US 12,344,540 B2
Waste separating system, activated sludge treatment system, waste separating method, and activated sludge treatment method
Soichiro Yatsugi, Amagasaki (JP); Yoshio Kitagawa, Amagasaki (JP); and Shinya Nagae, Tokyo (JP)
Assigned to Kubota Corporation, Osaka (JP)
Appl. No. 18/023,516
Filed by Kubota Corporation, Osaka (JP)
PCT Filed Aug. 27, 2021, PCT No. PCT/JP2021/031493
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/045288, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. 2020-144984 (JP), filed on Aug. 28, 2020.
Prior Publication US 2024/0025779 A1, Jan. 25, 2024
Int. Cl. C02F 3/12 (2023.01); C02F 11/02 (2006.01)
CPC C02F 3/12 (2013.01) [C02F 11/02 (2013.01); C02F 2303/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A waste separating system, comprising:
a first waste separating apparatus and a second waste separating apparatus each configured to separate waste from treatment target water,
the first waste separating apparatus comprising a first filter with a first opening size,
the second waster separating apparatus comprising a second filter with a second opening size larger than the first opening size and disposed downstream of the first waste separating apparatus,
the waste separating system further comprising:
an overflow water flow path configured to guide, to a position upstream of the second waste separating apparatus, a portion of the treatment target water which portion has flown out of the first waste separating apparatus.