个人护理产品工业废水处理厂的绩效评估及其对环境的影响

Md. Anowar Hossen, M.G. Mostafa
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引用次数: 0

摘要

个人护理产品(pcp)是一种新兴的污染物(EPs),能够对人体健康产生不利的生理影响。pcp工业产生了大量的EPs,对水生环境构成了重大威胁。本研究在三个不同季节对pcp工业废水的理化参数、EPs、重金属(HMs)和生化废水处理厂(WWTP)的去除率进行了评价。研究还采用加拿大环境部长理事会水质指数(CCME-WQI)、重金属污染指数(HPI)、重金属评价指数(HEI)和风险商指数(RQs)等指标对环境影响进行了评估。分析结果表明,与ECR(2023)标准相比,该污水处理方案对COD和BOD5的降低率分别为15.5%和24.4%,分别达到468.3和249.9 mg/L。对HMs的去除率为Mn (5.7%) <;Cr (10.4%) <;Zn (20.0%) <;Ni (23.5%) <;Cd (59.4%) <;Cu (61.9%) <;Fe (73.1%) <;Pb(88.7%)。所排放的废水中含有大量的EPs和HMs,质量差,不安全,环境风险高。研究发现,生物过程中的酸性pH和低磷酸盐浓度是污水处理厂性能最差的关键决定因素,尽管金属-配体相互作用被认为有一定的贡献。本研究提出的磷酸盐回收概念是简单直接的。研究认为,如果pH、磷酸盐浓度等重要参数保持适当,所研究的生化处理工艺可以有效去除pcp和HMs。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Performance assessment of personal care products industrial effluent treatment plant and its impacts on the environment

Performance assessment of personal care products industrial effluent treatment plant and its impacts on the environment
Personal care products (PCPs) are emerging pollutants (EPs) that are capable of inducing adverse physiological effects on human health. PCPs industries generate a large volume of EPs that pose a significant threat to the aquatic environment. This study assessed PCPs industrial wastewater for physicochemical parameters, EPs, heavy metals (HMs), and the removal efficiency of a biochemical wastewater treatment plant (WWTP) in three different seasons. The study also assessed the environmental impacts using several indices, such as the Canadian Council of Ministers of the Environment water quality index (CCME-WQI), heavy metal pollution index (HPI), heavy metal evaluation index (HEI), and risk quotients index (RQs). The analysis results showed that the WWTP could reduce only 15.5 % and 24.4 % of COD and BOD5, respectively, leaving a very high value of 468.3 and 249.9 mg/L, respectively, compared to the ECR (2023) standard. The removal rates for the HMs were in the order of Mn (5.7 %) < Cr (10.4 %) < Zn (20.0 %) < Ni (23.5 %) < Cd (59.4 %) < Cu (61.9 %) < Fe (73.1 %) < Pb (88.7 %). The discharged effluent contained a number of EPs and HMs, which were poor in quality, unsafe for consumption, and high in environmental risk. Acidic pH and low phosphate concentration in the biological process were found to be the key determining factors for the worst performance of the WWTP, though metal–ligand interaction was assumed to have some contribution. The phosphate recovery concept formulated in this study is assumed to be simple and straight-forward.
The study argued that if some important parameters, such as pH, phosphate concentration, etc. are maintained properly, the studied biochemical treatment process can be effective for removing both PCPs and HMs.
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