| This Study was performed to analyze the water quality from small urban stream and to restore the stream and the lake to the amenity environment by purifying urban stream. The amenity environment of the urban stream influences on ecosystem and the water quality of the lake. In this study sampling were set for the Shingal stream, the Jigok stream and the sewages which flow in the Shingal stream. The flux, pH, EC, concentration of DO, BOD, COD, NH₄-N, NO₂-N, NO₃-N, T-P, PO₄-P and Cl^- in stream were analyzed from April, 1995 to March, 1996. The results obtained from these investigations were as follows; The annual average pH was 7.63. Concentrations of SS, BOD, T-N and T-P were 10.6㎎/ℓ, 3.42㎎/ℓ, 8.58㎎/ℓ and 0.27㎎/ℓ at the upstream and 24.8㎎/ℓ, 16.64㎎/ℓ, 14.25㎎/ℓ and 0.88㎎/ℓ at the downstream, respectively. The pollutants loading investigated in Shingal stream were proved that SS, BOD, T-N and T-P were 922㎏/day, 620㎏/day, 525㎏/day and 33㎏/day, respectively. To improve the water quality of the Shingal stream and lake Shingal, we will construct wastewater treatment plant and use to methods of direct purification. |
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