Effect of Different Microbial Blends on High Temperature Composting Maturity Process of Tobacco Fine Waste

Under an aerobic condition, high temperature composting using tobacco fine, an industry waste, as the basic material was carried out to study the effects of different microbial blends, Faby, Dingzhi and Rongfeng on composting process and maturity. The results showed that, adding the microbial blends shortened the time of reaching high temperature, extended high temperature sustaining time, accelerated pH increasing and the ratio of C/N reducing, increased N mineralization and ammonium decreasing, accelerated the decomposing process. The highest temperature was 45 ℃ in pure tobacco fine compost. The high temperature reaching time (50 ℃) in the composts adding Faby, Dingzhi and Rongfeng was 7, 14 and 15 d, respectively and the high temperature decomposing duration was 14, 7 and 6 d, respectively. The content of NO3-N was higher by 18.7%, 12.2% and 4.7% than that of pure tobacco fine compost, respectively. Microbial blend Faby showed better effects on high temperature compost maturity than other two microbial blends.