| 摘要 |
PROBLEM TO BE SOLVED: To provide a polluted water purification system using an inorganic neutral flocculant derived from reclaimed gypsum capable of performing quick purification and reuse of suspended wastewater easily at a low cost.SOLUTION: A polluted water purification system comprises: a primary settling tank 11 into which cutting suspended wastewater flows; a secondary settling tank 12 which is installed so as to be connected to the primary settling tank 11 through a partition wall 12a; a dewatering press device 14 which is movably installed below the primary settling tank 11; an air pump 15 which aerates and agitates the inside of the primary settling tank 11 and circulates water after dewatering to the primary settling tank 11; a first filter F1 which separates sludge in sludge water flowing into the primary settling tank 11 by filtration to discharge the filtered water to the secondary settling tank 12; and a second filter F2 which further filters supernatant water in the secondary settling tank 12 to lead out the filtered water to a clear water tank 13. |
