EFFECTS OF DIMETHYL PHTHALATE ON VEGETATION-ACTIVATED SLUDGE PROCESS AND ITS REMOVAL PERFORMANCE

LI Zhanpeng; YUAN Huizhou; KE Shuizhou; YUAN Jiajia; ZHU Jia

doi:10.13205/j.hjgc.202212027

Volume 40 Issue 12

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(12): 202-210

LI Zhanpeng, YUAN Huizhou, KE Shuizhou, YUAN Jiajia, ZHU Jia. EFFECTS OF DIMETHYL PHTHALATE ON VEGETATION-ACTIVATED SLUDGE PROCESS AND ITS REMOVAL PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 202-210. doi: 10.13205/j.hjgc.202212027

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LI Zhanpeng, YUAN Huizhou, KE Shuizhou, YUAN Jiajia, ZHU Jia. EFFECTS OF DIMETHYL PHTHALATE ON VEGETATION-ACTIVATED SLUDGE PROCESS AND ITS REMOVAL PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 202-210. doi: 10.13205/j.hjgc.202212027

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EFFECTS OF DIMETHYL PHTHALATE ON VEGETATION-ACTIVATED SLUDGE PROCESS AND ITS REMOVAL PERFORMANCE

doi: 10.13205/j.hjgc.202212027

1. College of Civil Engineering, Hunan University, Changsha 410000, China;
2. School of Materials and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518000, China

Received Date: 2022-01-09
Available Online: 2023-03-23

Abstract

Abstract

To explore the removal of dimethyl phthalate (DMP) in a vegetation-activated sludge process (V-ASP), DMP with influent concentration gradients of 50 mg/L, 5 mg/L, 500 μg/L, 50 μg/L and 0 μg/L was set to investigate the effects of conventional pollutants effluent concentration, the changes of plant and microorganism and its removal efficiency. The results showed that DMP had little effect on the removal of conventional pollutants in V-ASP, and the removal efficiency of TN got improved when the concentration of DMP was greater than or equal to 500 μg/L. The removal rates of 50 mg/L, 5 mg/L, 500 μg/L and 50 μg/L DMP in V-ASP were 99.97%, 99.51%, 94.19% and 83.68%, respectively. The main removal pathway of DMP in V-ASP was found out to be microbial catabolism, and the proportion of DMP absorbed by plants was less than 1.12%. When the influent DMP concentration reached 5 mg/L, the plant in V-ASP was significantly inhibited. High-throughput sequencing results showed that DMP had a certain effect on the microbial diversity of activated sludge and rhizosphere sludge in V-ASP. The relative abundance of Proteobacteria was the highest in the microbial community, and that of Rhodococcus increased with the increase of DMP concentration.
- vegetation-activated sludge process,
- dimethyl phthalate,
- microbial community structure

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References(41)

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