To provide a pressure type liquid treating column having a simple structure, achieving uniform dispersion, at a low cost, also without the problem of discharging a backwash discharge, and having an inflow apparatus of a treated liquid.
The pressure type liquid treating column 1 having a filled layer 11 filling a filler in the inside thereof and passing the treated liquid 17 through the filled layer 11 by downward flow is provided with the inflow apparatus of the treated liquid in the vicinity of the center of the column top part of the treating column 1, connects the inflow apparatus to an inflow pipe 4 of the treated liquid 17, comprises a distribution master pipe 5 vertically arranged in the the vicinity of the center of the column top part of the treating column 1 and a distribution pipe 6 connected to the distribution master pipe 5, and arranges the outflow opening part of the distribution pipe 6 upwardly facing with the inner face of an end-plate of the column top part. The distribution pipe 6 is provided with 2 to 4 pipes and can use an elbow of 90°. It is preferable that the ratios of the pipe flow velocity of the distribution master pipe 5 and the flow velocity corresponding to an entire opening part of the outflow port of the distribution pipe 6 to the pipe flow velocity of the inflow pipe 4 are 1/1 to 1/5.
NAKAJIMA TAKESHI
AKAGI KEIICHI
TOKYO METROPOLITAN GOV
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