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Yang, Qingnan
- Evaluation of the Maturity of MSW Second-Time Compost and Its Effect on the Growth of Amorpha fruticosa and Festuca arundinacea
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1 Beijing Forestry University, Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing, 100083, CN
1 Beijing Forestry University, Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing, 100083, CN
Source
Nature Environment and Pollution Technology, Vol 15, No 4 (2016), Pagination: 1117-1124Abstract
This paper explores 9 different composting schemes to determine the optimal strategy to improve the compost maturity of municipal solid waste. The second-time compost, in the volume ratios of 0%, 25%, 50%, 75%, 100%, was used to plant Amorpha fruticosa and Festuca arundinacea. We measured emergence time and plant growth to determine the effect of the compost on the growth of Amorpha fruticosa and Festuca arundinacea. After fuzzy analysis, we found that maturity of T5 and T6 is the best, and compost maturity was optimal resulting from the process with no additional water, adding agents every 9 days, and turning every 3 days with an initial C/N of 20. The main factors affecting the degree of maturity are the initial C/N, followed by water situation, inoculated case, and turning frequency. The second-time compost allows reduction of soil heavy metal content and is conducive to Amorpha fruticosa survival and Festuca arundinacea germination. However, the high adding proportion of second-time compost delays the survival and emergence time, and also makes higher stems ischolar_main ratio of Festuca arundinacea. The 50% and 75% proportion has higher seedling height and ground diameter growth of Amorpha fruticosa. The seedling height of Festuca arundinacea is better in the 75% proportion.Keywords
Second-Time Compost, Maturity, Fuzzy Analysis, Plant Growth Index.Full Text
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