Abstract: An inclined sedimentation acceleration apparatus includes an inclined part having a plurality of inclined flow paths through which raw water flows, and side plates disposed on both sides of the inclined part. An upper ridge part of the inclined part is disposed at a height different from that of an upper ridge part of the side plate. Suspended solids are less likely to accumulate on an upper surface of the inclined sedimentation acceleration apparatus.

Abstract: An inclined sedimentation acceleration apparatus 100 includes an inclined part 10 having a plurality of inclined flow paths 30 through which raw water flows, and side plates 20 disposed on both sides of the inclined part 10. An upper ridge part 15 of the inclined part 10 is disposed at a height different from that of an upper ridge part 21 of the side plate 20. Suspended solids are less likely to accumulate on an upper surface of the inclined sedimentation acceleration apparatus 100.

Abstract: A method for measuring bromate ion is provided that provides high-sensitivity measurement results more simply and more quickly than conventional bromate ion measurement methods. A fluorescent substance that is quenched by coexistence with bromate ions is added to a sample 130 and the fluorescence intensity of the fluorescent substance after quenching is measured, the measured fluorescence intensity being subtracted from the fluorescence intensity of a standard sample containing no bromate ions to calculated the fluorescence intensity difference. The bromate ion concentration is calculated from the calculated fluorescence intensity difference, using a pre-determined calibration line between the fluorescence intensity difference and the bromate ion concentration.

Abstract: A device and a method for production of magnetized water by changing the arrangement of molecules of water takes advantage of the phenomenon that molecules of water form clusters and become enriched in a pulsating magnetic field. The device may include a chamber, for placing a container of purified water in, wound with coils of wire a predetermined number of rounds; a means of supplying power to convert originally supplied alternating current of electricity into pulsating direct current signals and impress them on said coils for induction of a pulsating magnetic field to said chamber; a means of cooling said chamber; a means of sensing changes in temperature of said coils; a means of measuring time to gauge the time of magnetization of said purified water; and a means of control to stop input of direct current pulsating signals when the time spent on magnetizing has reached a preset time.

Abstract: A water purifier using common advantages of natural and forced types operated without an external electric power source, resulting in high efficiency of water purification.