title: Effect of co-managing organic waste using municipal wastewater and solid waste treatment systems in megacities.
abstract: A model was developed to calculate the mass and heat balances of wastewater and municipal solid waste treatment plants when these plants operate either separately or together with a mutual dependence on mass and energy. Then the energy consumption, life cycle costs (LCCs), greenhouse gas (GHG) emissions and effluent quality were evaluated under various scenarios to identify the most effective co-management and treatment system. The results indicated that co-digestion of kitchen waste and sewage sludge, and their co-combustion reduced LCCs by 30%, energy consumption by 54% and GHG emissions by 41% compared to the base case. However, co-digestion increased the total nitrogen load in the wastewater treatment plant effluent. Even if an advanced wastewater treatment system was applied to improve total nitrogen concentration, the above indicators were affected but still reduced compared to the base case. Therefore, it was confirmed that the integrated system was beneficial for megacities.
authors.affiliation: Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8540, Japan E-mail: takaoka.masaki.4w@kyoto-u.ac.jp.
authors.forename: Masaki
authors.initials: M
authors.lastname: Takaoka
authors.affiliation: Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8540, Japan E-mail: takaoka.masaki.4w@kyoto-u.ac.jp.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Oshita
authors.affiliation: Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8540, Japan E-mail: takaoka.masaki.4w@kyoto-u.ac.jp.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Iwamoto
authors.affiliation: Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8540, Japan E-mail: takaoka.masaki.4w@kyoto-u.ac.jp.
authors.forename: Tadao
authors.initials: T
authors.lastname: Mizuno
mesh_terms: D002947:Cities; D003198:Computer Simulation; D005740:Gases; D008962:Models, Theoretical; D018505:Waste Management / Q000191:economics; D014866:Waste Products
chemical_list: D005740:Gases; D014866:Waste Products