Management device for water treatment facility, cleaning chemical solution order placement system for water treatment facility, chemical solution order placement method for water treatment facility, and chemical solution cleaning planning method for water treatment facility

A management device for a water treatment facility including a plurality of water treatment systems each using a membrane separation device, the management device comprising:

• a water treatment facility information reception unit configured to receive operation information and cleaning chemical solution stock information transmitted from a management terminal via a communication medium, the operation information being related to each of the plurality of water treatment systems each including the membrane separation device installed therein, the management terminal being configured to manage the operation information;
• a transmembrane pressure difference prediction unit configured to predict a general trend in a transmembrane pressure difference in each of the plurality of water treatment systems based on the operation information;
• a chemical solution cleaning planning unit configured to devise such a chemical solution cleaning plan that chemical solution cleaning is performed before a period when a value of the transmembrane pressure difference or a rate of change thereof predicted in each of the plurality of water treatment systems by the transmembrane pressure difference prediction unit reaches a specified value;
• an operating conditions adjustment information generation unit configured to generate operating conditions adjustment information based on which a specified-value reaching period of the transmembrane pressure difference in each of the plurality of water treatment systems is adjusted to be earlier or later than predicted in such a manner that there is no overlap between the specified-value reaching periods of the transmembrane pressure differences predicted in the plurality of water treatment systems by the transmembrane pressure difference prediction unit;
• and
• an operating conditions adjustment information transmission unit configured to transmit the operating conditions adjustment information to the management terminal,
• wherein the chemical solution cleaning planning unit devises the chemical solution cleaning plan by taking the operating conditions adjustment information into account.

A management device for a water treatment facility including a management terminal configured to manage operation information related to a plurality of water treatment systems each including a membrane separation device installed therein, the management device comprising:

• a water treatment facility information collecting unit configured to collect the operation information and cleaning chemical solution stock information related to each of the plurality of water treatment systems each including the membrane separation device installed therein;
• a transmembrane pressure difference prediction unit configured to predict a general trend in a transmembrane pressure difference in each of the plurality of water treatment systems based on the operation information;
• a chemical solution cleaning planning unit configured to devise such a chemical solution cleaning plan that chemical solution cleaning is performed before a period when a value of the transmembrane pressure difference or a rate of change thereof predicted in each of the plurality of water treatment systems by the transmembrane pressure difference prediction unit reaches a specified value;
• an operating conditions adjustment information generation unit configured to generate operating conditions adjustment information based on which a specified-value reaching period of the transmembrane pressure difference in each of the plurality of water treatment systems is adjusted to be earlier or later than predicted in such a manner that there is no overlap between the specified-value reaching periods of the transmembrane pressure differences predicted in the plurality of water treatment systems by the transmembrane pressure difference prediction unit;
• and
• an operating conditions adjustment information transmission unit configured to transmit the operating conditions adjustment information to the management terminal,
• wherein the chemical solution cleaning planning unit devises the chemical solution cleaning plan by taking the operating conditions adjustment information into account.

A cleaning chemical solution order placement system for a water treatment facility, the system comprising:

• a management device for a water treatment facility including a plurality of water treatment systems each using a membrane separation device, the management device including
• a water treatment facility information reception unit configured to receive operation information and cleaning chemical solution stock information transmitted from a management terminal via a communication medium, the operation information being related to each of the plurality of water treatment systems each including the membrane separation device installed therein, the management terminal being configured to manage the operation information,
• a transmembrane pressure difference prediction unit configured to predict a general trend in a transmembrane pressure difference in each of the plurality of water treatment systems based on the operation information,
• a chemical solution cleaning planning unit configured to devise such a chemical solution cleaning plan that chemical solution cleaning is performed before a period when a value of the transmembrane pressure difference or a rate of change thereof predicted in each of the plurality of water treatment systems by the transmembrane pressure difference prediction unit reaches a specified value by taking an operating conditions adjustment information,
• an operating conditions adjustment information generation unit configured to generate the operating conditions adjustment information based on which a specified-value reaching period of the transmembrane pressure difference in each of the plurality of water treatment systems is adjusted to be earlier or later than predicted in such a manner that there is no overlap between the specified-value reaching periods of the transmembrane pressure differences predicted in the plurality of water treatment systems by the transmembrane pressure difference prediction unit,
• an operating conditions adjustment information transmission unit configured to transmit the operating conditions adjustment information to the management terminal,
• a chemical solution order placement information generation unit configured to generate chemical solution order placement information based on the chemical solution cleaning plan and the cleaning chemical solution stock information, and
• a chemical solution order placement information transmission unit configured to transmit the chemical solution order placement information generated by the chemical solution order placement information generation unit to an external device including the management terminal;
• the management terminal configured to manage the operation information related to the plurality of water treatment systems each including the membrane separation device installed therein and to transmit the operation information and the cleaning chemical solution stock information to the management device;
• and
• a chemical solution supplier terminal configured to arrange a supply of a chemical solution based on the chemical solution order placement information transmitted from the management device,
• the management device, the management terminal, and the chemical solution supplier terminal being connected in a communicable manner.

