公开(公告)号：US20190023594A1

公开(公告)日：2019-01-24

申请号：US16069083

申请日：2016-12-28

Applicant: ORGANO CORPORATION

Inventor： Hatsuhiro MATSUDA ,  Masaaki TOMITA ,  Aki HAMAMOTO ,  Masaki MIYAKE ,  Yoshiaki HASEBE ,  Masahiro EGUCHI

IPC: C02F3/12

CPC classification number: C02F3/1263 ,  C02F3/00 ,  C02F3/10 ,  C02F3/12 ,  C02F2203/004 ,  C02F2209/08 ,  C02F2209/14 ,  Y02W10/15

Abstract: A granule-forming method using a semi-batch reaction tank, wherein: operation cycles of a first operation cycle for performing a biological treatment step at a first sludge load and after the first operation cycle, a second operation cycle for performing the biological treatment step at a second sludge load are performed repeatedly; the first sludge load is set so that the soluble BOD concentration in the semi-batch reaction tank at the time of completion of the biological treatment step of the first operation cycle does not decrease to a threshold value or less; and the second sludge load is set so that the soluble BOD concentration in the semi-batch reaction tank at the time of completion of the biological treatment step of the second operation cycle is at or below the threshold value.

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.

公开(公告)号：US20210061691A1

公开(公告)日：2021-03-04

申请号：US16965215

申请日：2019-02-07

Applicant: ORGANO CORPORATION

Inventor： Masaki MIYAKE ,  Yoshiaki HASEBE

IPC: C02F3/30 ,  C02F3/00

Abstract: Provided are a water treatment method and a water treatment device that can be introduced in a standard tank with an effective water depth of 5 m or less during treatment of water to be treated that contains organic matter and a nitrogen component, and that allow improvement in efficiency of removing nitrogen from the water to be treated and suppressing energy consumption for aeration while maintaining a high MLSS. The water treatment method is for treating water to be treated that contains organic matter and a nitrogen component, and includes, in a biological treatment device (10) comprising at least an aerobic tank (40): a biological treatment step for biologically treating inflowing water to be treated aerobically by using sludge that contains granules; a solid-liquid separation step for separating die biological treatment solution in the aerobic tank (40) into treated water and concentrated sludge using a solid-liquid separation device (12); and a sludge return step for returning the concentrated sludge obtained in the solid-liquid separation step to a stage before the biological treatment device (10). The concentration of ammonium nitrogen remaining due to the nitrification reaction in the aerobic tank (40) is measured with an ammonium nitrogen concentration measurement device (16), and the amount of gas containing oxygen dispersed to the aerobic tank (40) is controlled with a blower (18) so that the measured ammonium nitrogen concentration is within a prescribed range.

公开(公告)号：US20210261450A1

公开(公告)日：2021-08-26

申请号：US17253355

申请日：2019-06-20

Applicant: ORGANO CORPORATION

Inventor： Hironori YUI ,  Taichi YAMAMOTO ,  Masaki MIYAKE ,  Yoshiaki HASEBE

IPC: C02F3/34 ,  C02F3/28

Abstract: Provided are: a water treatment method that includes at least a denitrification step for denitrifying water to be treated with a denitrifying bacterium in the presence of a hydrogen donor, wherein the denitrification activity of the denitrifying bacterium can be maintained at a high level and thus the treatment speed can be increased; and a water treatment apparatus. The water treatment method includes at least a denitrification step for passing water to be treated through a biological treatment tank and denitrifying the same with a heterotrophic denitrifying bacterium in the presence of a hydrogen donor, wherein: molybdenum is added to the water to be treated to give a concentration of 0.01-1.0 mgMo/gN; a carrier is added to the biological treatment tank; and the nitrogen load to the carrier is controlled to 1.6 kgN/(m3-carrier·d) or greater.

