| 摘要 |
PROBLEM TO BE SOLVED: To restrain a small particle of a sedimentation speed from being discharged together with an upflow of treatment water by turbulence of a turning flow when treatment object water is flowed in, in a sedimentation sand separation device for forming the turning flow of the treatment object water in a separation tank, for the problem of the present invention.SOLUTION: For solving the problem, a sedimentation sand separation device is provided with means for equalizing a flow rate of diffusing in the turning center direction of treatment object water flowed in from an inflow part in the turning direction of a turning flow. Thus, turbulence of the turning flow is restrained, and a small particle of a sedimentation speed can be restrained from being discharged together with an upflow of treatment water.SELECTED DRAWING: Figure 1 |
