Sanyo Electric Co., Ltd.

Yasuhito Kondo

Masahiro Iseki

Yasuhiko Shimizu

Tatsuya Hirota

Tamotsu Kawamura

Kiyokazu Fujikawa

Minoru Nakanishi

Minoru Kishi

Yozo Kawamura

Kazuhiro Yamamoto

Yoshihiro Inamoto

Takaaki Yonezawa

Tsuyoshi Rakuma

Naoki Hiro

Hiroyuki Umezawa

Tomohito Koizumi

Katsuhiko Mushiake

Yurika Koizumi

Yasuhito Shimizu

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.

Water treating method, water treating apparatus, and hydroponics system using the apparatus

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.

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 electrodefor 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.

Electrolyzing electrode and production method therefor and electrolysis method using electrolyzing electrode and electrolysis solution producing device

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.

Water treating method and water treating system

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.

Water treating method, water treating apparatus, and hydroponic system using the same

The present invention is directed to a new water treatment device comprising an electrolytic tank to put water in, an electrode provided in the electrolytic tank, a water treating path for pouring water in a pool and returning to the pool the water in the electrolytic tank, a residual chlorine sensor for measuring the residual chlorine concentration of water, and control means for controlling the energization of the electrode on the basis of the measured value by the residual chlorine sensor, and capable of simply and efficiently sterilizing water stored in pools of various sizes from a swimming pool to a home bathtub.

Water treatment device

The present invention is directed to a new water treatment device comprising an electrolytic tank to put water in, an electrode provided in the electrolytic tank, a water treating path for pouring, from a pool storing water, the water into the electrolytic tank and returning to the pool the water in the electrolytic tank, a residual chlorine sensor for measuring the residual chlorine concentration of the water, and a circulating pump provided on the downstream side of the electrolytic tank on the water treating path in order to circulate the water, and capable of simply and efficiently sterilizing water stored in pools of various sizes from a swimming pool to a home bathtub.

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Ora-gun, Japan

Yasuhito Kondo