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| 紫外/氯工艺对水中微囊藻毒素的去除 | |
| 引用本文： | 王洪桥,白玉.紫外/氯工艺对水中微囊藻毒素的去除[J].吉林大学学报(地球科学版),2022,52(1):222-228. |
| 作者姓名： | 王洪桥 白玉 |
| 作者单位： | 1.吉林农业大学经济管理学院，长春130118 2.吉林农业大学中药材学院，长春130118 3.长春市城市科学研究所, 长春130042 |
| 摘 要： | 水体富营养化导致藻类的爆发进而引起藻毒素的释放。微囊藻毒素(MCLR)是最为常见的藻毒素，具有很强的毒性，对人类健康具有潜在危害。本文采用紫外/氯组合工艺，研究其对水中微囊藻毒素的控制效果。结果表明：紫外/氯共同作用下能够产生·Cl、·OH等活性自由基，具有协同降解MCLR的作用，30 min即可实现MCLR的完全去除，其降解效率随着氯投加质量浓度的增加而升高。在酸性及中性条件下，pH的变化对紫外/氯降解MCLR没有影响；在碱性条件下，MCLR的降解效率随pH的升高显著降低，pH升高至9时，30 min MCLR的降解效率仅为41.3%。此外，不同的水样来源和水质特点对紫外/氯联合降解MCLR的效率具有显著影响，纯水、西湖水及水厂滤后水的30 min去除率分别为99.5%，40.2%及63.3%。MCLR 的降解效率随腐殖酸质量浓度增大而降低，在60 min作用时间内，不含腐殖酸水样的MCLR去除率高达99.5%，当腐殖酸质量浓度增加到10 mg/L时，MCLR去除率仅为45.3%。 |
| 关 键 词： | 紫外 氯 藻毒素 腐殖酸 降解 |
| 收稿时间： | 2021-01-28 |
Removal of Microcystins from Water by UV/Chlorine Process |
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| Wang Hongqiao,Bai Yu.Removal of Microcystins from Water by UV/Chlorine Process[J].Journal of Jilin Unviersity:Earth Science Edition,2022,52(1):222-228. | |
| Authors: | Wang Hongqiao Bai Yu |
| Institution: | 1. College of Economics and Management, Jilin Agricultural University, Changchun 130118, China 2. College of Traditional Chinese Medicine, Jilin Agricultural University, Changchun 130118, China 3. Changchun Institute of Urban Science，Changchun 130042, China |
| Abstract: | Eutrophication leads to the outbreak of algae and the release of algal toxins into water. Microcystins (MCLR), the most common algal toxin, shows high potential toxicity to human health. In this study, the combination of ultraviolet and chlorine was applied to investigate the degradation ability of MCLR. The results show that a synergetic effect between UV and chlorine is produced, and MCLR can be completely removed in 30 min. The produce of active radicals such as ·Cl and ·OH during the UV/chlorine process is the main reason for the synergetic effect. In the test, the MCLR removal efficiency increased with the increase of chlorine dosage. While pH had negligible effect on MCLR removal during UV/chlorine process under neural and acid conditions. However, an effect was observed that the remove efficiency decreased significantly with pH increase in alkaline conditions, the remove efficiency was only 41.3% at pH 9. The water matrix can significantly affect MCLR degradation: the degradation percentage of pure water, filtrated water, and water treatment plant influent was 99.5%, 40.2%, and 63.3%, respectively. The degradation efficiency of MCLR decreased with the increase of humic acid concentration: the removal of MCLR without humic acid was as high as 99.5% within 60 minutes; while the removal of MCLR was only 45.3% with 10 mg/L humic acid. |
| Keywords: | ultraviolet chlorine algal toxin humic acid degradation |
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