LIQUID WASTE TREATMENT DEVICE AND LIQUID WASTE TREATMENT METHOD
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United States of America Patent
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Issued Date -
Nov 21, 2013
app pub date -
Nov 25, 2011
filing date -
Jan 24, 2011
priority date (Note) -
Abandoned
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Abstract
Waste water treatment device has: a reactor tank that is supplied with water to be treated from a bottom of the reactor tank and discharges the water to be treated as treated water from an upper portion of the reactor tank after the water to be treated is brought into contact with microorganism; a pH control tank that controls a part of the treated water discharged from the reactor tank so that pH of the part of the treated water is adjusted to a pH range in which reaction activity of the microorganism is high; and a line that injects the treated water pH-adjusted in the pH control tank to a position in a sedimentary layer of the microorganism which sediments in the reactor tank. The position is separate from a supply portion of the water to be treated in a flow direction of the water to be treated.
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