zno基反应器太阳能光催化降解纺织废水的研究

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-09-01 DOI:10.2166/wpt.2023.141
Jyoti Chaubey, Vineet Jain, Suresh Kumar Singh, Apoorva Jain, H. Arora
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引用次数: 0

摘要

摘要本研究采用光催化技术处理印度拉贾斯坦邦焦特布尔市的纺织废水。焦特布尔有许多纺织工业,对其废水的有效处理一直是该地区的一个主要问题。本研究试图解决这一问题。采用混凝、絮凝、砂滤、光反应器、活性炭过滤等工艺流程,建立了污水处理装置。镀锌铁(GI)板上涂覆zno基半导体,用作光反应器。记录了在光反应器中不同停留时间下,每个工艺操作结束时的水质参数去除率。通过对生化需氧量(BOD)、总溶解固体(TDS)、总悬浮固体(TSS)、ph等水质参数的分析,确定了光反应器的最佳停留时间,在相应的停留时间内,废水的BOD由740 mg/l降至25 mg/l(降低97%),TSS由1430 mg/l降至12 mg/l(降低99%)。TDS的还原效率为25%,处理后的废水pH值由原废水的9.2变为8.4。结果表明,中试处理装置对纺织废水中BOD和TSS的去除效果良好。
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Assessment of solar photocatalytic degradation of textile wastewater by ZnO-based reactors
Abstract The present study deals with treating the textile wastewater of Jodhpur city in Rajasthan, India employing a photocatalysis technique. Jodhpur has a number of textile industries and efficient treatment of its effluents has been a major problem in the region. An effort has been made to resolve this issue through this study. A wastewater treatment unit was setup which involved coagulation and flocculation, sand filter, photoreactor, and activated carbon filter processes. ZnO-based semiconductor, coated on galvanized iron (GI) plates, served as a photoreactor. The water quality parameters removal efficiency at the end of each process operation was recorded for different detention periods in the photoreactor. Water quality parameters analyzed were biochemical oxygen demand (BOD), total dissolved solids (TDS), total suspended solids (TSS), and pH. The optimal retention time for the photoreactor was found and the BOD of the wastewater reduced to 25 from 740 mg/l (97% reduction), and TSS from 1,430 to 12 mg/l (99% reduction) for the corresponding retention time. TDS reduction efficiency was 25% and pH changed from 9.2 in raw wastewater to 8.4 in treated wastewater. Results show that the pilot treatment plant was efficient for BOD and TSS removal from the textile wastewater.
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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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