Abstract: The present precipitate removing apparatus is a precipitate removing apparatus for removing a precipitate, precipitating on the bottom of a water tank that stores a liquid (cooling water), and includes an injector provided in the water tank, and an introduction pipe for introducing the liquid in the water tank to the injector. The introduction pipe is provided with a pressure pump for pumping the liquid in the water tank to the injector.

Abstract: The present microbubble generator is a microbubble generator for generating microbubbles in a liquid, including a straight pipe made of porous ceramics, having one end connected to a compressor and the other end blocked, and the straight pipe having an average pore diameter of 1.5 ?m or less.

Abstract: The present tourmaline treatment device includes a housing, and a container disposed in the housing so as to partition the inside of the housing into an upstream space and a downstream space and contain tourmaline granules. The container includes an upstream partition wall facing the upstream space and a downstream partition wall facing the downstream space. The upstream partition wall is provided with a plurality of inflow holes for introducing cooling water into the container from the upstream space, and the downstream partition wall is provided with a plurality of outflow holes for allowing cooling water to flow out from the container into the downstream space. The container further includes flow velocity control means for increasing flow velocity of cooling water passing through the inside of the container.

Abstract: A water activator of the present application includes a cylindrical tank, a double cylindrical container concentrically arranged within the tank, and a plurality of granular water activating materials (ceramic balls) filled in the container. The container includes a bottom plate, an inner cylinder, an outer cylinder, and a lid plate. Among the bottom plate, the inner cylinder, the outer cylinder and the lid plate, a cylindrical filling space in which the plurality of granular water activating materials are filled over the axial direction is formed, and each of the inner cylinder and the outer cylinder is formed to regulate the passage of the granular water activating materials and allow the passage of water. Furthermore, an inlet is provided to allow water to flow tangentially into the tank, and an outlet is provided to allow the water inside the inner cylinder of the container to flow out of the tank.

Abstract: The present cooling-water circulation system includes a cooling-tower-side circulation path for circulating cooling water between a cooling tower and a chiller machine, and a chiller-machine-side circulation path for circulating cooling water between the chiller machine 6 and a cooling target part. The cooling-tower-side circulation path and the chiller-machine-side circulation path are connected by a first connection pipe for introducing cooling water circulating in the chiller-machine-side circulation path into the cooling-tower-side circulation path.

Abstract: The present tourmaline treatment device includes a housing, and a container disposed in the housing so as to partition the inside of the housing into an upstream space and a downstream space and contain tourmaline granules. The container includes an upstream partition wall facing the upstream space and a downstream partition wall facing the downstream space. The upstream partition wall is provided with a plurality of inflow holes for introducing cooling water into the container from the upstream space, and the downstream partition wall is provided with a plurality of outflow holes for allowing cooling water to flow out from the container into the downstream space. The container further includes flow velocity control means for increasing flow velocity of cooling water passing through the inside of the container.