公开(公告)号：US20240294411A1

公开(公告)日：2024-09-05

申请号：US18574522

申请日：2022-06-22

Applicant: ORGANO CORPORATION

Inventor： Masaki MIYAKE ,  Yoshiaki HASEBE ,  Hizuru WAKAYAMA ,  Kazuki FURUSAWA

IPC: C02F3/12 ,  C02F101/30

CPC classification number: C02F3/12 ,  C02F2101/30 ,  C02F2203/006

Abstract: The present disclosure is an aerobic granule forming method using a semibatch-type reaction tank (10) for forming aerobic granules, the aerobic granule forming method being characterized in that: the organic substance includes an easily decomposable organic substance and a slowly decomposable organic substance; and the time of the biological treatment process is adjusted so that the value obtained by multiplying the ratio of the MLSS concentration in the semibatch-type reaction tank (10) to the BOD loading volume of the easily decomposable organic substance in the semibatch-type reaction tank (10) by [time of the operating cycle/time of the biological treatment process] is in the range of 0.05-0.25 kg BOD/kg MLSS/day.