期刊名称：Pakistan Journal of Analytical & Environmental Chemistry
印刷版ISSN：1996-918X
电子版ISSN：2221-5255
出版年度：2017
卷号：18
期号：2
页码：136-142
DOI：10.21743/pjaec/2017.12.14
语种：English
出版社：National Centre of Excellence in Analytical Chemsitry
摘要：Paper manufacturing industry is characterized by large amount of water consumption and hence high rate of wastewater generation which is concern to water pollution. This study considers the characterization of paper mill effluents for recovery in the form of Total Suspended Solids (TSS) in relation to decrease in organic waste in the form of Biochemical Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD). For this purpose sedimentation and coagulation were applied. Coagulation was performed using “Alum” to check its efficiency. The effects of dose rate and settling time of solids were observed for TSS,BOD5 and COD removal. The average concentrations of TDS (860-881 mg/L),TSS (822-836 mg/L),BOD (261-275 mg/L) and COD (519-550 mg/L) were determined above the permissible limits. By comparing the level of these parameters after sedimentation a visible decrease was observed. TDS,TSS,COD and BOD5 decrease by 19%,37%,17.3% and 18%,respectively. In coagulation treatment the decrease was 84%,89%,86% respectively for TSS,COD and BOD5. The study observed maximum recovery in the form TSS (84%) along with BOD5 and COD. Therefore,coagulation treatment for paper recycling mill is recommended..
