US 11,790,325 B2
Operation support device and operation support method
Natsumi Hatta, Tokyo (JP); Takumi Suda, Tokyo (JP); Eiji Imamura, Tokyo (JP); and Wataru Yoshida, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 16/973,774
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jun. 11, 2019, PCT No. PCT/JP2019/023122
§ 371(c)(1), (2) Date Dec. 10, 2020,
PCT Pub. No. WO2019/244718, PCT Pub. Date Dec. 26, 2019.
Claims priority of application No. 2018-115537 (JP), filed on Jun. 18, 2018.
Prior Publication US 2021/0248567 A1, Aug. 12, 2021
Int. Cl. G06Q 10/20 (2023.01); B01D 65/02 (2006.01); C02F 1/00 (2023.01); C02F 1/44 (2023.01); G05B 13/04 (2006.01); G06Q 10/0631 (2023.01); G06Q 10/0639 (2023.01); G06Q 10/30 (2023.01); G06Q 50/06 (2012.01)
CPC G06Q 10/20 (2013.01) [B01D 65/02 (2013.01); C02F 1/008 (2013.01); C02F 1/44 (2013.01); G05B 13/042 (2013.01); G06Q 10/06313 (2013.01); G06Q 10/06395 (2013.01); G06Q 10/30 (2013.01); C02F 2303/16 (2013.01); G06Q 50/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An operation support device comprising
a computer to:
store a cleaning efficiency model that expresses a deterioration of a separation membrane relative to a number of cleaning events, the separation membrane being configured to remove a removal target from sewage;
calculate, using the stored cleaning efficiency model, the deterioration of the separation member based on a number of cleaning events having been performed on the separation member;
calculate a cost of separation treatment based on the calculated deterioration of the separation membrane;
calculate an operation cost using the calculated cost of separation treatment, a cleaning cost for one cleaning event for the separation membrane, and a replacement cost for one replacement event for the separation membrane, the operation cost being a sum of the cost of separation treatment, a cleaning cost for the separation membrane, and a replacement cost for the separation membrane in an operation period of the separation membrane, the operation period of the separation membrane being a period longer than a replacement cycle for separation membranes;
determine a first reference value and a second reference value such that the calculated operation cost has a minimum value, the first reference value being used for determining whether to clean the separation membrane, the second reference value being used for determining whether to replace the separation membrane; and
calculate a cleaning schedule and a replacement schedule for the separation membrane using the first reference value and the second reference value determined, wherein
the computer calculates the operation cost using
water quality information on the sewage including a concentration of the removal target and a flow rate,
an accumulation model that expresses an amount of foulant accumulation on a membrane surface of the separation membrane,
the cleaning efficiency model,
a maintenance cost including the cleaning cost for one cleaning event and the replacement cost for one replacement event, and
a power consumption model that expresses a power consumption that depends on a blockage rate of the separation membrane in a water treatment facility that performs the separation treatment, and wherein
the computer
changes an operating condition of a facility or device for maintaining a state of the separation membrane such that the operating condition satisfies a maintenance condition that is a condition for maintenance of the separation membrane,
updates at least one of the accumulation model, the cleaning efficiency model, the maintenance cost, and the power consumption model based on the operating condition changed, and
recalculates the cleaning schedule and the replacement schedule.