| 摘要 |
A combined advanced water purification system is provided to reduce time required for settling and flotation, improve treatment capability during inflow of high turbidity contaminants, and remove algae and algae-causing organic materials and effectively remove 1,4-dioxane, perchlorate, and traces of organic materials through strong oxidizing power and solid-liquid separation function. In a water purification system for removing suspended solids by the injection of gas, a combined advanced water purification system(10) comprises a flotation settling tank(30) including a rapid settling part(31) having a plurality of inclined plates(311) arranged in a central part thereof to perform a solid-liquid separation process of raw water supplied in the downward direction, and a dissolved gas floating part(32) for discharging the fine floc after floating a fine floc contained in the separating water using micro-gas bubbles generated due to the rapid low pressurization when injecting gas pressurizing water through a gas pressurizing injection port(33) into a gas dissolving unit(331) in which high pressure gas is dissolved into separating water passing through the inclined plates in the upward direction, wherein a plurality of lateral partitions(321) are formed above the inclined plates to move upward the separating water from which solids and liquid have been separated along a moving channel(325) formed by the lateral partitions, the lateral partitions extending from an inflow part are formed of a perforated mesh having a plurality of perforated holes therein, and a gap between the perforated holes is gradually decreased in the end portion direction from a portion connected to the inflow part to maintain constantly a flow rate in the flotation settling tank. |
