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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yang, Ping Ji, Qingqing Yuan, Yue Lai, Bo Zhou, Yuexi |
| Description | Country affiliation: China Author Affiliation: Ji Q ( Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China.); Yuan Y ( Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China.); Lai B ( Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China. Electronic address: laibo@scu.edu.cn.); Yang P ( Department of Environmental Science and Engineering, School of Architecture and Environment, Sichuan University, Chengdu 610065, China.); Zhou Y ( Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.) |
| Abstract | To remove the toxic and refractory pollutants in the phthalonitrile resin wastewater and improve its biodegradability, a combined process (i.e., CaCl2+AA+Fe/Cu/air) was developed to pretreat this wastewater obtained from a phthalonitrile resin manufacturing plant in southwestern China. First, CO3(2-) was precipitated and removed by adding CaCl2. Furthermore, its ultra-high concentrated NO2(-) (22.7±0.1 g/L) was reduced into N2 by adding amidosulphonic acid (AA). Meanwhile, two control experiments were setup to confirm the superiority of the combined process (i.e., CaCl2+AA). Subsequently, the wastewater was further treated by Fe/Cu/air process after the removal of CO3(2-) and NO2(-). The results suggest that the developed method not only could effectively remove the ultra-high concentrated CO3(2-) (>99%) and NO2(-) (>99%), but also could obtain high COD (58.8%) and colority (95.2%) removal efficiencies. Meanwhile, B/C ratio of this wastewater increased from 0.19 to 0.45, which suggests the biodegradability also was improved significantly. Finally, the high treatment efficiency was mainly attributed to the synergistic effects of CaCl2, AA and Fe/Cu/air. Therefore, the combined process is a promising pretreatment process for the ultra-high concentrated wastewater from phthalonitrile resin manufacturing. |
| ISSN | 03043894 |
| Journal | Journal of Hazardous Materials |
| Volume Number | 308 |
| e-ISSN | 18733336 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-05-05 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Waste Management and Disposal Health, Toxicology and Mutagenesis Environmental Engineering |
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