Integrated Leachate Treatment Technology

Integrated Leachate Treatment Technology

Zawawi Daud (Universiti Tun Hussein Onn Malaysia, Malaysia) and Halizah Awang (Universiti Tun Hussein Onn Malaysia, Malaysia)
Copyright: © 2020 |Pages: 17
DOI: 10.4018/978-1-7998-1210-4.ch009

Abstract

In this chapter, the performance of combined treatment of municipal landfill leachate is reviewed. Although individual physico-chemical treatments are suitable for the removal of heavy metals and hydrolyzation of some organic compounds, a combination of two physico-chemical treatments or physico-chemical and biological is required for optimum treatment of stabilized landfill leachate. A combination of two physico-chemical treatments can give optimum results in removal of recalcitrant organic compounds from stabilized leachate, as reflected by a significant decrease of the COD values after treatment. On the other hand, a combination of physico-chemical and biological treatments is required to achieve effective removal of NH3-N and COD with a substantial amount of biodegradable organic matter. In many cases, physico-chemical treatments are suitable for pre-treatment of stabilized leachate. The objective of this paper is to highlight various types of integrated leachate treatments as it has been difficult to get optimum efficiency from single approached treatment.
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Physical And Chemical Treatments

Physical and chemical processes include reduction of suspended solids, colloidal particles, floating material, color, and toxic compounds (Renou et al., 2008). Chemical and physical methods, such as chemical oxidation, adsorption, chemical precipitation, coagulation-flocculation, sedimentation/flotation and air stripping were applied successfully for the treatment of landfill leachate (Gandhimathi et al., 2013; Kurniawan et al., 2009; Papastavrou et al., 2009). The combination of the above process reduces the drawbacks of each single process. (Gandhimathi et al., 2013; Zazouli et al., 2012; Papastavrou et al., 2009).

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