| 摘要 |
PROBLEM TO BE SOLVED: To provide a water treatment system which can suppress deterioration of treatment performance of a trickling filter without adversely affecting microorganisms existing in a filter material layer of the trickling filter even when the temperature of outside air drops.SOLUTION: A water treatment system 100 of the present invention includes: a trickling filter 10 which is formed by arranging a screen 14, a filter material layer 15 supported by the screen 14, and a spray mechanism 16 spraying water to be treated onto the filter material layer 15 in a first non-opened water tank 13 having a first air inflow port 11 and a first air discharge port 12; a biological treatment tank 20 which aerobically treats inflow water in a second non-opened water tank 23 having a second air inflow port 21 and a second air discharge port 22; and a communication pipe 30 which connects the first air inflow port 11 of the trickling filter 10 and the second air discharge port 22 of the biological treatment tank 20 to each other. |
