The objective of this experiment is to remove nitrogen in nightsoil wastewater by ammonia stripping. It was possible to raise pH until over 11 by dosage of 1% Ca(OH)_(2-) When the nightsoil was unaerated, the removal rate of BOD, COD_(Mn) NH_(3)-N, T-N and T-P were 40%, 77%, 81%, 28%, 58%, 99% respe...
The objective of this experiment is to remove nitrogen in nightsoil wastewater by ammonia stripping. It was possible to raise pH until over 11 by dosage of 1% Ca(OH)_(2-) When the nightsoil was unaerated, the removal rate of BOD, COD_(Mn) NH_(3)-N, T-N and T-P were 40%, 77%, 81%, 28%, 58%, 99% respectively. When it was aerated, the removal rate of BOD, COD_(Mn) NH_(3)-N, T-N and T-P resulted in 38%, 83%, 57%, 34%, 58%, 94%, by the dosage of 3% Ca(OH)_(2) The pH of nightsoil was decreased straightly by the number of exposure to air except the case of pH 12 The removal coefficient K was 0.0017, 0.0028, 0.0042 in the case of pH 10, pH 11, pH 12, respectively. The removal coefficient was not effected from the initial concentration of the nightsoil. The removal rate of NH_(3)-N proportioned to the volume of air exposure, but it was steady after a certain point Therefore, the concentration of NH_(3)-N in the effluent could be controlled by the number of the exposure of nightsoil to air. In this study, The removal rate of NH_(3)-N, T-N, T-P, in the nightsoil after coagulation were 98%, 80%, 99% respectively by ammonia stripping.
The objective of this experiment is to remove nitrogen in nightsoil wastewater by ammonia stripping. It was possible to raise pH until over 11 by dosage of 1% Ca(OH)_(2-) When the nightsoil was unaerated, the removal rate of BOD, COD_(Mn) NH_(3)-N, T-N and T-P were 40%, 77%, 81%, 28%, 58%, 99% respectively. When it was aerated, the removal rate of BOD, COD_(Mn) NH_(3)-N, T-N and T-P resulted in 38%, 83%, 57%, 34%, 58%, 94%, by the dosage of 3% Ca(OH)_(2) The pH of nightsoil was decreased straightly by the number of exposure to air except the case of pH 12 The removal coefficient K was 0.0017, 0.0028, 0.0042 in the case of pH 10, pH 11, pH 12, respectively. The removal coefficient was not effected from the initial concentration of the nightsoil. The removal rate of NH_(3)-N proportioned to the volume of air exposure, but it was steady after a certain point Therefore, the concentration of NH_(3)-N in the effluent could be controlled by the number of the exposure of nightsoil to air. In this study, The removal rate of NH_(3)-N, T-N, T-P, in the nightsoil after coagulation were 98%, 80%, 99% respectively by ammonia stripping.
주제어
#암모니아 탈기법 분뇨 질소제거
※ AI-Helper는 부적절한 답변을 할 수 있습니다.