생물학적 하수종말처리에 의해 처리된 임해도농복합도시 방류하수의 조성평가
The Assessment of Coastal Discharging Sewage Components by Biological Wastewater Treatment - Focused on BOD, COD, SS, TN and TP -
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The water quality of influent and effluent sewage water in wastewater treatment plant was evaluated. Sewage water from the coastal medium and small cities were evaluated using standard methods of water quality. Through this observation, the treatment efficiency of the plant and the amount of sea pollution through effluent water could be estimated. For these purpose, water samples were sampled every week for an year, and their temperature, pH, CODMn, BOD5, SS, T-N and T-P were measured. The temperature of influent and effluent(discharging) water changed to the external air temperature, while the pH was constant over the years, The COD and BOD of influent water showed higher results compared to the effluent water. The COD and BOD in the summer showed lower tendencies compared to that of the winter. In addition, the suspended solids showed relatively high elimination efficiencies due to settling ponds. However the T-N and T-P of influent and effluent water was indifferent. Also, post treatment process was needed to effectively eliminate T-N and T-P. If the results of this work can be used on wastewater treatment process of coastal cities, it can also be used as a basic data on sea pollution due to discharged water from wastewater treatment plants.
Abstract
The water quality of influent and effluent sewage water in wastewater treatment plant was evaluated. Sewage water from the coastal medium and small cities were evaluated using standard methods of water quality. Through this observation, the treatment efficiency of the plant and the amount of sea pollution through effluent water could be estimated. For these purpose, water samples were sampled every week for an year, and their temperature, pH, CODMn, BOD5, SS, T-N and T-P were measured. The temperature of influent and effluent(discharging) water changed to the external air temperature, while the pH was constant over the years, The COD and BOD of influent water showed higher results compared to the effluent water. The COD and BOD in the summer showed lower tendencies compared to that of the winter. In addition, the suspended solids showed relatively high elimination efficiencies due to settling ponds. However the T-N and T-P of influent and effluent water was indifferent. Also, post treatment process was needed to effectively eliminate T-N and T-P. If the results of this work can be used on wastewater treatment process of coastal cities, it can also be used as a basic data on sea pollution due to discharged water from wastewater treatment plants.
참고문헌 (10)
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