The objective of this studying was to accurate determination of Biological Oxygen Demand (BOD) through the use of two types of prepared inoculums, the natural activated sludge supplied from conventional wastewater t...The objective of this studying was to accurate determination of Biological Oxygen Demand (BOD) through the use of two types of prepared inoculums, the natural activated sludge supplied from conventional wastewater treatment plant and the modified activated sludge prepared from activated sludge of wastewater treatment plant of refinery factory. Analytical method was used to measurement of BOD by preparing the standard curve of BOD in basal medium. The results showed to the large differences in BOD values in basal medium (30-300 mg/L) and conventional wastewater (80-320 mg/L) when they were inoculated with natural and modified activated sludge respectively. It was also found an ability of modified sludge to remove high concentrations of oil and greases.展开更多
文摘The objective of this studying was to accurate determination of Biological Oxygen Demand (BOD) through the use of two types of prepared inoculums, the natural activated sludge supplied from conventional wastewater treatment plant and the modified activated sludge prepared from activated sludge of wastewater treatment plant of refinery factory. Analytical method was used to measurement of BOD by preparing the standard curve of BOD in basal medium. The results showed to the large differences in BOD values in basal medium (30-300 mg/L) and conventional wastewater (80-320 mg/L) when they were inoculated with natural and modified activated sludge respectively. It was also found an ability of modified sludge to remove high concentrations of oil and greases.