peripheral portion and/or the central portion of the reactor to maintain the waste water to be treated in an aerobic atmosphere.
An apparatus for aerobic biological treatment comprising:
- a reactor having a prescribed height;
- waste water feeding means connected to said reactor for feeding thereto waste water to be treated;
- discharging means connected to said reactor for discharging treated water from the reactor;
- a carrier holder inside said reactor for holding a carrier to which microorganisms easily adhere in such a manner that the carrier occupies approximately an entire plane within a given range of height of said reactor except an inner peripheral portion and a central portion of said reactor;
- air jetting means disposed at least partially inside said reactor below said carrier holder for jetting cleaning air substantially continuously during a treatment operation of the apparatus to separate microorganisms adhered to the carrier;
- means operatively connected to one of said carrier holder and said air jetting means for moving said one of said carrier holder and said air jetting means relative to the other of said carrier holder and said air jetting means substantially continuously at a slow speed along a given track of rotation, said air jetting means being fixed beneath the carrier at a position along said track of rotation and linearly extending in a radial direction nearly perpendicular to the track;
- and
- air diffusing means disposed at least partially inside said reactor for supplying air to maintain the waste water to be treated in an aerobic atmosphere, said air diffusing means being provided at the inner peripheral portion and/or the central portion of the reactor.
Dependencies are inferred from the claim text.