Abstract: Provided is a water treatment device configured to perform a deionization treatment for the water to be treated, and the water treatment device includes a pressing member, a treatment container configured to store the water to be treated, a first electrode and a second electrode accommodated in the treatment container, a separator arranged between the first electrode and the second electrode, and a pair of collectors, which are accommodated in the treatment container, and are configured to apply a voltage to the first electrode and the second electrode. The pressing member is configured to press the first electrode and the second electrode in the treatment container.

Abstract: A water treatment plant includes a central monitoring device, a control device, a control device, and a computation unit, and causes a water treatment apparatus and a water treatment apparatus to execute water treatment. The central monitoring device monitors the water treatment apparatus and the water treatment apparatus. The control device performs a first control for the water treatment apparatus. The control device performs a second control for the water treatment apparatus. The computation unit is located outside the central monitoring device and performs a first computation related to the first control using a first calculation model generated by a first machine learning.

Abstract: A water treatment membrane washing apparatus includes two ozone dissolving tanks for storing filtrate generated by filtering raw water through a water treatment membrane and gas aspirators provided for the respective ozone dissolving tanks, for mixing the filtrate with ozone gas supplied from an ozone supply unit to generate ozone gas containing filtrate, and is configured such that waste ozone gas generated in one of the ozone dissolving tanks is aspirated by the gas aspirator provided for the other ozone dissolving tank. After the filtrate from the raw water is pretreated by being mixed with the waste ozone gas in the aspirator, the pretreated filtrate is mixed with the ozone gas in the other ozone dissolving tank until it reaches a predetermined concentration. The ozone gas containing filtrate is supplied from the secondary side of the water treatment membrane to the primary side thereof to wash the eater treatment membrane.

Abstract: A water treatment control system includes an aerobic tank in which aerobic treatment is carried out, an aerobic tank aeration device that aerates to-be-treated water in the aerobic tank, a membrane filtration tank including a separation membrane that filters the to-be-treated water treated in the aerobic tank, a membrane filtration tank measurement instrument that measures the ammonia concentration of the to-be-treated water in the membrane filtration tank, as a membrane filtration tank ammonia concentration measurement value, and an aerobic tank aeration air volume calculation device that sets the aerobic tank aeration air volume of the aerobic tank aeration device on the basis of the membrane filtration tank ammonia concentration measurement value.

Abstract: A filtration membrane treatment device which performs ozone treatment on a filtration membrane, the filtration membrane treatment device including: a first supply portion which supplies an ozone-containing fluid to the filtration membrane; a measurement portion which measures a measurement value based on a pressure to the filtration membrane; and a control portion which adjusts, on the basis of a change in the measurement value measured by the measurement portion, a supply amount of the ozone-containing fluid to be supplied by the first supply portion.

Abstract: A water treatment plant that performs water treatment using a water treatment facility includes: a sensor that repeatedly detects a water treatment environment of the water treatment facility to output time-series detection data; and a processor. The processor causes an arithmetic circuitry to execute a computation related to control of the water treatment facility using the time-series detection data as input data for a calculation model generated by machine learning.

Abstract: A water treatment device includes: an oxidationor for causing pretreatment gas to be in contact with filtered water; a water quality measurement device for performing water quality measurement for the filtered water; and a controller which controls the oxidationor, determines oxidation progress of oxidizable substances in the filtered water on the basis of a first change amount obtained from change over time in a measurement value obtained through water quality measurement for the filtered water by the water quality measurement device, and determines to continue or stop supply of the pretreatment gas to the filtered water.

Abstract: A water treatment plant includes a central monitoring device, a control device, a control device, and a computation unit, and causes a water treatment apparatus and a water treatment apparatus to execute water treatment. The central monitoring device monitors the water treatment apparatus and the water treatment apparatus. The control device performs a first control for the water treatment apparatus. The control device performs a second control for the water treatment apparatus. The computation unit is located outside the central monitoring device and performs a first computation related to the first control using a first calculation model generated by a first machine learning.

Abstract: A water treatment plant which performs water treatment using a water treatment device includes an imaging device, a processing device, and a control device. The imaging device images a water treatment environment of the water treatment device and outputs image data obtained by imaging. The processing device causes an arithmetic device which performs an arithmetic operation using one or more calculation models generated by machine learning to execute the arithmetic operation employing the image data output from the imaging device as input data of the one or more calculation models. The control device controls the water treatment device on the basis of output information output from the arithmetic device by executing the arithmetic operation.

Abstract: A water treatment apparatus includes: a first granular electrode member and a second granular electrode member stored in a water treatment unit and provided so as to be separated from each other; a power supply unit which applies voltage between the first granular electrode member and the second granular electrode member so that ions contained in treatment target water supplied from one side of the water treatment unit are adsorbed to the first granular electrode member and the second granular electrode member; and a washing water supply pump which causes washing water to flow from the other side of the water treatment unit to the one side of the water treatment unit, thereby washing the first granular electrode member and the second granular electrode member, wherein the first granular electrode member and the second granular electrode member each include a plurality of flowable granular electrode members.

Abstract: A water treatment device in which a treatment target water introduction portion is provided in an upper portion of a receptacle, and the water treatment device has a space in which conductive porous members are not disposed between the conductive porous members and the treatment target water introduction portion in the receptacle. When a backwashing fluid is introduced from a lower portion of the receptacle in a desorption, the conductive porous members flow and are agitated owing to the backwashing fluid, because of which a desorption of ions adsorbed to the conductive porous members is promoted. Grains of the agitated conductive porous members collide with other grains of the conductive porous members or with electrodes or a separator, whereby scale and a biofilm appearing on surfaces of the grains of the conductive porous members, the electrodes, or the separator can be removed, and desalination efficiency can be maintained.

