REMOVAL EFFECT OF VERMIFILTRATION ON ARGs AND ARB IN EXCESS SLUDGE

ZHAO Ran; XING Meiyan; YANG Gege; XING Libo

doi:10.13205/j.hjgc.202212015

Volume 40 Issue 12

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(12): 112-120

ZHAO Ran, XING Meiyan, YANG Gege, XING Libo. REMOVAL EFFECT OF VERMIFILTRATION ON ARGs AND ARB IN EXCESS SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 112-120. doi: 10.13205/j.hjgc.202212015

Citation:

ZHAO Ran, XING Meiyan, YANG Gege, XING Libo. REMOVAL EFFECT OF VERMIFILTRATION ON ARGs AND ARB IN EXCESS SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 112-120. doi: 10.13205/j.hjgc.202212015

ZHAO Ran, XING Meiyan, YANG Gege, XING Libo. REMOVAL EFFECT OF VERMIFILTRATION ON ARGs AND ARB IN EXCESS SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 112-120. doi: 10.13205/j.hjgc.202212015

Citation:

ZHAO Ran, XING Meiyan, YANG Gege, XING Libo. REMOVAL EFFECT OF VERMIFILTRATION ON ARGs AND ARB IN EXCESS SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 112-120. doi: 10.13205/j.hjgc.202212015

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REMOVAL EFFECT OF VERMIFILTRATION ON ARGs AND ARB IN EXCESS SLUDGE

doi: 10.13205/j.hjgc.202212015

1. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Tongji Architectural Design (Group) Co., Ltd, Shanghai 200092, China

Received Date: 2022-02-04
Available Online: 2023-03-23

Abstract

Abstract

Vermifiltration (VF) is a low-carbon and eco-friendly technology. Based on the excellent excess sludge reduction efficacy, the removal effects of newly emerging pollutants, antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARB) were evaluated, with a conventional biofilter (BF, no earthworm) as a control. The results indicated that the VF increased the removal rate of ARB (tetracycline resistant bacteria, sulfamethoxazole resistance bacteria and double resistance bacteria) by more than 25%, and exhibited higher but selective ARGs (tetO, tetM, tetQ, tetW, sul1, sul2) removal rates, generally increased by more than 20%, compared to the BF. Moreover, the average removal rate of intI1 by VF was 98.24%, reducing the risk of horizontal transmission of ARGs. In summer and winter, compared with the BF, the removal of ARGs and ARB by the VF increased by more than 15%, indicating that the addition of earthworms weakened the inhibitory effect of low and high temperatures. Conclusively, vermifiltration could effectively improve the removal rates of various ARGs and ARB in the excess sludge by the excellent excess sludge removal, which provides a reference for the ARGs and ARB removal assisted by the earthworms.
- vermifiltration,
- ARGs,
- ARB,
- quantitative PCR

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References(37)

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