Abstract: A gas dissolution accelerating device with a simple structure efficiently increases the concentrations of oxygen dissolved in deep water, such as at lake bottoms. A gas dissolution accelerating device includes a cylindrical member located parallel to a vertical direction when installed, a box member having an opening facing downward when installed, and a fixing unit for fixing the box member to a diffuser. The box member includes a top plate having a cone-shaped protrusion protruding inward and a through-hole receiving the cylindrical member. The fixing unit includes a flat attachment plate having an upper surface onto which the box member is mounted, a pair of halved banding members for clamping a feeding pipe of the diffuser, and rod-shaped connecting members connecting the attachment plate to the banding members.

Abstract: A gas dissolution accelerating device with a simple structure efficiently increases the concentrations of oxygen dissolved in deep water, such as at lake bottoms. A gas dissolution accelerating device includes a cylindrical member located parallel to a vertical direction when installed, a box member having an opening facing downward when installed, and a fixing unit for fixing the box member to a diffuser. The box member includes a top plate having a cone-shaped protrusion protruding inward and a through-hole receiving the cylindrical member. The fixing unit includes a flat attachment plate having an upper surface onto which the box member is mounted, a pair of halved banding members for clamping a feeding pipe of the diffuser, and rod-shaped connecting members connecting the attachment plate to the banding members.

Abstract: An aeration unit, an aeration apparatus and a method of aeration are provided that can quickly realize water quality with gas dissolution balance appropriate for living creatures in water, and that can be utilized for treating polluted water at sewage treatment facilities and used in a gas-liquid contact step at chemical plants or others. A multiple stage aeration apparatus constituted with an air diffuser for producing bubbles in water, a liquid foam generating channel part for changing bubbles in water into liquid foam bodies (soap-bubble-like liquid foam aggregate), a gas retention chamber having a space capable of retaining gas in water and a bubble accumulating part for collecting bubbles newly released from below the gas retention chamber and feeding the bubbles to the liquid foam generating channel part connected to the upper part thereof is disclosed.

Abstract: A power generation apparatus that will not exhaust carbon dioxide is provided where a strong rotating motion is created by the combination of solar heat energy, gravitational energy, and ocean current or tidal current energy. In the sea area having stream current such as ocean current and tidal current, the power generation apparatus is constructed by a weight mass provided with a rotation axis (shaft) on the top part thereof, a floating body provided with a bearing for fitting in the rotation axis where it moves up and down according to the swell on the ocean surface, a normal rotation conversion generator for converting the reverse motion produced on the rotation axis to a normal rotating motion by using a one-way clutch or a ratchet mechanism, and a mooring member for fastening the wire rope between the anchor and the connecting point of the floating body and weight mass.

Abstract: An aeration unit, an aeration apparatus and a method of aeration are provided that can quickly realize water quality with gas dissolution balance appropriate for living creatures in water, and that can be utilized for treating polluted water at sewage treatment facilities and used in a gas-liquid contact step at chemical plants or others. A multiple stage aeration apparatus 6a constituted with an air diffuser 2 for producing bubbles in water, a liquid foam generating channel part 3 for changing bubbles in water into liquid foam bodies (soap-bubble-like bubble aggregate), a gas retention chamber 4 having a space capable of retaining gas in water and a bubble accumulating part 5 for collecting bubbles newly released from below the gas retention chamber 4 and feeding the bubbles to the liquid foam generating channel part 3 connected to the upper part thereof is disclosed.

Abstract: A power generation apparatus that will not exhaust carbon dioxide is provided where a strong rotating motion is created by the combination of solar heat energy, gravitational energy, and ocean current or tidal current energy. In the sea area having stream current such as ocean current and tidal current, the power generation apparatus is constructed by a weight mass provided with a rotation axis (shaft) on the top part thereof, a floating body provided with a bearing for fitting in the rotation axis where it moves up and down according to the swell on the ocean surface, a normal rotation conversion generator for converting the reverse motion produced on the rotation axis to a normal rotating motion by using a one-way clutch or a ratchet mechanism, and a mooring member for fastening the wire rope between the anchor and the connecting point of the floating body and weight mass.

Abstract: A device for controlling a dissolved amount of gas. The device is formed of: a pressure reducing part constructed by connecting a hole provided at an upper part of a closed tank to a vacuum pump through a pipe; an injection supply part for injecting fluid to be treated pressurized by a pressurizing pump from the upper part of the tank; a liquid foam generating container where the injected fluid to be treated is received, then gas of the reduced pressure space is involved in, and an air bubble group rises along an inner peripheral wall and is separated from the liquid, and then changes into liquid bubbles in an upper region; a recovery pump part for allowing the liquid bubbles having overflowed from the container; and a tank water level sensor part for maintaining a water level of the treated fluid.

Abstract: Provided are an aeration method, an aeration apparatus and an aeration system which allow, in a sewage disposal plant, a nursery for fish and shellfish and a closed water area in an ocean or the like, the highly efficient dissolution of an gas into the water to be treated and the transfer of the resultant treated water to another place by a water head difference by the use of a conventional apparatus for supplying a gas.

Abstract: A device for controlling a dissolved amount of gas. The device is formed of: a pressure reducing part which is constructed by connecting a hole provided at an upper part of a closed tank to a vacuum pump through a pipe; an injection supply part for injecting treated fluid pressurized by a pressurizing pump from the upper part of the tank; a liquid foam generating part provided with a container where the injected treated fluid is received, then gas of the reduced pressure space is involved in, and an air bubble group rises along an inner peripheral wall and is separated from the liquid, and then changes into liquid bubbles in an upper region; a recovery pump part for allowing the liquid bubbles having overflowed from an upper end of the container; and a tank water level sensor part for transmitting the information for maintaining a water level of the treated fluid.