Abstract: A water treatment membrane washing apparatus includes two ozone dissolving tanks for storing filtrate generated by filtering raw water through a water treatment membrane and gas aspirators provided for the respective ozone dissolving tanks, for mixing the filtrate with ozone gas supplied from an ozone supply unit to generate ozone gas containing filtrate, and is configured such that waste ozone gas generated in one of the ozone dissolving tanks is aspirated by the gas aspirator provided for the other ozone dissolving tank. After the filtrate from the raw water is pretreated by being mixed with the waste ozone gas in the aspirator, the pretreated filtrate is mixed with the ozone gas in the other ozone dissolving tank until it reaches a predetermined concentration. The ozone gas containing filtrate is supplied from the secondary side of the water treatment membrane to the primary side thereof to wash the eater treatment membrane.

Abstract: A water treatment control system includes an aerobic tank in which aerobic treatment is carried out, an aerobic tank aeration device that aerates to-be-treated water in the aerobic tank, a membrane filtration tank including a separation membrane that filters the to-be-treated water treated in the aerobic tank, a membrane filtration tank measurement instrument that measures the ammonia concentration of the to-be-treated water in the membrane filtration tank, as a membrane filtration tank ammonia concentration measurement value, and an aerobic tank aeration air volume calculation device that sets the aerobic tank aeration air volume of the aerobic tank aeration device on the basis of the membrane filtration tank ammonia concentration measurement value.

Abstract: A method for cleaning a filter membrane in which at least 2 types of cleaning water containing oxidizing agents are prepared, and the filter membrane is cleaned using the cleaning water in an ascending order of the oxidizabilities of the oxidizing agents. Moreover, an apparatus for cleaning a filter membrane of the present invention comprises a means for cleaning the filter membrane using at least 2 types of cleaning water containing oxidizing agents, and the filter membrane is cleaned using the cleaning water in an ascending order of the oxidizabilities of the oxidizing agents. The method and the apparatus for cleaning a filter membrane can efficiently remove polluting substances adhered to a filter membrane while reducing the amounts of oxidizing agents and water to be used, and can maintain the filtration performance for a long period of time.

Abstract: Provided is a water treatment device configured to perform a deionization treatment for the water to be treated, and the water treatment device includes a pressing member, a treatment container configured to store the water to be treated, a first electrode and a second electrode accommodated in the treatment container, a separator arranged between the first electrode and the second electrode, and a pair of collectors, which are accommodated in the treatment container, and are configured to apply a voltage to the first electrode and the second electrode. The pressing member is configured to press the first electrode and the second electrode in the treatment container.

Abstract: This membrane separation device includes: an organic substance concentration measurement means which measures the organic substance concentration in the treatment target water; a pressure measurement unit which measures a transmembrane pressure of the separation membrane; transmembrane pressure increase speed comparing means which compares a transmembrane pressure increase speed selected on the basis of the value of the organic substance concentration measured by the organic substance concentration measurement means, with a transmembrane pressure increase speed calculated from the transmembrane pressure measured by the pressure measurement unit; and a control unit which controls the membrane surface aeration flow amount of the membrane surface aeration device, wherein the control unit changes the membrane surface aeration flow amount on the basis of the difference between the transmembrane pressure increase speeds, obtained by the transmembrane pressure increase speed comparing means.

Abstract: A water treatment apparatus includes: a first granular electrode member and a second granular electrode member stored in a water treatment unit and provided so as to be separated from each other; a power supply unit which applies voltage between the first granular electrode member and the second granular electrode member so that ions contained in treatment target water supplied from one side of the water treatment unit are adsorbed to the first granular electrode member and the second granular electrode member; and a washing water supply pump which causes washing water to flow from the other side of the water treatment unit to the one side of the water treatment unit, thereby washing the first granular electrode member and the second granular electrode member, wherein the first granular electrode member and the second granular electrode member each include a plurality of flowable granular electrode members.

Abstract: A water treatment apparatus includes: a first granular electrode member and a second granular electrode member stored in a water treatment unit and provided so as to be separated from each other; a power supply unit which applies voltage between the first granular electrode member and the second granular electrode member so that ions contained in treatment target water supplied from one side of the water treatment unit are adsorbed to the first granular electrode member and the second granular electrode member; and a washing water supply pump which causes washing water to flow from the other side of the water treatment unit to the one side of the water treatment unit, thereby washing the first granular electrode member and the second granular electrode member, wherein the first granular electrode member and the second granular electrode member each include a plurality of flowable granular electrode members.

Abstract: This invention is a foreign substance removal apparatus that removes foreign substances in such a medium as a refrigerant that flows through a circulation path, the foreign substance removal apparatus including: a foreign substance sedimentation unit which is connected to the circulation path and is configured to settle the foreign substances; a foreign substance separation unit configured to separate, from the foreign substance sedimentation unit, the foreign substances settled in the foreign substance sedimentation unit; first pressure open/close means which is disposed on a bottom of the foreign substance sedimentation unit, and is configured to open or close in accordance with pressure inside the circulation path; and a foreign substance discharge pipe which connects the bottom of the foreign substance sedimentation unit and the foreign substance separation unit via the first pressure open/close means.

Abstract: An ozone treatment apparatus includes: an ozone gas generator that generates ozone gas from raw material gas; a sludge pump that pressurizes sludge to be treated; an ejector in which the sludge to be treated, which is pressurized by the sludge pump, is injected; and a valve provided between the ozone gas generator and the ejector. The valve becomes in an open state when pressure on the former stage side is larger than pressure on the latter stage side by a specified value or higher. An ozone gas storage facility may be provided between the ozone gas generator and the valve. A sludge mixing tank installed in the latter stage of the ejector and a sludge circulation pump that connects an upper part of the sludge mixing tank and the latter stage of the sludge pump may be provided.