Issue 6, 2023

Treatment of nitrate-contaminated groundwater using microbially enhanced permeable reactive barrier technology

Abstract

Microbially enhanced permeable reactive barriers (PRBs) are a technology for the remediation of NO3-N-contaminated groundwater. The removal of NO3-N from nitrate-contaminated groundwater using a sulfur-based biodenitrification reactor was studied. The average values of the NO3-N removal efficiency using SSS (sand : cement : S0 : scallop shell = 1 : 1 : 1.5 : 2) and SWC (sand : cement : S0 : wood chips = 1 : 1 : 1.5 : 0.5) reactors were 97.75% and 90.06%, respectively. In addition, the maximum value of the NO3-N removal efficiency using the SSS reactor reached 100% with a low NO2-N accumulation rate, and the scallop shell was essential to stabilize the pH value of the reactor and reduce the production of SO42−. In the SSS and SWC reactors, Sulfurimonas and Thiobacillus played major roles in the denitrification process, together constituting 72.29% and 84.69%, respectively. With the analysis of organic elements in the composite filler and scanning electron microscopy (SEM), we also found that S0 played an important role in the reactor. Therefore, our research could provide some technical insights into the treatment of nitrate-contaminated groundwater.

Graphical abstract: Treatment of nitrate-contaminated groundwater using microbially enhanced permeable reactive barrier technology

Supplementary files

Article information

Article type
Paper
Submitted
15 Sun 2023
Accepted
03 Dzi 2023
First published
06 Dzi 2023

Environ. Sci.: Water Res. Technol., 2023,9, 1610-1619

Treatment of nitrate-contaminated groundwater using microbially enhanced permeable reactive barrier technology

S. Liu, B. Gao, X. Xiong, N. Chen, K. Xuan, W. Ma, Y. Song and Y. Yu, Environ. Sci.: Water Res. Technol., 2023, 9, 1610 DOI: 10.1039/D3EW00019B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements