LIWei,WANGHe,CHENYi-ming,et al.Performance and Microbial Community of Activated Sludge Process for Treatment of Garlic Processing Wastewater[J].China Water & Wastewater,2023,39(11):95-103.
Performance and Microbial Community of Activated Sludge Process for Treatment of Garlic Processing Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第11期
Page:
95-103
Column:
Date of publication:
2023-06-01
- Keywords:
- activated sludge process; garlic processing wastewater; UASB-SBR; microbial community composition
- Abstract:
- UASB-SBR coupling process was applied to treat high concentration garlic processing wastewater. The UASB and SBR reactors were rapidly started by high organic load, inoculation culture or natural culture methods. The effects of pH, HRT and temperature on the removal of organic matter, nitrogen and phosphorus from high concentration garlic processing wastewater were investigated. The microbial community of sludge from SBR system was analyzed by high-throughput sequencing technology, and the performance of UASB-SBR coupling process was investigated. The UASB reactor was successfully started by extending HRT. When the COD in influent was 9 800 mg/L and the temperature was (35±2) ℃, the optimum HRT and pH of UASB were 45 h and 7.5, respectively. The inoculation culture method in SBR had higher impact load resistance, and the threshold for effective removal of organic matter concentration was 6 000 mg/L. When the COD in influent was 6 000 mg/L, the optimal cycle time and temperature of SBR were 12 h and 25 ℃, respectively. Bauldia and Flavobacterium were the dominant bacteria in SBR activated sludge system and had strong organic matter degradation and denitrification ability. The UASB-SBR coupling system had the average removal rates of COD, TP, NH3-N and TN as high as 99%, 94.77%, 95.44% and 94.87%, respectively, and it had a remarkable treatment performance of high concentration garlic processing wastewater.
Last Update:
2023-06-01