摘要:
PROBLEM TO BE SOLVED: To provide a magnetic composite particle for decontamination suitable for a system and a method for decontaminating radioactive materials which are capable of decontaminating radioactive materials with high efficient, high in environment resistance, and suitable for mass processing.SOLUTION: A magnetic composite particle for decontamination comprises a multilayer structure of a magnetic nanoparticle 10 in a core part, a capturing compound 18 for capturing radioactive materials in a liquid on a surface layer, and a coating layer 15 which directly covers the magnetic nanoparticle 10 and is substantially formed between the magnetic nanoparticle 10 and the capturing compound 18.
摘要:
According to one embodiment, a seawater desalination apparatus includes a pressure sensor configured to measure a pressure of seawater which is supplied to a reverse osmosis membrane that is configured to separate seawater into fresh water and condensed seawater and to discharge the fresh water and the condensed seawater, a sensor configured to measure a flow amount of the fresh water which is discharged from the reverse osmosis membrane, a sensor configured to measure a flow amount of the condensed seawater discharged from the reverse osmosis membrane or a flow amount of the seawater discharged from a booster pump, a sensor configured to measure a flow amount of the seawater which is supplied to a power recovery device, and a controller configured to execute control based on values measured by the sensors.
摘要:
PROBLEM TO BE SOLVED: To provide a sea water desalination system which can reduce energy for producing plain water and which can secure the quality of water in plain water to be produced.SOLUTION: The sea water desalination system 1 includes a sewage type reverse osmosis membrane treatment means 10 to produce sewage type permeated water W11 and sewage type concentrated water W12 by conducting the membrane separation treatment of sewage W10, and a sea water type reverse osmosis membrane treatment means 20 which produces sea water type permeated water W21 and sea water type concentrated water W22 by conducting the membrane separation treatment of a mixture of the sewage type concentrated water W12 and intake sea water W20 and which has an EC meter 230 for sea water type permeated water W21 to measure the salinity of the sea water type permeated water W21. The system supplies the sea water type permeated water W21 to the sewage type reverse osmosis membrane treatment means 10 in accordance with the salinity of the sea water type permeated water W21.
摘要:
PROBLEM TO BE SOLVED: To provide a compound desalination system that can effectively utilize energy, having a relatively low hydraulic pressure, of non-permeate of a reverse osmosis membrane device in the compound desalination system.SOLUTION: The compound desalination system 100A includes a seawater desalination treatment system 3 that filters seawater D using a seawater reverse osmosis membrane device 38, and a wastewater treatment system 1 that filters wastewater A having a lower salt concentration than the seawater D using a low-pressure reverse osmosis membrane device 16. In the seawater desalination treatment system 3, fine foams are generated in and released from a fine foam generating part 19 in an intake chamber 32 that stores taken-in seawater D, by decompressing non-permeate C discharged from the low-pressure reverse osmosis membrane device 16 of the wastewater treatment system 1.
摘要:
PROBLEM TO BE SOLVED: To provide a method and a device for separating a solvent or a solute from liquid containing the solvent and the solute with less energy.SOLUTION: The method for separating a solvent from an object liquid containing the solvent and a solute includes contacting a first surface of a forward osmosis membrane with the object liquid and contacting a second surface of the membrane with liquid for collection containing a substance having solidity to exert a force for transferring the solvent in the object liquid to the membrane, so that the solvent in the object liquid is transferred outside the second surface of the membrane and the transferred solvent is separated from the substance having solidity by a filter.
摘要:
PROBLEM TO BE SOLVED: To provide an aeration apparatus which can remove a precipitate produced in the slit of an air diffusion membrane, a seawater flue gas desulfurization apparatus equipped with the same and the operation method of the aeration apparatus.SOLUTION: The aeration apparatus is immersed in diluted used seawater, which is water to be treated (not illustrated), and produces fine air bubbles in the diluted used seawater. The aeration apparatus includes: an air supply line Lfor supplying air 122 by blowers 121A to 121D (four blowers in the embodiment) being means for discharging air, a pressure gauge 125 installed in the air supply line L; and an aeration nozzle 123 which includes an air diffusion membrane 11 having a slit where the air is supplied. When air supply pressure exceeds a predetermined threshold value by measurement of the pressure gauge 125, fresh water 141 or water vapor is temporarily supplied to an air supply pipe.
摘要:
PROBLEM TO BE SOLVED: To provide a reverse osmosis treatment apparatus constituted so as to eliminate the nonuniformity in the amount of transmitted water by regulating the pressure in a pressure container to regulate the amount of the transmitted water.SOLUTION: The reverse osmosis treatment apparatus 10 is characterized in that a plurality of reverse osmosis membrane elements 22 equipped with reverse osmosis membranes 28 are connected in series by water collection piping 34, through which the transmitted water obtained by passing water to be treated through the reverse osmosis membranes 28 flows, within the pressure container 24 equipped with an introducing pipe 56 for supplying the water to be treated, the water collection piping 34 is internally equipped with a resistor 80 for separating the transmitted water into the front stage being the supply side of the water to be treated and the rear stage being the discharge side of concentrated water, a first discharge pipe 58 for discharging the transmitted water of the front stage, a second discharge pipe 60 for discharging the transmitted water of the rear stage and a third discharge pipe 62 for discharging the concentrated water and a first valve 64 is provided to a first discharge pipe 68.
摘要:
PROBLEM TO BE SOLVED: To provide a hollow fiber type reverse osmosis membrane which can achieve high level water penetration performance and high level removal performance at a low running cost in separation of solid or separation of a solute from a liquid mixture.SOLUTION: The hollow fiber type reverse osmosis membrane comprising cellulose acetate is characterized in that the amount of penetrated water is 120 to 330 L/m/day and a salt removal rate is 98% or more when an aqueous solution having sodium chloride concentration of 1,500 mg/L is filtrated through the hollow fiber type reverse osmosis membrane from the outside of the membrane toward the inside of the membrane at 25°C and under a pressure of 1.5 MPa and the hollow fiber type reverse osmosis membrane has an outer diameter of 100 to 300 μm, the inner diameter of 50 to 204 μm and a hollow ratio of 24 to 46%.