摘要:
There are provided a water treating method and water treating apparatus which can significantly improve an effect of eliminating microorganisms contained in water intended for drinking and cooking or waster water and a hydroponics system using the apparatus. The method comprises a first treating step of immersing an electrode and carbon fibers capable of collecting at least microorganisms in a passage of for-treatment water and applying a positive potential to the carbon fibers and a negative potential to the electrode so as to adsorb the microorganisms on the carbon fibers, a second treating step of stopping flow of the for-treatment water after completion of the first treating step and increasing the potentials applied to the carbon fibers and the electrode in the presence of the for-treatment water, while polarities of the potentials applied to the carbon fibers and the electrode are kept, so as to cause electrolysis of the for-treatment water, and a third treating step of applying an alternating voltage between the electrode and the carbon fibers in the presence of the for-treatment water after completion of the second treating step.
摘要:
In a circulation system of treatment-object water (waste water), a water treating apparatus and a pH adjuster are provided. A carbon fiber that can collect at least microorganisms is disposed in the water treating apparatus. The carbon fiber is immersed in the treatment-object water, and potential is applied to the carbon fiber. Further, pH of the treatment-object water is adjusted by the pH adjuster in a direction in which adsorption of microorganisms in the treatment-object water to the carbon fiber is facilitated. As a result, the microorganisms are strongly attracted and adsorbed to the carbon fiber.
摘要:
There is provided a method for water treatment, capable of greatly improving the effect of removing microbes contained in water for eating and drinking, or discharged water. This water treatment method comprises: a first treatment step of dipping a pair of electrodes and a conductor capable of collecting at least microbes in a running channel of water to be treated, and applying a positive potential to the conductor and applying negative potentials to the electrodes to adsorb the microbes on the conductor; a second treatment step of stopping the flow of the water to be treated after an end of the first treatment step, and increasing the potentials applied to the conductor and the electrodes to start the electrolysis of the water to be treated while the polarities of the potentials applied to the conductor and the electrodes are maintained intact in the presence of the water to be treated; and a third treatment step of stopping the application of the potential to the conductor after an end of the second treatment step, and applying a positive potential to one of the pair of electrodes and applying a negative potential to the other of the electrodes in the presence of the water to be treated.
摘要:
There is provided a water treating method which can not only improve an effect of eliminating microorganisms in water intended for cooking and drinking or waste water but also prevent a reduction in trace amounts of nutritional elements. In the method, at least a pair of carbon fibers capable of collecting at least microorganisms are immersed in for-treatment water, potentials of opposite polarities are applied to the carbon fibers, and the polarities of the potentials are switched at a predetermined time interval so as to adsorb the microorganisms on the carbon fibers. After the microorganisms are adsorbed, a positive potential is applied to one of the carbon fibers, and a negative potential is applied to the other so as to cause electrolysis. Then, an alternating voltage is applied to the carbon fibers so as to heat the for-treatment water and the carbon fibers.
摘要:
There are provided an electrode for electrolysis which takes into consideration safety to human bodies and environmental pollution upon disposal of the electrode, produces ozone with high efficiency and has excellent durability, a production process of the electrode, and an active oxygen producing device using the electrode. In an electrode 5 for electrolysis which has an electrode catalyst at least on the surface and produces ozone or active oxygen in for-treatment water by electrolysis, the electrode catalyst contains a dielectric which constitutes more than 70% of the surface area of the electrode catalyst.
摘要:
The present invention has an object of providing a sewage treatment method and a sewage treatment system in a combined sewer system which can safely treat sewage, and in a combined sewer system where wastewater and rainwater collected flow together as the sewage in a single pipe, the sewage is electrochemically treated, i.e., electrolytically treated by use of electrodes for electrolysis to produce hypohalogenous acid, ozone or activated oxygen in the sewage. The thus produced hypohalogenous acid, ozone or activated oxygen can treat contaminants such as organic substances and coliforms present in the sewage.
摘要:
An electric device 1 includes: an air inlet 3 through which air is taken in; a gas-liquid contact portion 5 for making gas-liquid contact between the air taken in and electrolyzed water 4 to purify the air; a water collecting portion 6 for collecting moisture in the air after the gas-liquid contact; an air outlet 7 through which the air the moisture in which was collected is ejected, wherein the air inlet 3, the gas-liquid contact portion 5, the water collecting portion 6, and the air outlet 7 are arranged in sequential order from upstream of an air duct 2; a water storage portion 8 in which the gas-liquid contact portion 5 is dipped and in which the water collected by the water collecting portion 6 is stored; and an electrolyzing portion 9 for generating the electrolyzed water 4 containing an active oxygen species by electrolyzing the water stored in the water storage portion 8. As a result, a compact electric device with an air cleaning function is provided at low cost that is capable of generating water containing an active oxygen species without requiring additional water feed and without generating a by-product.
摘要:
Wastewater, in the form of a colloidal solution containing microparticles, is filtrated using a second filter, having a gel film that is formed by suction on the surface of a first filter. The suction pressure in this process is made extremely weak to maintain the filtration capacity while extending intervals prior to clogging of second filter. Furthermore, the gel that becomes adsorbed onto the surface of second filter can be separated readily from the surface of second filter by stopping the suction and filtration can be continued again thereafter.
摘要:
Provided are a coagulation treatment apparatus capable of removing fine objects of removal from a fluid containing the objects of removal, and a coagulation treatment method using the apparatus. A coagulation treatment apparatus for a fluid according to the present invention includes a production device for introducing ions of metal belonging to Group 8 of the periodic table into a fluid containing objects of removal and for producing a coagulated substance in which the objects of removal and the metal ions are bonded to each other. Moreover, a coagulation treatment apparatus of another embodiment includes: the production device for introducing ions of metal belonging to Group 8 of the periodic table into a fluid containing objects of removal and for producing a coagulated substance in which the objects of removal and the metal ions are bonded to each other; and the introduction device for coagulating the objects of removal by introducing the coagulated substance produced by the production device into the fluid.
摘要:
An object is to provide a water treatment device which can treat for-treatment water containing fluorine components into a state adaptable to the environment and which can treat nitrogen compounds without influencing a concentration of the for-treatment water containing the nitrogen compounds. The water treatment device includes: a fluorine content removing unit to separate a substance to be removed from the for-treatment water in which the substance to be removed including a fluorine content is mixed; an electrochemical treatment unit including at least a pair of electrodes submerged at least partially in the for-treatment water, from which the substance to be removed has been separated, to perform a treatment by an electrochemical technique; and a biological treatment unit which biologically treats the water treated by the electrochemical technique.