Patent ID: 11964882
Assignee: HYORIM CO., LTD.
Field: Measurement (Instruments)
Classification: CPC C  G  Y | IPC C  G

Claim 13:
14. An IoT-based system for measurement of contamination distribution of contaminated groundwater through real-time monitoring of a contamination degree of a contaminated groundwater well for prediction of a purification period based on a measurement result, the IoT-based system comprising:
a sensor unit mounted in each of a plurality of wells excavated to purify contaminated groundwater, the sensor unit comprising a contamination degree sensor for measuring a degree of contamination by contaminants, a pH sensor, a temperature sensor, a water level sensor, a pumping amount sensor, and a rainfall sensor;
a server unit configured to collect sensor data transmitted from the sensor unit and to classify the sensor data based on a data type; and
a web dashboard unit configured to display the sensor data transmitted from the server unit to enable a user to verify or control desired sensor data on a well basis and on a data-type basis in real time, the web dashboard unit comprising a purification-area-based status screen, a main screen, a contamination degree screen, a pumping amount screen, a groundwater level screen, an indirect purification factor screen, a contaminated-area-sensor-data-based movement distribution history screen, a distribution comparison screen, a purification control screen comprising a sensor-data-type selection window enabling selection of a type of sensor data, the sensor-data-type selection window being displayed in a contamination map screen, in which a range of a contaminated area, a depth of contamination, a value of each type of sensor data on a well basis, a two-dimensional or three-dimensional potentiometric surface map based on the value of each type of sensor data, a location of a purification device, locations of the wells, and connection pipes are displayed on a contaminated area map, and a purification period prediction screen displaying a change in the value of each type of sensor data in a contaminated area,
wherein, when a purification device in the purification control screen is clicked and selected, a purification device operation screen is displayed, and
wherein the purification device operation screen comprises:
an entire construction diagram of a purification device in each purification zone;
a flow indicator indicating a flow of contaminated groundwater through pipes of the purification device, reinjection into the wells, discharge into rainwater, and discharge into sewage; and
an operation data table indicating a degree of contamination by the contaminants in each well, an amount pumped from each well, a water level in each well, a water level in the purification device, on/off of a pump in each well, on/off of a pump of the purification device, on/off of a pump supplying a chemical, and information about whether the purification device is operating normally,
wherein the purification device operation screen displays a chart indicating a name of a chemical that is injected, an amount of the chemical that is injected, and a numerical change in the amount of the chemical that is injected,
wherein on/off of the pump in each well, on/off of the pump of the purification device, and on/off of the pump supplying a chemical are respectively controlled through the purification device operation screen,
wherein, when an inlet tank and an outlet tank of the purification device displayed in the purification device operation screen are respectively clicked and selected, a graph indicating a numerical change in a degree of contamination by the contaminants is displayed, wherein the purification period prediction screen is configured to output a predicted value of a degree of contamination after a predetermined period and a predicted value of a purification period, and wherein the predicted value of the degree of contamination after a predetermined period and the predicted value of the purification period are calculated in real-time using a program of a computer executed based on a purification period prediction algorithm comprising an exponential function below:

C=C0e−kt 

where C indicates a degree of contamination (mg/L) of groundwater after a predetermined period, C0 indicates an initial degree of contamination (mg/L) of groundwater, k indicates a reduction coefficient (day−1), and t indicates a time (day).