TREATING VESSEL FOR CONTACT OXIDATION OF RIVERS AND CONTACT OXIDATION TREATING DEVICE OF RIVERS

摘要

PROBLEM TO BE SOLVED: To purify the quality of river water by arraying plural pieces of vessel bodies onto a foundation formed by digging down the river bed from upstream to downstream and effectively absorbing and removing the BODs or SSs in the water with aerobic bacteria by the siphon phenomenon to force the water flow to meander in a vertical direction without requiring aerators and without impairing the natural scene of the rivers. SOLUTION: This treating vessel for contact oxidation of the rivers consists of the vessel bodies 10 of a box shape which have bottom walls 11 and peripheral walls 12 erecting from the circumferences of these bottom walls and are arrayed on the foundation 31 formed by digging down the river bed and are held the opened front surface to the same level as the level of the river bed and block walls 14 which are arranged in the direction of shutting off the flow of the river within the vessel bodies 10, segment the inside of the vessel bodies 10 to upstream chambers 10a and downstream chambers 10b allowing the packing of contact materials 18 with respect to the flow of the rivers and of which the top ends project upward from the opened front surfaces of the vessel bodies 10 and constitute water stopping sections 15. Water flow sections 17 communicating the upstream chambers 10a and the downstream chambers 10b are disposed between the bottom walls 11 of the vessel bodies 10 and the bottom ends of these block walls 14.