| 摘要 |
<p>PROBLEM TO BE SOLVED: To effectively utilize cavitation to purify a polluted water area or waste water with high precision and with high efficiency. SOLUTION: High pressure water 2 jetted from a nozzle 1 is turned into an underwater high speed water jet 3 accompanied by hard cavitation to collide against a concave spherical target plate 14 and it is turned into an impact jet 6 radially expanding and it is turned into a circulating flow 21 circulating largely around the underwater high speed water jet 3. A part of the circulating flow 21 collides against a re-circulating plate 20 provided near the nozzle 1 and flows into the underwater high speed water jet 3. In this way, since a self-circulating phenomenon occurs, decomposition reaction or cytolysis of bacteria is repeated. As a result, a polluted water area or polluted raw water containing bacteria can be purified with high precision and with high efficiency.</p> |
