分散式堆肥计划中堆肥的理化和生物学特性。
Physico-chemical and biological characteristics of compost from decentralised composting programmes.
机构信息
Dept. of Physical Chemistry and Chemical Engineering I, University of A Coruña, Galiza, Spain; Division of Biology and Conservation Ecology, School of Science and the Environment, Manchester Metropolitan University, UK.
Division of Biology and Conservation Ecology, School of Science and the Environment, Manchester Metropolitan University, UK.
出版信息
Bioresour Technol. 2015 Dec;198:520-32. doi: 10.1016/j.biortech.2015.09.034. Epub 2015 Sep 18.
Composts that originated from small-scale composting programmes including home, community and canteen waste composters were studied. Heavy metals concentration indicated compliance with current regulations for conventional and organic agriculture. Compost from canteen waste showed high organic matter content (74% VS), while community (44 ± 20% VS) and home composts (31 ± 16% VS) had moderate levels. N content increased from home compost (1.3 ± 0.9% dm) to community (2.0 ± 0.9%) and canteen compost (2.5-3.0%) while P content ranged from 0.4% to 0.6% dm. C/N, absorbance E4/E6 and N-NH4(+)/N-NO3(-) ratios as well as respiration index indicated well-stabilized final products. Culturable bacterial and fungal cfu linkage to composting dynamics were identified and higher diversity of invertebrates was found in the smaller scale static systems. With similar process evolution indicators to industrial systems, overall results support the sustainability of these small-scale, self-managed composting systems.
研究了源自小规模堆肥计划的堆肥，包括家庭、社区和食堂废物堆肥器。重金属浓度表明符合传统和有机农业的现行法规。食堂废物堆肥的有机质含量较高（74%VS），而社区（44 ± 20%VS）和家庭堆肥（31 ± 16%VS）含量适中。氮含量从家庭堆肥（1.3 ± 0.9%干物质）增加到社区（2.0 ± 0.9%）和食堂堆肥（2.5-3.0%），而磷含量范围为 0.4%至 0.6%干物质。C/N、吸光度 E4/E6 和 N-NH4（+）/N-NO3（-）比值以及呼吸指数表明最终产品已充分稳定。确定了可培养细菌和真菌 CFU 与堆肥动力学的联系，并在较小规模的静态系统中发现了更高多样性的无脊椎动物。总体结果支持这些小规模、自我管理的堆肥系统的可持续性，其具有类似的工艺进化指标。
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