Integrated Quantitative Analysis for Designing of Composting System

Composting is a solid waste treatment method that being widely applied in a larger scale treatment facility due to its advantage on energy consumption and low-level technologies aspects. However, composting that currently being applied to a largescale treatment facility is lack of systematic approaching, which is resulted in adverse effects on quality of final product, time cost, energy cost and spatial cost. Moreover, because of dealing with flammable byproducts from microbiological decomposition reaction under moderately high-temperature, safety of the facilities must be ensured. This research proposes a new approach to analyze systematically the biological decomposition process in the compost pile. Heat generation by the reaction, as well as water movement and oxygen consumption phenomena shall also be captured by proposed coupled mass and energy balance equations for each of those substances. A biological model for microbial decomposition process is proposed mathematically regarding all primary factors affecting the microbial activities. The analysis system is finally applied to designing a better composting system having lower cost, lower energy consumption, environmental friendly and safer than ever.