公开(公告)号：US20210087091A1

公开(公告)日：2021-03-25

申请号：US16772266

申请日：2018-12-13

Applicant: TOYO UNIVERSITY ,  TOYO TANSO CO., LTD.

Inventor： Tatsuo SUMINO ,  Satoshi SAKUMA ,  Tetsuro TOJO ,  Ai ISHIKAWA ,  Tomoya NAKAZONO ,  Masatoshi TAKESHITA

IPC: C02F3/34 ,  C02F3/30

Abstract: [Problem] A carrier for retaining anammox bacteria, an anammox bacteria-adhered particle, and a wastewater treatment apparatus are provided that can remarkably reduce the start-up period for obtaining a nitrogen removal speed of 1 kg-N/m3/day.
[Solution] A carrier for retaining anammox bacteria includes carbon particles. The carbon particles are desirably graphite particles, particularly isotropic graphite particles. The carbon particles desirably have a zeta potential of −35 mV to 0 mV and an average particle size of 2 μm to 1000 μm.

公开(公告)号：US20210171373A1

公开(公告)日：2021-06-10

申请号：US16772050

申请日：2018-12-13

Applicant: TOYO TANSO CO., LTD.

Inventor： Masashi ZENKI ,  Tetsuro TOJO ,  Masatoshi TAKESHITA ,  Tomoya NAKAZONO ,  Ai ISHIKAWA

IPC: C02F3/10 ,  C12N11/02 ,  C12N1/20

Abstract: [Problem] A microorganism immobilized carrier is provided that is easy for microorganisms to adhere to, and is able to reduce the manufacturing cost of the microorganism immobilized carrier and the running cost of an apparatus that uses the microorganism immobilized carrier.
[Solution] A microorganism immobilized carrier is characterized by including a carbon component and a resin, having a zeta potential of from −25 mV to 0 mV, and containing microorganisms adhered to a surface thereof and/or an interior thereof. The microorganisms are preferably nitrifying bacteria. The carbon component preferably has a particle size of from 1 μm to 1000 μm.