| 摘要 |
To provide a filter applied slaked lime injection apparatus capable of effectively improving efficiency and stability of coagulation and sedimentation of raw water, preventing sludge increase and whitening phenomenon, preventing corrosion of metal pipe and concrete structure and improving taste of tap water to a level of spring water, a slaked lime injection method using the apparatus, and a water purification method including the slaked lime injection method using the apparatus. A filter applied slaked lime injection apparatus(1) comprises: a slaked lime injecting agitation tank(1a) comprising a body(2), a partition(3) for dividing a region except a lower part of the body into two equal parts, a speed reduction motor(181) installed at the upper side of the body, a rotary shaft(4) extended from the speed reduction motor, an impeller(4a) fixed to a lower part of the rotary shaft, a purified water introduction pipe(7) connected with one side of an upper part of the body, a primary filter(5) installed in a region defined by the inner circumference of the other side of the body oppositely directed to the purified water introduction pipe and the partition, and a secondary filter(6) formed at the upper side of the primary filter; and a recrystallized material filter tank(1b) comprising a body(2a), a partition(3a) for dividing a region except a lower part of the body into two equal parts, and filters(5a,6a) formed on the inner circumference of the body, wherein heights of the purified water introduction pipe, the secondary filter of the slaked lime injecting agitation tank and the secondary filter(6a) of the recrystallized material filter tank are lowered step by step, a primary filter pipe(171) is formed between the secondary filter of the slaked lime injecting agitation tank and the recrystallized material filter tank, and a secondary filter pipe(172) is formed on the filter of the recrystallized material filter tank. |
