Efficiency of Co-compost of Cinnamomum Camphora Branch Compost and Shield Decement
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S141.4;X713

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    Abstract:

    [Objective] Two kinds of municipal solid waste, shield decement and Cinnamomum camphora branch, were disposed and utilized to the maximum at the same time, in order to promote the application of landscaping waste and urban shield sludge recycling products.[Methods] The products of shield decement and Cinnamomum camphora branch compost were treated with a proportion of 25:1, 30:1, 20:1, 25:1, respectively. Proportion (quality ratio) was used to prepare grade 1 and grade 2 lawn planting soil and grade 1 and grade 2 flower bed planting soil. The degradation characteristics of AES during composting and the nutrient element content of composting fermentation products and pot experiments were then investigated.[Results] The compost products of decement and composting of Cinnamomum camphora branches with the ratios of 25:1, 30:1, 20:1 and 25:1 (mass ratio) for 20 d met the requirements of grade Ⅰ and Ⅱ lawn planting soil and grade Ⅰ and Ⅱ flower bed planting soil in "green planting soil CJ/T340-2016". Co-composting significantly promoted the degradation of AES, which was the main pollutant in shield decement, and the content of AES surfactant in the products after 20 days of compost decreased by more than 75.24%. The results of pot experiment showed that the germination rate of Manila seeds planted in primary and secondary turf soil was 92% and 86%, respectively. The survival rate of transplanted azalea in first-grade and second-grade flower bed soil was 100%.[Conclusion] The composting product of Cinnamomum camphora branch mixed with shield demulsification is not only beneficial to the environment friendly disposal of shield demulsification, but also can be reused after composting, promotes the degradation of AES in shield demulsification mud, and reduces the harm of AES in shield demulsification to the environment.

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杨海君,金红玉,肖为,肖路,刘亚宾,谭菊.香樟树枝堆肥产物与盾构脱水泥共堆肥的效果[J].水土保持通报英文版,2020,40(2):188-192

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History
  • Received:September 24,2019
  • Revised:December 06,2019
  • Adopted:
  • Online: May 14,2020
  • Published: