Treatment effects and genotoxicity relevance of the toxic organic pollutants in semi-coking wastewater by combined treatment process
发布时间：2024-10-22
点击次数：
- 所属单位：
- 环境与市政工程学院
- 发表刊物：
- Environmental Pollution
- 关键字：
- 中文关键字：Semi-coking wastewater;Toxic organic matters;Remov，英文关键字：Semi-coking wastewater;Toxic organic matters;Remov
- 摘要：
- The removal effects of main toxic organic pollutants in semi-coking wastewater by combined treatment process were investigated, while the genotoxicity relevance of wastewater from different treatment units were monitored by using Vicia faba bioassays. Results showed that 37 kinds of toxic organic pollutants were detected in the crude sewage, most of them were removed by physicochemical pretreatment, and the total concentration of organic pollutants decreased from 4826 mg L1 to 546 mg L1. After pretreatment, benzenes, phenols, quinolines and indoles in the wastewater were mainly removed by anaerobic/aerobic biodegradation, but the polycyclic aromatic hydrocarbons (PAHs) were removed mainly by advanced treatment, total concentration of toxic organic pollutants was lower than 0.5 mg L1 in the effluent. Genotoxicity evaluation results showed that the wastewater from coagulating sedimentation unit or foregoing had significant mutagenic properties. However, the micronuclei (MN) frequency (‰, which was calculated by observing 1000 cells) induced by wastewater after adsorption with modified coke was only 8.06‰, it was no significant difference compared with negative control (7.43‰). It could be concluded that the adsorption treatment was required for the safety of effluent, and the physicochemical-biochemical combined process in this study was suitable for high concentration semicoking wastewater treatment.
- 备注：
- 刘永军
- 合写作者：
- JingLiu,AiningZhang,ZheLiu
- 第一作者：
- 刘永军
- 论文类型：
- 期刊论文
- 卷号：
- 卷：
- 期号：
- 期：220
- 页面范围：
- 页：13-19
- 是否译文：
- 否
- 发表时间：
- 2016-10-01