Table 1.
Chemical composition of sugar beet distillery stillage [21] treated in aerobic biodegradation.
Table 2.
Biodegradation efficiency of sugar beet distillery stillage under DOT (dissolved oxygen tension) control with different setpoints (75%, 65% and 55% of saturation).
Fig 1.
Effect of DOT control with different setpoints (75%, 65% and 55% saturation) on variations in COD (A), reducing substances with hydrolysis (RS) and sum of organic acid (SOA) content (B) during aerobic biodegradation of sugar beet distillery stillage.
Table 3.
Effect of DOT control with different setpoints (75%, 65% and 55% saturation) on organic components removal during aerobic biodegradation of sugar beet distillery stillage.
Fig 2.
Effect of DOT control with different setpoints (75%, 65% and 55% saturation) on variations in nitrogen and phosphorus content during aerobic biodegradation of sugar beet distillery stillage.
Fig 3.
Variations in DOT and stirring speed control signal during aerobic biodegradation of sugar beet distillery stillage under different DOT setpoints (75%, 65% and 55% saturation).
Fig 4.
Effect of DOT control with different setpoints (75%, 65% and 55% saturation) on variations in bacterial cell number (BCN) and pH during aerobic biodegradation of sugar beet distillery stillage.