Combined coagulation-flocculation and sequencing batch reactor with phosphorus adjustment for the treatment of high-strength landfill leachate: Experimental kinetics and chemical oxygen demand fractionation

M. El-Fadel, F. Matar, J. Hashisho

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    6 Scopus citations

    Abstract

    The treatability of high-strength landfill leachate is challenging and relatively limited. This study examines the feasibility of treating high-strength landfill leachate (chemical oxygen demand [COD]: 7,760-11,770 mg/L, biochemical oxygen demand [BOD5]: 2,760-3,569 mg/L, total nitrogen [TN] = 980-1,160 mg/L) using a sequencing batch reactor (SBR) preceded by a coagulation-flocculation process with phosphorus nutritional balance under various mixing and aeration patterns. Simulations were also conducted to define kinetic parameters and COD fractionation. Removal efficiencies reached 89% for BOD5, 60% for COD, and 72% for TN, similar to and better than reported studies, albeit with a relatively lower hydraulic retention time (HRT) and solid retention time (SRT). The coupled experimental and simulation results contribute in filling a gap toward managing highstrength landfill leachate and providing guidelines for corresponding SBR applications.

    Original languageBritish English
    Pages (from-to)591-604
    Number of pages14
    JournalJournal of the Air and Waste Management Association
    Volume63
    Issue number5
    DOIs
    StatePublished - 2013

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