| 摘要 |
PURPOSE:To efficiently recover and decompose the agricultural chemical on the surface layer by allowing the water falling on the green by water sprinkling or a rainfall to flow into the adjacent bunker, recovering the water in a reservoir and decomposing the chemical entrained by the water by gravel filled in the reservoir. CONSTITUTION:The water falling on the green 1 by water sprinkling or a rainfall contains the agricultural chemical sprinkled over the green 1 and flows into a bunker 3. The water in the bunker 3 flows into a culvert 5 by infiltration. The water is introduced into a reservoir 7, brought into contact with gravel 11 filled in the reservoir and infiltrated to the bottom in a tank 9. The chemical is biologically decomposed by contact with the gravel 11 in the tank 9. The water stored in the tank 9 is periodically sprinkled over the green 1 through a water pipeline 15 and a sprinkler 17. The water is infiltrated into the soil 19, and the chemical which has not been biologically decomposed is decomposed by the microbe in the soil 19. |
