The optimal pH was from 4.0 or 4.5 [13] to 9.0 [12] due to different strains used. HRT is considered to be a major factor influencing the performance of continuous operation
The optimal pH was from 4.0 or 4.5 [13] to9.0 [12] due to different strains used. HRT is considered to be a major factor influencing the performance of continuousoperation