title: Search for a new economic optimum in the management of household waste in Tiaret city (western Algeria).
abstract: In household waste matters, the objective is always to conceive an optimal integrated system of management, where the terms 'optimal' and 'integrated' refer generally to a combination between the waste and the techniques of treatment, valorization and elimination, which often aim at the lowest possible cost. The management optimization of household waste using operational methodologies has not yet been applied in any Algerian district. We proposed an optimization of the valorization of household waste in Tiaret city in order to lower the total management cost. The methodology is modelled by non-linear mathematical equations using 28 variables of decision and aims to assign optimally the seven components of household waste (i.e. plastic, cardboard paper, glass, metals, textiles, organic matter and others) among four centres of treatment [i.e. waste to energy (WTE) or incineration, composting (CM), anaerobic digestion (ANB) or methanization and landfilling (LF)]. The analysis of the obtained results shows that the variation of total cost is mainly due to the assignment of waste among the treatment centres and that certain treatment cannot be applied to household waste in Tiaret city. On the other hand, certain techniques of valorization have been favoured by the optimization. In this work, four scenarios have been proposed to optimize the system cost, where the modelling shows that the mixed scenario (the three treatment centres CM, ANB, LF) suggests a better combination of technologies of waste treatment, with an optimal solution for the system (cost and profit).
authors.affiliation: Laboratory of Environmental Science and Valorization, University of Mostaganem, Algeria.
authors.forename: M
authors.initials: M
authors.lastname: Asnoune
authors.affiliation: Laboratory of Environmental Science and Valorization, University of Mostaganem, Algeria.
authors.forename: F
authors.initials: F
authors.lastname: Abdelmalek
authors.affiliation: Laboratory of Environmental Science and Valorization, University of Mostaganem, Algeria.
authors.forename: A
authors.initials: A
authors.lastname: Djelloul
authors.affiliation: Research Center in Signal, Informatic and Automatic LAGIS, UMR CNRS 8219, Central School, University of Lille, France.
authors.forename: K
authors.initials: K
authors.lastname: Mesghouni
authors.affiliation: Laboratory of Environmental Science and Valorization, University of Mostaganem, Algeria a.addou@univ-mosta.dz.
authors.forename: A
authors.initials: A
authors.lastname: Addou
mesh_terms: D000462:Algeria; D056804:Biofuels; D002947:Cities; D003365:Costs and Cost Analysis; D005191:Family Characteristics; D017745:Incineration; D018803:Models, Economic; D008962:Models, Theoretical; D059027:Recycling / Q000191:economics; D012037:Refuse Disposal / Q000191:economics* / Q000379:methods*; D012987:Soil; D062611:Solid Waste / Q000032:analysis* / Q000191:economics / Q000706:statistics & numerical data; D064091:Waste Disposal Facilities
chemical_list: D056804:Biofuels; D012987:Soil; D062611:Solid Waste
keywords: Household waste; Tiaret; economic optimum; management; treatment; valorization; western Algeria