SEWAGE/WASTEWATER TREATMENT SYSTEM USING GRANULAR ACTIVATED SLUDGE AND MEMBRANE BIO-REACTOR AND SEWAGE/WASTEWATER TREATMENT METHOD USING THE SAME
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Abstract
The present disclosure relates to a sewage/wastewater treatment system using granular activated sludge and a membrane bio-reactor and a sewage/wastewater treatment method using the same that are configured to effectively remove pollutants contained in raw water through a granulation tank in which the granular activated sludge is contained and to allow the raw water to be filtered through movable membranes located on the upper portion of the granulation tank. The system includes: an indirect aeration tank adapted to supply air thereto to allow dissolved oxygen contained in raw water to reach a saturation concentration; a granulation tank adapted to allow floating microorganisms contained in the treated water passing through the indirect aeration tank to be granulated and having a sludge blanket formed thereon; and movable membranes located on the upper portion of the granulation tank in such a manner as to be movable in the granulation tank.
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Citations
39 Claims
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1-20. -20. (canceled)
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21. A raw water treatment method using a granular activated sludge blanket and submerged movable membranes in a granulation tank, the method comprising:
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treating raw water by aerating the raw water so that dissolved oxygen contained in the raw water is allowed to reach a saturation concentration; forming the granular activated sludge blanket in a lower portion of the granulation tank by allowing floating microorganisms contained in the treated raw water to be granulated; filtering supernatant liquid by moving the submerged movable membranes through an upper portion of the granulation tank to discharge the supernatant liquid; and agitating the granular activated sludge blanket by driving the submerged movable membranes in the granulation tank. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A raw water treatment method using a granular activated sludge blanket and submerged movable membranes in a granulation tank, the method comprising:
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treating raw water by aerating the raw water so that dissolved oxygen contained in the raw water is allowed to reach a saturation concentration; forming the granular activated sludge blanket in a lower portion of the granulation tank by allowing floating microorganisms contained in the treated raw water to be granulated; filtering supernatant liquid by moving the submerged movable membranes through an upper portion of the granulation tank to discharge the supernatant liquid; and circulating treated raw water having passed through the granular activated sludge blanket into the upper portion of the granulation tank, the circulating treated raw water passing from the upper portion of the granulation tank directly to the lower portion of the granulation tank. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification