Innovative trickling biofilter system for hospital wastewater treatment
Đỗ Văn Mạnh
Trần Văn Hòa
Trần Đức Long
Trương Thị Hòa
Hoàng Long
Abstract
Innovative Trickling biofilter system was applied for wastewater treatment of Danang Rehabilitation - Sanatorium Hospital in this study. The residts have shown that the removal efficiencies of COD and BODj at loading of 2.5 - 4 kg/m^.day were about 90 %. The inlet concentrations of and N-N03' were so high as 33.1 and 26.2 mg/L, respectively. However, the remaining of treated wastewater concentration is 1.4 and 5.2 mg/L, coưesponding to the removal efficiencies of 97 and 80 %, respectively. Otherwise, the values of total suspended solid (TSS), phosphates (P), and coliforms were below the limitations of QCVN 28:2010/BTNMT, column A. Resulting fi^m the obtained data in this study, we emphasize that the innovative trickling biofilter system with air supply is appropriate with health-care wastewater ưeatment and consistent with economic and operating conditions in Vietnam.