원문정보
초록
영어
Milking parlor wastewater contains high concentration suspended solid (SS), nitrogen, and/or phosphate as well as organic compounds. A new biological wastewater process by magnetic separation, magnetic activated sludge (MAS) process, was applied to milking parlor wastewater treatment process. A three step wastewater treatment process of coagulation sedimentation / ammonia stripping (C/S), magnetic activated sludge process and contact oxidation (CO) was proposed for removal of these pollutants. First step, C/S process recovered 96% TN and 96% PO4 3--P as resource for fertilizer from the wastewater. 81% biochemical oxygen demand (BOD) in wastewater was removed after MAS process. As a results, all pollutant concentrations satisfied Japanese effluent standards. Most of residual BOD and SS were removed by the CO process. It was estimated that the proposed process could reduce the process space to 1/7.
목차
1. INTRODUCTION
2. MATERIAL AND METHODS
3. RESULTS AND DISCUSSION
3.1. The component of farm wastewater
3.2. The C/S process
3.3. The MAS process
3.4. The CO process
3.5. Treatment performance
4. CONCLUSION
ACKNOWLEDGMENT
REFERENCES