A Model for Aerobic Biochemical Degradation of Municipal Solid Waste
Based on the principles of electron currents conservation and mass conservation, this paper considers the two kinds biochemical reactions of organic aerobic oxidation and simultaneous nitrification-denitrification under the condition of aerobic degradation of municipal solid waste (MSW). Select rapid degradation cellulose (RDC), slow degradation cellulose (SDC), total sugar, fat, protein, and microorganisms as the limiting substrates, and write an aerobic biochemical reaction stoichiometric equation that can reflect the mass linkages among various substances. First-order kinetic equations were used to describe the kinetic behavior of biodegradable organics in the process of aerobic degradation, meanwhile the effects of temperature, water content, and oxygen concentration on the aerobic degradation rate of organic matter were also considered. The microorganism decay was described using a first-order kinetic equation. A model with a clear physical meaning and capable of simulating the time-varying process of aerobic degradation of MSW has been established. The robustness of the model still requires instance validation.
KeywordsElectron currents conservation Organic aerobic oxidation Simultaneous nitrification denitrification First-order kinetic
The authors would like to acknowledge the financial supports from the National Science Foundation of China (NSFC) (51508504), the major science and technology project of Zhejiang Province (2015C03021), the Fundamental Research Funds for the Central Universities (2017FZA4018).
- 1.Zhou SQ (2005) Biochemical reaction mechanism of landfill leachate simultaneous aerobic and anaerobic biological treatment. J Shihezi Univ (Nat Sci) 23(3):276–279Google Scholar
- 2.McCarty PL (1972) Stoichiometry of biological reactions. Prog Water Technol 7:157–172Google Scholar
- 3.Zhou SQ (2001) Theoretical stoichiometry of biological denitrifications. Environ Technol 22:869–880Google Scholar
- 4.Hoover SR, Porges N (1952) Assimilation of dairy wastes by activated sludge: II. The equation of synthesis and rate of oxygen utilization. Sewage Ind Waste 24(3):306–312Google Scholar
- 5.Symons JM, Mckinney RE (1958) The biochemistry of nitrogen in the synthesis of activated sludge. Sewage Ind Waste 30(7):874–890Google Scholar
- 6.Stombaugh DP, Nokes SE (1996) Development of a biologically based aerobic composting simulation model. Am Soc Agricult Eng 39(1):239–250Google Scholar
- 7.Komilis DP (2006) A kinetic analysis of solid waste composting at optimal conditions. Waste Manag 26:82–91Google Scholar
- 8.Yunmin C (2014) A fundamental theory of environmental geotechnics and its application. Chin J Geotech Eng 36(1):1–46Google Scholar