Removal of denatured protein particles enhanced UASB treatment of oxytetracycline production wastewater
文献类型：期刊论文
| 作者 | Tian, Ye ; Tian, Zhe; He, Yupeng; Sun, Guangxi; Zhang, Yu; Yang, Min
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-04-10 |
| 卷号 | 816期号:0页码:151549 |
| ISSN号 | 0048-9697 |
| 关键词 | ANAEROBIC-DIGESTION RESISTANCE GENES METHANE FERMENTATION MEMBRANE BIOREACTOR ORGANIC SUBSTRATE ACTIVATED-SLUDGE GENOME SEQUENCE FOOD WASTE TETRACYCLINE REACTOR |
| 英文摘要 | Enhanced hydrolysis, which can selectively destroy antibiotic potency, has been previously demonstrated to be an effective pretreatment technology for the biological treatment of antibiotic production wastewater. However, full-scale application of enhanced hydrolysis to the treatment of real oxytetracycline production wastewater showed that the up-flow anaerobic sludge blanket (UASB) reactors treating the pretreated wastewater could only be stable under a low organic loading rate (OLR) of 1.8 +/- 0.4 g.COD/L/d. Deterioration of UASB was also confirmed in treating the same wastewater using a bench-scale reactor (R1) at an OLR of 4.4 +/- 0.3 g.COD/L/d. Assuming that the particles formed due to the denaturation of soluble proteins under the hydrolysis temperature (110 degrees C), resulting in the significant increase of suspended solids (SS) in oxytetracycline production wastewater from less than 200 mg/L to 1200 +/- 500 mg/L, were responsible for the deterioration of UASB, the pretreated wastewater was filtered using polypropylene cotton fiber and ultrafiltration membrane, and then fed into two parallel bench-scale UASB reactors (R2 and R3). Both reactors maintained a stable COD removal (53.2% similar to 61.1%) even at an OLR as high as 8.0 g.COD/L/d. When the feed of R3 was switched to unfiltered wastewater, however, deterioration of the reactor occurred again. Microscopic observation showed that the granules in R3 were fully covered by protein particles after the switch of the feed. It was possible that the tight layer of the denatured protein particles blocked the inner pores of the granules, resulting in the obstruction of substrate transfer and biogas emission, while removing the protein particles could abate such blockage problem. This study provides a scientific basis for the efficient treatment of antibiotic production wastewater. (C) 2021 Elsevier B.V. All rights reserved. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47724]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Yang, Min |
| 作者单位 | 1.Chinese Acad Sci, Natl Engn Res Ctr Ind Wastewater Detoxicat & Reso, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, POB 2871, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Ye,Tian, Zhe,He, Yupeng,et al. Removal of denatured protein particles enhanced UASB treatment of oxytetracycline production wastewater[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,816(0):151549. |
| APA | Tian, Ye,Tian, Zhe,He, Yupeng,Sun, Guangxi,Zhang, Yu,&Yang, Min.(2022).Removal of denatured protein particles enhanced UASB treatment of oxytetracycline production wastewater.SCIENCE OF THE TOTAL ENVIRONMENT,816(0),151549. |
| MLA | Tian, Ye,et al."Removal of denatured protein particles enhanced UASB treatment of oxytetracycline production wastewater".SCIENCE OF THE TOTAL ENVIRONMENT 816.0(2022):151549. |
入库方式： OAI收割
来源：生态环境研究中心
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