古紙廢水의 生物學的 處理時 處理效率과 適定 運營에 關한 硏究 = A Study on the efficiency of treatment and proper management in biological treatment of old paper mill wastewater

다국어 초록 (Multilingual Abstract)

This study was carried out to estimate the efficiency of treatment and proper management of wastewater treaterment plant in biological treatment of old paper mill wastewater.
In this study, the F/M ratio was changed 0.1, 0.2, 0.3 and 0.4, HRT and temperature were changed 12hr, 24hr, 48hr, 72hr and 20℃, 26℃, 30℃ respectively.
1. By case of the F/M ratio, the range of COD result was 83%∼85% and the SS result was 82%∼93% in the efficiency of treatment when the F/M ratio was changed from 0.1 to 0.4 and the HRT was 48hr.
Therefore, the efficency of treatment of COD and SS was little influenced by the change of F/M ratio.
2. And in the change of hydraulic retention time(HRT) when the HRT was changed as 0hr, 12hr, 24hr, 48hr and 72hr, the efficiency of treatment was upgraded as the term of HRT.
3. In the case of temperature, when the condition of inside of the reactor was changed from 20 ℃ to 32 ℃, the efficiency of the COD and SS was moved up.
4. Because the COD is 130 ㎎/ℓ and the SS is 120 ㎎/ℓ as the standard of applied wastewater discharge, in the condition of old paper mill was wastewater plant of 20℃ the hydraulic retention time of 48hr is suitable. In the case of 26℃ and 32℃ the HRT of 24hr is proper.