WANGYun-fei,JINXi-biao,ZHUGuo-qiang,et al.Biological Pretreatment Process for Removal of Tetracyclines Antibiotic from Wastewater[J].China Water & Wastewater,2023,39(1):86-90.
Biological Pretreatment Process for Removal of Tetracyclines Antibiotic from Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第1期
Page:
86-90
Column:
Date of publication:
2023-01-01
- Keywords:
- tetracyclines antibiotic; pretreatment; biological aeration; coagulation; iron salt; volatile fatty acid
- Abstract:
- The biological treatment of tetracyclines (TCs) antibiotic production wastewater has the common problems such as large amount of foam, difficulty in sludge settlement and low treatment efficiency. To solve these problems, a pretreatment process consisting of biological aeration and iron salt coagulation was proposed. The biological pretreatment not only increased the TCs removal rate, but also reduced the dosage of iron salt. When the dosage of iron salt (calculated by Fe) was 100 mg/L, the TCs removal rate increased from 27.5% to 84.5%. To achieve the same TCs removal performance for wastewater without biological pretreatment, the dosage of iron salt was 600 mg/L. The reason might be due to the fact that 77.8% of volatile fatty acids in wastewater were effectively removed during the biological pretreatment process, thus reducing their interference to the removal of TCs by ferric coagulation. After the biological pretreatment, the COD in the effluent from the subsequent biological treatment system decreased from 531 mg/L to 199 mg/L, and the treatment performance was significantly improved.
Last Update:
2023-01-01