Abstract
Paper manufacturing industry is characterized by large amount of water consumption and hencehigh rate of wastewater generation which is concern to water pollution. This study considers thecharacterization 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) andChemical 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 andsettling time of solids were observed for TSS, BOD5and COD removal. The averageconcentrations ofTDS (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 theseparameters after sedimentation a visible decrease was observed. TDS, TSS, COD and BOD5decreaseby 19%, 37%, 17.3% and 18%,respectively. In coagulation treatment the decrease was84%, 89%, 86% respectively for TSS, COD and BOD5. The study observed maximum recovery inthe form TSS (84%) along with BOD5and COD. Therefore, coagulation treatment for paperrecycling mill is recommended.
Mohammad Nafees, Nazish Huma Khan, Nimra Noor, Sadaf , Farooq Ahmad. (2017) Reduction in Organic Waste through Recovery from WastePaper Recycling Mill, Pakistan Journal of Analytical & Environmental Chemistry, Volume 18, Issue 2.
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