|
| Experimental of Influencing Factors of Sulfate Reduction in Microbial Reactors |
|
Received:March 07, 2022
Revised:March 11, 2022
Accepted:March 21, 2022
Published Online:May 11, 2022
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2022.06.014 |
| KeyWord:sulfate wastewater；sulfate reducing bacteria；bioreactor；influencing factors |
| Author | Institution |
| SUN Xiao-yu |
东华理工大学 核资源与环境国家重点实验室;东华理工大学 水资源与环境工程学院 |
| LI Zhe-bing |
东华理工大学 核资源与环境国家重点实验室 |
| WANG Miao |
东华理工大学 核资源与环境国家重点实验室 |
| CHEN Shi-yi |
东华理工大学 核资源与环境国家重点实验室 |
| SUN Zhan-xue |
东华理工大学 核资源与环境国家重点实验室 |
| YUAN Zhi-hua |
东华理工大学 核资源与环境国家重点实验室 |
| ZHENG zeng-jun |
东华理工大学 核资源与环境国家重点实验室 |
| GONG Hui-chun |
东华理工大学 核资源与环境国家重点实验室 |
|
| Hits: 1508 |
| Download times: 1917 |
| Abstract: |
| Sulfate pollution to the mining area and its surrounding groundwater was caused by perennial injection of sulfuric acid during acid in-situ leaching. To solve the problem, sulfate-reducing bacteria culture solution was used to simulate mine wastewater, and bioreactor was used to conduct cyclic batch tests and continuous operation tests. Effects of different fillers, circulating upward flow rate, hydraulic retention time (HRT), influent SO42- concentration, and COD/SO42- value on sulfate reduction were discussed. The test results show that the optimum operating conditions include sponge+K3 mixed filler, HRT=12 h, influent SO42- concentration of about 0.8 g/L, and COD/SO42-=2. The long-term operation results show that at 30 ℃, the effluent SO42- concentration can reach 0.10 g/L, and removal rate of SO42- is 87.9%, which meet the standard of groundwater class Ⅳ and above. |
| Close |
|
|
|