公开(公告)号：US20180339925A1

公开(公告)日：2018-11-29

申请号：US15559635

申请日：2016-03-03

Applicant: ORGANO CORPORATION

Inventor： Masaki MIYAKE ,  Yoshiaki HASEBE ,  Masahiro EGUCHI

IPC: C02F3/02 ,  C12N1/20 ,  C02F3/00

CPC classification number: C02F3/02 ,  C02F3/006 ,  C02F3/1263 ,  C02F3/30 ,  C02F2003/001 ,  C02F2209/08 ,  C02F2209/10 ,  C12N1/20 ,  Y02W10/15

Abstract: Provided is a method for forming aerobic granules in which a semibatch reactor for forming granules is used, the method involving repeatedly carrying out an inflowing step for causing organic-matter-containing wastewater that includes organic matter to flow in, a biological treatment step for biologically treating substances to be treated in the organic-matter-containing drainage water by using microbial sludge, a settling step for allowing the microbial sludge to settle out, and a discharge step for discharging biologically treated water which has been biologically treated, wherein the reaction time is adjusted such that the value obtained by dividing the total cycle time by the reaction time and multiplying the resulting quotient by the ratio of the MLSS concentration to the BOD load charged into the semibatch reactor is within a range of 0.05 to 0.25 kgBOD/kgMLSS/d, and the sludge is drawn such that the sludge retention period is 5 to 25 days.

公开(公告)号：US20240010531A1

公开(公告)日：2024-01-11

申请号：US18037886

申请日：2021-09-27

Applicant: ORGANO CORPORATION

Inventor： Naonori MOMOTANI ,  Kazushige TAKAHASHI ,  Yoshiaki HASEBE

IPC: C02F1/76

CPC classification number: C02F1/76 ,  C02F2101/38

Abstract: A urea treatment method in which hypobromite ions are generated by adding a chlorine-based oxidizer and a bromide salt to to-be-treated water containing urea so as to break down the urea in the to-be-treated water and obtain treated water, the method including: a) determining the free residual bromine concentration and the free residual chlorine concentration in the treated water; and b) controlling the added amount of the chlorine-based oxidizer and the bromide salt on the basis of the free residual bromine concentration and the free residual chlorine concentration. The device includes a bromide salt adding means, a chlorine-based oxidizer adding means, a urea decomposition tank, a residual chlorine meter, and a control device for controlling the added amount of the chlorine-based oxidizer by the chlorine-based oxidizer adding means on the basis of the method.

公开(公告)号：US20210284556A1

公开(公告)日：2021-09-16

申请号：US17263644

申请日：2019-07-24

Applicant: ORGANO CORPORATION

Inventor： Masaki MIYAKE ,  Yoshiaki HASEBE ,  Shohei YAMAMOTO ,  Hizuru WAKAYAMA

IPC: C02F3/12 ,  C02F3/28

Abstract: A water treatment method that uses a reaction tank and involves repeatedly performing an operation cycle including: an inflow step for causing an inflow of waste water; a biological treatment step for subjecting the waste water to biological treatment using biological sludge; a sedimentation step for causing the biological sludge to settle; and a drainage step for draining biologically-treated water that has undergone the aforementioned biological treatment. The reaction tank is provided with an inflow port that is disposed at a position lower than an interface position of a biological sludge bed formed at the bottom of the reaction tank in the sedimentation step, and an inflow pipe that extends upward in the vertical direction from the inflow port. In the inflow step, the waste water is caused to gravitationally flow down in the inflow pipe so as to be fed into the biological sludge bed from the inflow port.

公开(公告)号：US20210261449A1

公开(公告)日：2021-08-26

申请号：US17253512

申请日：2019-06-20

Applicant: ORGANO CORPORATION

Inventor： Masaki MIYAKE ,  Yoshiaki HASEBE

IPC: C02F3/30

Abstract: Provided are a water treatment method and a water treatment device wherein in a biological treatment of ammonium nitrogen-containing water to be treated, the water to be treated can be treated stably at a high treatment speed even when the nitrogen concentration of the water to be treated is high. This water treatment device biologically treats ammonium nitrogen-containing water to be treated. The water treatment device (water treatment method) is provided with: a nitrification device (nitrification step) for oxidizing ammonium nitrogen to nitrite or nitrate nitrogen using nitrifying bacteria including autotrophic ammonia-oxidizing bacteria and nitrite-oxidizing bacteria contained in microbial activated sludge; and a nitrification rate control means which maintains a molybdenum compound in the nitrification device in such a manner as to control the molybdenum concentration of the water to be treated to 0.025 mg Mo/gN or more, and controls the nitrification rate for the sludge to 0.11 [kgN/(kgVSS·day)].