Studies of the Qualities of Water on Kashiwara Campus of Osaka Kyoiku University and that along the Hara River -Especially the Analysis of Chemical Oxygen Demands and Metal Contents-

大阪教育大学の柏原キャンパスに於ける水質調査を行なう目的で, キャンパス内の各種排水などと大学の排水が放流される原川水系の水質調査を行なった。水質調査は主として化学的酸素要求量と金属元素の含有量について調べた。大学の排水調査の結果, 実験排水用流しに生活排水が, また逆に生活排水用流しに実験排水が流された可能性を示唆する結果が得られた。しかし全体として大学排水についても原川についても特に問題となるほどの汚染は認められなかったが, いずれも経年的に汚染度の増加が認められた。We surveyed the sewage of Kashiwara Campus and the qualities of water along the Hara River into which Kashiwara Campus drains its waste in order to check the qualities of water around Kashiwara Campus. Especially we studied it in terms of chemical oxigen demands and contents of metal elements. As a result, we found that drainage from residence and drainage from laboratories may be mixed up in spite of its systematic separation. As a whole, we didn't find serious pollution either on the Campus or along the Hara Rive, but we came to detect the pollution gradually increasing