College of Forestry, Beijing Forestry University, Beijing 100083, PR China.
College of Forestry, Beijing Forestry University, Beijing 100083, PR China.
Bioresour Technol. 2017 Nov;243:154-162. doi: 10.1016/j.biortech.2017.06.099. Epub 2017 Jun 20.
Green waste (GW) is an important recyclable resource, and composting is an effective technology for the recycling of organic solid waste, including GW. This study investigated the changes in physical and chemical characteristics during the two-stage composting of GW with or without addition of seaweed (SW, Ulva ohnoi) (at 0, 35, and 55%) and bentonite (BT) (at 0.0, 2.5%, and 4.5%). During the bio-oxidative phase, the combined addition of SW and BT improved the physicochemical conditions, increased the respiration rate and enzyme activities, and decreased ammonia and nitrous oxide emissions. The combination of SW and BT also enhanced the quality of the final compost in terms of water-holding capacity, porosity, particle-size distribution, water soluble organic carbon/organic nitrogen ratio, humification, nutrient content, and phytotoxicity. The best quality compost, which matured in only 21days, was obtained with 35% SW and 4.5% BT.
绿废（GW）是一种重要的可回收资源，堆肥是一种有效的有机固体废物回收技术，包括 GW。本研究调查了在添加或不添加海藻（SW，浒苔）（0、35 和 55%）和膨润土（BT）（0.0、2.5%和 4.5%）的两阶段 GW 堆肥过程中物理化学特性的变化。在生物氧化阶段，SW 和 BT 的联合添加改善了理化条件，提高了呼吸速率和酶活性，降低了氨和氧化亚氮的排放。SW 和 BT 的组合还提高了最终堆肥的持水能力、孔隙率、粒径分布、水溶性有机碳/有机氮比、腐殖化程度、养分含量和植物毒性等方面的质量。在添加 35%SW 和 4.5%BT 的情况下，仅需 21 天即可获得最佳质量的成熟堆肥。
