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Title:	Factorial design and optimization of landfill leachate treatment using aeration and tannin coagulation processes
Authors:	Banch Tawfiq J. H. (P85931)
Supervisor:	Marlia Mohd. Hanafiah, Assoc. Prof. Dr.
Keywords:	Refuse and refuse disposa Landfill leachate treatment Coagulation process. Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	18-Dec-2020
Description:	Landfill leachate contains high levels of pollutants that can potentially contaminate the surrounding environment. Coagulation-flocculation processes are effective and economically suitable for leachate treatment. This study aims, firstly, to characterize leachate from a processing system and its impact on the Ampar Tenang landfill. The second aim is to examine the performance of combined stabilized leachate and POME to treat landfill leachate using aeration. The third aim is to investigate the efficiency of tannin in removing pollutants from leachate and compare the performance of different treatment processes. The characterization of stabilized leachate from the collection, aeration, and stabilization ponds at the ATCL was conducted to determine the physicochemical characteristics of 21 parameters. Leachate treatment consists of two main processes. The first process is leachate/POME treatment (LP), which includes the preliminary experiment and optimization of treatment efficiency of leachate/POME for COD, TSS, color, and NH3-N. The second process is leachate treatment using tanninbased natural coagulant (LT), which includes the preliminary experiment and optimization of treatment efficiency for pH and tannin dosage for the same selected parameters. Central composite design (CCD) was used to investigate and optimize the effects of tannin dosage and pH, as well as the POME/leachate ratio and aeration time on four selected parameters. The combination of LP and LT treatment includes two integrated treatment processes: leachate/POME followed by leachate/tannin treatment (LP/LT), and leachate/tannin followed by leachate/POME treatment (LT/LP). Statistical evaluation and comparison were conducted for the physicochemical parameters in four treatment processes (LP, LT, LP/LT, and LT/LP). Three clusters were found to entirely separate the collection pond, whereas the two ponds were clustered with groundwater samples, and the third cluster was for the surface water. For the LP treatment, the optimum removal efficiencies for COD, TSS, color, and NH3-N were 87.15%, 65.54%, 52.78%, and 91.75%, respectively, at the POME/leachate ratio of 188.32 ml/811.68 ml and 21 days of aeration time. For LT treatment, the highest COD, TSS, color, and NH3-N removals were 52.5%, 53.5%, 91.39%, and 64%, respectively, with a tannin dosage of 0.73 g at a pH of 6 and a duration of 45 min. For different treatment processes, the highest removal efficiency for the targeted physicochemical parameters was achieved using the LP/LT treatment. Post-treatment can be considered for further organic and ammonia removal.,Ph.D
Pages:	181
Call Number:	TD791.B336 2020 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Science and Technology / Fakulti Sains dan Teknologi

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