Gholampour Arbastan H, Gitipour S
School of Environment, College of Engineering, University of Tehran, No. 25, Azin St, 141556135 Tehran, Iran.
Int J Environ Sci Technol (Tehran). 2022;19(5):4407-4420. doi: 10.1007/s13762-022-04063-5. Epub 2022 Apr 6.
Household hazardous waste (HHW) includes approximately 1% of municipal solid waste (MSW), which is related to the lack of efficient separate collection schemes co-disposed with MSW in many countries worldwide. In this research, the effect of HHW diversion on leachate quality and consequent reduction in risks to the environment and human health was investigated. In this regard, physicochemical parameters of MSW leachate samples with and without hazardous fraction were characterized. Next, leachate pollution index (LPI) and associated risks were assessed. The results showed that the source separation of HHW decreases the LPI value by 13.48% and improves the potential of leachate for biological treatment, leading to a reduction in leachate treatment costs and complexity. Based on risk assessment results, HHW diversion could lower cancer risks of organic compounds and heavy metals to acceptable levels for adults and children. Moreover, by the source-separating of HHW, hazard indices for aquatic and terrestrial bioassays reduced by 41.5 and 36%, respectively. Furthermore, despite the comparatively low generated amount of HHW, this fraction should be emphasized due to its unintended effects for public health and the environment.
家庭危险废物（HHW）约占城市固体废物（MSW）的1%，这与全球许多国家缺乏高效的分类收集计划有关，HHW与MSW一起被混合处置。在本研究中，调查了HHW分流对渗滤液质量的影响以及随之而来的对环境和人类健康风险的降低。在这方面，对含有和不含有危险组分的MSW渗滤液样品的理化参数进行了表征。接下来，评估了渗滤液污染指数（LPI）及相关风险。结果表明，HHW的源头分离使LPI值降低了13.48%，并提高了渗滤液的生物处理潜力，从而降低了渗滤液的处理成本和复杂性。基于风险评估结果，HHW分流可将有机化合物和重金属对成人和儿童的癌症风险降低到可接受水平。此外，通过对HHW进行源头分离，水生和陆生生物测定的危害指数分别降低了41.5%和36%。此外，尽管HHW的产生量相对较低，但由于其对公众健康和环境的意外影响，仍应予以重视。
