Title:
有機性廃水の生物処理装置及び生物処理方法
Document Type and Number:
Japanese Patent JP7337088
Kind Code:
B2
Abstract:
Provided are an apparatus and a method for biological treatment of an organic wastewater where it is possible to efficiently remove organic matter under high load while reducing the amount of air used for aerobic biological treatment and substantially decreasing the amount of sludge generated. The apparatus is provided with: a first biological treatment tank which has a fixed-type immobilized biocarrier and an aeration means; a second biological treatment tank to which a treated liquid from the first tank is introduced so as to perform treatment using suspended microorganisms, and which has an aeration means; and a sedimentation tank in which solid-liquid from the second tank is separated said liquid into settled sludge and treated water, wherein the apparatus has an influent line through which an organic wastewater is introduced to the first tank and the second tank, and a return line through which part of settled sludge discharged from the tank is returned to the tank.
Inventors:
Toshihiro Tanaka
Kiyomi Kabasawa
Taiji Sato
Kiyomi Kabasawa
Taiji Sato
Application Number:
JP2020553282A
Publication Date:
September 01, 2023
Filing Date:
October 17, 2019
Export Citation:
Assignee:
EBARA CORPORATION
International Classes:
C02F3/06; C02F3/12
Domestic Patent References:
| JP2016150332A | ||||
| JP2005211788A | ||||
| JP55149697A |
Attorney, Agent or Firm:
Tamura
Junko Sugimura
Masao Fujimatsu
Junko Sugimura
Masao Fujimatsu
Previous Patent: expandable implant device
Next Patent: LOW-NOISE OPERATION OF MACHINE SUPPLIED WITH POWER VIA PULSEINVERTER
Next Patent: LOW-NOISE OPERATION OF MACHINE SUPPLIED WITH POWER VIA PULSEINVERTER