Halogenated aliphatic and phenolic disinfection byproducts in chlorinated and chloraminated dairy wastewater: Occurrence and ecological risk evaluation,Journal of Hazardous Materials

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Halogenated aliphatic and phenolic disinfection byproducts in chlorinated and chloraminated dairy wastewater: Occurrence and ecological risk evaluation
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2023-11-10 , DOI: 10.1016/j.jhazmat.2023.132985
You-Wei Jiang ₁ , Gui-Jing Wang ₂ , Shuang Zang ₂ , Yue Qiao ₂ , Hong-Fei Tao ₁ , Qiao Li ₁ , Han Zhang ₂ , Xian-Shi Wang ₂ , Jun Ma ₃

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The increasing demand for dairy products has led to the production of a large amount of wastewater in dairy plants, and disinfection is an essential treatment process before wastewater discharge. Disinfection byproducts (DBPs) in disinfected dairy wastewater may negatively influence the aquatic organisms in receiving water. During chlorine and chloramine disinfection of dairy wastewater, the concentrations of aliphatic DBPs increased from below the detection limits to 485.1 μg/L and 26.6 μg/L, respectively. Brominated and iodinated phenolic DBPs produced during chlor(am)ination could further react with chlorine/chloramine to be transformed. High level of bromide in dairy wastewater (12.9 mg/L) could be oxidized to active bromine species by chlorine/chloramine, promoting the formation of highly toxic brominated DBPs (Br-DBPs), and they accounted for 80.3% and 71.1% of the total content of DBPs in chlorinated and chloraminated dairy wastewater, respectively. Moreover, Br-DBPs contributed 49.9–75.9% and 34.2–96.4% to the cumulative risk quotient of DBPs in chlorinated and chloraminated wastewater, respectively. The cumulative risk quotient of DBPs on green algae, daphnid, and fish in chlorinated wastewater was 2.8–11.4 times higher than that in chloraminated wastewater. Shortening disinfection time or adopting chloramine disinfection can reduce the ecological risks of DBPs.

中文翻译：

氯化和氯化乳品废水中的卤代脂肪族和酚类消毒副产物：发生和生态风险评估

对乳制品的需求不断增长，导致乳品厂产生大量废水，而消毒是废水排放前必不可少的处理过程。消毒乳制品废水中的消毒副产品（DBP）可能会对受水中的水生生物产生负面影响。在乳制品废水的氯和氯胺消毒过程中，脂肪族 DBPs 的浓度分别从检测限以下增加到 485.1 μg/L 和 26.6 μg/L。氯（am）化过程中产生的溴化和碘化酚醛 DBP 可以进一步与氯/氯胺反应进行转化。乳品废水中高浓度的溴化物（12.9 mg/L）可被氯/氯胺氧化为活性溴，促进剧毒溴化 DBP （Br-DBPs）的形成，分别占氯化和氯胺化乳品废水中 DBPs 总含量的 80.3% 和 71.1%。此外，Br-DBP 分别对氯化和氯化废水中 DBP 的累积风险商贡献了 49.9-75.9% 和 34.2-96.4%。氯化废水中绿藻、水蚤和鱼类的 DBP 的累积风险商是氯化废水的 2.8-11.4 倍。缩短消毒时间或采用氯胺消毒可以降低 DBP 的生态风险。

更新日期：2023-11-10

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