A chemical solution order placement method for a water treatment facility, the method comprising:

• an operation information transmission step of transmitting operation information and cleaning chemical solution stock information from a management terminal to a management device via a communication medium, the operation information being related to a plurality of water treatment systems each including a membrane separation device installed therein, the management terminal being configured to manage the operation information;
• a transmembrane pressure difference prediction step, performed by a transmembrane pressure difference prediction unit provided in the management device, of predicting a general trend in a transmembrane pressure difference in each of the plurality of water treatment systems based on the operation information;
• a chemical solution cleaning planning step, performed by a chemical solution cleaning planning unit provided in the management device, of devising such a chemical solution cleaning plan that chemical solution cleaning is performed before a period when a value of the transmembrane pressure difference or a rate of change thereof predicted in each of the plurality of water treatment systems in the transmembrane pressure difference prediction step reaches a specified value;
• a chemical solution order placement information generation step, performed by a chemical solution order placement information generation unit provided in the management device, of generating chemical solution order placement information based on the chemical solution cleaning plan and the cleaning chemical solution stock information;
• an operating conditions adjustment information generation step of generating operating conditions adjustment information based on which a specified-value reaching period of the transmembrane pressure difference in each of the plurality of water treatment systems is adjusted to be earlier or later than predicted in such a manner that there is no overlap between the specified-value reaching periods of the transmembrane pressure differences predicted in the plurality of water treatment systems in the transmembrane pressure difference prediction step;
• and
• an operating conditions adjustment information transmission step of transmitting the operating conditions adjustment information generated in the operating conditions adjustment information generation step to the management terminal,
• wherein the chemical solution cleaning planning step devises the chemical solution cleaning plan by taking the operating conditions adjustment information generated in the operating conditions adjustment information generation step into account.

A chemical solution order placement method for a water treatment facility, the method comprising:

• an operation information collecting step of collecting, in a management device, operation information and cleaning chemical solution stock information related to a plurality of water treatment systems each including a membrane separation device installed therein;
• a transmembrane pressure difference prediction step, performed by a transmembrane pressure difference prediction unit provided in the management device, of predicting a general trend in a transmembrane pressure difference in each of the plurality of water treatment systems based on the operation information;
• a chemical solution cleaning planning step, performed by a chemical solution cleaning planning unit provided in the management device, of devising such a chemical solution cleaning plan that chemical solution cleaning is performed before a period when a value of the transmembrane pressure difference or a rate of change thereof predicted in each of the plurality of water treatment systems in the transmembrane pressure difference prediction step reaches a specified value;
• a chemical solution order placement information generation step, performed by a chemical solution order placement information generation unit provided in the management device, generating chemical solution order placement information based on the chemical solution cleaning plan and the cleaning chemical solution stock information;
• and
• an operating conditions adjustment information generation step of generating operating conditions adjustment information based on which a specified-value reaching period of the transmembrane pressure difference in each of the plurality of water treatment systems is adjusted to be earlier or later than predicted in such a manner that there is no overlap between the specified-value reaching periods of the transmembrane pressure differences predicted in the plurality of water treatment systems in the transmembrane pressure difference prediction step,
• wherein the chemical solution cleaning planning step devises the chemical solution cleaning plan by taking the operating conditions adjustment information generated in the operating conditions adjustment information generation step into account.

A chemical solution cleaning planning method for a water treatment facility, the method comprising:

• an operation information transmission step of transmitting operation information and cleaning chemical solution stock information from a management terminal to a management device via a communication medium, the operation information being related to a plurality of water treatment systems each including a membrane separation device installed therein, the management terminal being configured to manage the operation information;
• a transmembrane pressure difference prediction step, performed by a transmembrane pressure difference prediction unit provided in the management device, of predicting a general trend in a transmembrane pressure difference in each of the plurality of water treatment systems based on the operation information;
• a chemical solution cleaning planning step, performed by a chemical solution cleaning planning unit provided in the management device, of devising such a chemical solution cleaning plan that chemical solution cleaning is performed before a period when a value of the transmembrane pressure difference or a rate of change thereof predicted in each of the plurality of water treatment systems in the transmembrane pressure difference prediction step reaches a specified value;
• an operating conditions adjustment information generation step of generating operating conditions adjustment information based on which a specified-value reaching period of the transmembrane pressure difference in each of the plurality of water treatment systems is adjusted to be earlier or later than predicted in such a manner that there is no overlap between the specified-value reaching periods of the transmembrane pressure differences predicted in the plurality of water treatment systems in the transmembrane pressure difference prediction step;
• and
• an operating conditions adjustment information transmission step of transmitting the operating conditions adjustment information generated in the operating conditions adjustment information generation step to the management terminal,
• wherein the chemical solution cleaning planning step devises the chemical solution cleaning plan by taking the operating conditions adjustment information generated in the operating conditions adjustment information generation step into account.

A chemical solution cleaning planning method for a water treatment facility, the method comprising:

• an operation information collecting step of collecting, in a management device, operation information and cleaning chemical solution stock information related to a plurality of water treatment systems each including a membrane separation device installed therein;
• a transmembrane pressure difference prediction step, performed by a transmembrane pressure difference prediction unit provided in the management device, of predicting a general trend in a transmembrane pressure difference in each of the plurality of water treatment systems based on the operation information;
• a chemical solution cleaning planning step, performed by a chemical solution cleaning planning unit provided in the management device, of devising such a chemical solution cleaning plan that chemical solution cleaning is performed before a period when a value of the transmembrane pressure difference or a rate of change thereof predicted in each of the plurality of water treatment systems in the transmembrane pressure difference prediction step reaches a specified value;
• and
• an operating conditions adjustment information generation step of generating operating conditions adjustment information based on which a specified-value reaching period of the transmembrane pressure difference in each of the plurality of water treatment systems is adjusted to be earlier or later than predicted in such a manner that there is no overlap between the specified-value reaching periods of the transmembrane pressure differences predicted in the plurality of water treatment systems in the transmembrane pressure difference prediction step,
• wherein the chemical solution cleaning planning step devises the chemical solution cleaning plan by taking the operating conditions adjustment information generated in the operating conditions adjustment information generation step into account.