电絮凝法处理纺织废水毒性评价

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-04-06 DOI:10.2166/wpt.2023.049
Jéssica Martins, Eliezer Fares Abdala Neto, J. P. Ribeiro, A. Lima, F. W. Sousa, A. G. Oliveira, C. Vidal, R. Nascimento
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引用次数: 0

摘要

纺织废水很复杂,很难选择有效的处理方法。本研究评价了脉冲电流(PC)电凝聚(EC)对莴苣织物废水的毒性。EC是在分批模式下使用304不锈钢电极进行的。监测的参数包括pH、温度、颜色和浊度。此外,对工艺残留物进行能量色散X射线荧光(XFR)以测定存在的元素。该工艺实现了色度和浊度的比例去除,去除率分别为97至99%和74至85%。在50分钟的时间推移内,化学需氧量(COD)和总氮去除率分别为81%和49%。该工艺产生了约1.7千克固体残渣/m3处理过的流出物。XFR结果显示残留物中主要存在Fe、Cr和Ni离子以及氯。发芽指数(GI)和相对生长值显示EC略微降低了出水毒性,表明需要补充处理。
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Evaluation of the toxicity of textile effluent treated by electrocoagulation
Textile effluents are complex, making it difficult to choose an effective treatment. The textile effluent toxicity in Lactuca sativa after pulsed current (PC) electrocoagulation (EC) was evaluated in this study. The EC was performed using 304 stainless steel electrodes in batch mode. Parameters monitored included pH, temperature, color, and turbidity. Additionally, the process residue was subjected to energy-dispersive X-ray fluorescence (XFR) to determine the elements present. The process achieved proportional color and turbidity removal ranging from 97 to 99% and from 74 to 85%, respectively. Chemical oxygen demand (COD) and total nitrogen removal were 81 and 49%, respectively, in a 50 min time-lapse. The process generated approximately 1.7 kg of solid residue/m3 treated effluent. The XFR results revealed the presence, mainly, of Fe, Cr, and Ni ions in the residue, as well as chlorine. The germination index (GI) and relative growth values showed that EC reduced effluent toxicity slightly, indicating the need for complementary treatment.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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