JIN Ao-wei,LIAO Fang-xin,SUN Yuan-bo,et al.Stress of High Concentration Organic Carbon Source on Anammox Granular Sludge under Sequencing Batch Operation[J].China Water & Wastewater,2022,38(No.3):14-20.
Stress of High Concentration Organic Carbon Source on Anammox Granular Sludge under Sequencing Batch Operation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
No.第3
Page:
14-20
Column:
Date of publication:
2022-02-01
- Abstract:
- The sequencing batch operation was used to investigate the carbon and nitrogen removal and physical characters of anaerobic ammonia oxidation (Anammox) granular sludge under different high?concentration of COD. The results showed that the sequencing batch operation could reduce the stress of organic carbon source on Anammox granular sludge. Under the condition that the average concentration of influent NH4+-N and NO2--N were 126.0 mg/L and 173.2 mg/L respectively, when COD was below 900 mg/L, it would promote the denitrification and carbon removal of the system. However, there was a significant inhibitory effect on Anammox when the COD concentration was increased to more than 900 mg/L. In addition, the NH4+-N and COD removal efficiency reached the highest at 97.2% and 87.7% when the COD concentration was 600 mg/L. The color of Anammox granular sludge changed from red to dark brown with the organic loading increasing. Also, the granular sludge was dominated gradually at a particle diameter of 1.2-2.0 mm, which accounted for 70.0% at 900 mg/L of COD. However, the Anammox granular sludge disintegrated when the COD concentration was increased to more than 900 mg/L. The sedimentation speed of granular sludge reached highest at 17.0 m/h when COD concentration was 600 mg/L.
Last Update:
2022-02-01