Studies on the self purification of rivers, 1: On the Katube and Hioki rivers [Japan]
1992
Yoshida, I. (Tottori Univ. (Japan). Faculty of Agriculture) | Hiraiwa, T.
In this paper, the results, of an investigation of water quality in the Katube and the Hioki rivers in Tottori prefecture are reported. These results show that even both rivers in rural areas are polluted. In case of the Hioki river, the causes are due to industrial and domestic wastewaters. On the other hand, the domestic wastewater is the main cause in the Katube river. The water is self-purified while flowing down from points H3 to H5 in Hioki river, and from points K5 to K6 in the Katube river where these wastewater aren't discharged. On the contrary, the receiving water is always polluted where these wastewaters are discharged. From the above-mentioned, we can find it to be vitally important that we should be careful to keep the water as clean as possible as even in rural areas
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