Seawater desalination plant system

摘要

According to one embodiment, a seawater desalination plant system includes a plant unit that produces fresh water from seawater. The seawater desalination plant system predicts quality of seawater for each predetermined time (for example, 1 hour) for a certain definite period (for example, 24 hours) based on a past actual measurement value of quality of seawater; creates a plurality of proposed plans of fresh water production quantity during the definite period in each of which fresh water production quantity required for the definite period is allotted to the each predetermined time; calculates, with respect to the proposed plans, electric power consumption rates for desalination using the predicted quality of seawater, the fresh water production quantity and a previously obtained recovery rate; and obtains an optimum plan of fresh water production quantity with a minimum electric power consumption rate from the proposed plans.

主权项

1. A seawater desalination plant system which has a plant unit to produce fresh water from seawater and supplies the produced fresh water to customers through a distribution reservoir, the seawater desalination plant system comprising:
a seawater quality prediction means which predicts quality of the seawater for each predetermined time during a certain definite period based on a past actual measurement value of quality of seawater; an optimum plan calculation means which creates a plurality of proposed plans of fresh water production quantity during the definite period in which fresh water production quantity required for the definite period is allotted to the each predetermined time, with respect to each of these plurality of proposed plans of fresh water production quantity, calculates an electric power consumption rate for producing fresh water for the each predetermined time, using the seawater quality predicted for the each predetermined time, the fresh water production quantity allotted to the each predetermined time, and a previously obtained recovery rate, and obtains an optimum fresh water production quantity plan from the plurality of proposed plans of fresh water production quantity based on the calculated electric power consumption rate; and a display means which displays the content of the optimum fresh water production quantity plan obtained by the optimum plan calculation means.