| Abstrakt: |
In order to investigate the effects of the ventilation conditions on the rural domestic waste composting efficiency at low ambient temperature, three composting groups, which were carried out in self-designed high-efficiency, low-energy-consuming aerobic composting reactor, were compared: hot-blast air group (H), natural air group (N), and stuffiness group (S). The operating parameters of the two ventilation groups include a ventilation rate and frequency of 0.2 m3/min m3 and 20 min/2 h, respectively. In this study, the rates of temperature rose in the group H, N, S were 34.8, 6.4, 11.3 °C/day, respectively, and only the group H reached a maximum temperature of over 50 °C. Moreover, the biochemical analysis, microbial community analysis and the composting product assessment indicated that the reaction degree and treatment effect of the group H were much better than the other two groups. Results showed that the positive effect of H on the efficiency of the composting process was achieved by affecting ventilation conditions. Accordingly, we provided a method to solve the problem regarding temperature limitations of the conventional composting process in cold area. [ABSTRACT FROM AUTHOR] |
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