Abstract: Provided is a multi-tube nozzle for use in eradicating harmful aquatic organisms, which physically kills harmful aquatic organisms while feeding water and thus allows intake water to be fed directly into a culture tank or a ballast tank without the need for a pretreatment tank, chemicals, neutralizers, etc. A multi-tube nozzle (A) for use in eradicating harmful aquatic organisms includes at least three nozzle tubes (1) that are provided adjacent to each other. The nozzle tubes (1) each includes: an inlet-side opening section (2) having an inner diameter that decreases from an inlet opening toward a throat section (3) located in the middle of the tube; an outlet-side opening section (4) having an inner diameter that increases from the throat section (3) toward an outlet opening; and the throat section (3) having a smallest inner diameter. The adjacent nozzle tubes (1) are spaced apart by a distance such that the adjacent inlet-side opening sections (2) overlap each other.

Abstract: Provided is a multi-tube nozzle for use in eradicating harmful aquatic organisms, which physically kills harmful aquatic organisms while feeding water and thus allows intake water to be fed directly into a culture tank or a ballast tank without the need for a pretreatment tank, chemicals, neutralizers, etc. A multi-tube nozzle (A) for use in eradicating harmful aquatic organisms includes at least three nozzle tubes (1) that are provided adjacent to each other. The nozzle tubes (1) each includes: an inlet-side opening section (2) having an inner diameter that decreases from an inlet opening toward a throat section (3) located in the middle of the tube; an outlet-side opening section (4) having an inner diameter that increases from the throat section (3) toward an outlet opening; and the throat section (3) having a smallest inner diameter. The adjacent nozzle tubes (1) are spaced apart by a distance such that the adjacent inlet-side opening sections (2) overlap each other.

Abstract: The present invention provides an epoch-making fluid reforming device which requires a small installation site, avoids clogging of pipes, allows uniform on-site adjustment, does not use chemicals or minimizes chemicals ii any, enables germ treatment, and purifies and reforms every fluid including water. The fluid reforming device has (a) a container for fluid reforming having an inlet for introducing an unpurified fluid and an outlet for discharging a purified fluid; (b) a pair or a plurality of pairs of AC application electrodes stored in the container; (c) a cylindrical ground electrode surrounding the AC application electrodes; (d) a polarity switching circuit connected to the AC application electrodes for switching the polarities of the pair of electrodes; and (e) a constant current supply having a current detector for detecting current flowing between the AC application electrodes in fluid reforming, the constant current supply keeping a current value detected by the current detector constant.

Abstract: The present invention provides ballast water treatment equipment which can decompose fungicide included in ballast water and reduce the amount of use of fungicide adsorbing material by passing through the ballast water.

Abstract: The present invention provides ballast water treatment equipment which can decompose fungicide included in ballast water and reduce the amount of use of fungicide adsorbing material by passing through the ballast water.

Abstract: The present invention provides an epoch-making fluid reforming device which requires a small installation site, avoids clogging of pipes, allows uniform on-site adjustment, does not use chemicals or minimizes chemicals ii any, enables germ treatment, and purifies and reforms every fluid including water. The fluid reforming device has (a) a container for fluid reforming having an inlet for introducing an unpurified fluid and an outlet for discharging a purified fluid; (b) a pair or a plurality of pairs of AC application electrodes stored in the container; (c) a cylindrical ground electrode surrounding the AC application electrodes; (d) a polarity switching circuit connected to the AC application electrodes for switching the polarities of the pair of electrodes; and (e) a constant current supply having a current detector for detecting current flowing between the AC application electrodes in fluid reforming, the constant current supply keeping a current value detected by the current detector constant.