Characteristics of refractory organics in industrial wastewater treated using a Fenton-coagulation process
文献类型：期刊论文
| 作者 | Ding, Ran ; Zhang, Dandan; Gao, Yingxin; Chen, Xing; Yang, Min
|
| 刊名 | ENVIRONMENTAL TECHNOLOGY
 |
| 出版日期 | 2020-01 |
| 页码 | 1-11 |
| 关键词 | Fenton-coagulation process biologically treated effluent organic contaminants resin fraction distribution molecular weights |
| ISSN号 | 0959-3330 |
| 英文摘要 | It is a challenging environmental issue to develop a cost-efficient approach for the removal of low-concentration refractory organics in industrial wastewater. In this study, the Fenton-coagulation process was utilised to remove the organics from the industrial effluent. The operational conditions of the Fenton-coagulation process were optimised, and then, the molecular weight (MW) and resin fraction distribution of dissolved organic matter (DOM) were investigated before and after the Fenton-coagulation process. The results showed that the efficiency of organic matter removal was affected by the Fe2+/H2O2 molar ratio, pH, and reaction time. The removal rate of chemical oxygen demand (COD) by Fenton-coagulation process reached 37.8% under the following conditions: pH = 4.0 - 5.0, H2O2 concentration = 34 mg/L, Fe2+/H2O2 molar ratio = 1.5, and reaction time = 120 min. The resin fraction distribution results showed that hydrophobic bases (HoB) were almost completely removed, and the removal rate of hydrophobic acids (HoA) reached 58%, while hydrophilic matter (HiM) became the dominant form in the final effluent after the Fenton-coagulation process due to the appearance of hydrophilic charged fractions (HiC). The results were explained by a two-step mechanism (Fenton oxidation and Fe3+ coagulation). According to the molecular weight (MW), 35.7% removal of the main fractions of organic matter with MW < 1 kDa was achieved. Furthermore, a pilot test proved that the final effluent quality after the Fenton-coagulation process conformed to the first class of the A discharge standard of pollutants for municipal wastewater treatment plants in Tianjin. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44909]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Ding, Ran,Zhang, Dandan,Gao, Yingxin,et al. Characteristics of refractory organics in industrial wastewater treated using a Fenton-coagulation process[J]. ENVIRONMENTAL TECHNOLOGY,2020:1-11. |
| APA | Ding, Ran,Zhang, Dandan,Gao, Yingxin,Chen, Xing,&Yang, Min.(2020).Characteristics of refractory organics in industrial wastewater treated using a Fenton-coagulation process.ENVIRONMENTAL TECHNOLOGY,1-11. |
| MLA | Ding, Ran,et al."Characteristics of refractory organics in industrial wastewater treated using a Fenton-coagulation process".ENVIRONMENTAL TECHNOLOGY (2020):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
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