Teagasc, Pig Development Department, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland.
Bioresour Technol. 2011 Jul;102(14):7131-8. doi: 10.1016/j.biortech.2011.04.066. Epub 2011 Apr 24.
The aim of this study was to investigate the composting of separated pig manure solids with or without a variety of bulking agents at a low initial C/N ratio (12.5-23.3). Compost stability was investigated using an oxygen uptake rate (OUR) test and compost maturity was investigated using a germination index test. All treatments showed typical patterns of compost temperature. Temperatures above 60°C were achieved by Day 2, followed by a thermophilic phase (50-60°C), which lasted for 1 to 2 weeks followed by a cooling phase. The stability of one of treatments which did not contain any bulking agent - OUR of 25 mmol O(2) kg(-1) OM hour(-1) - was negatively affected by its initial high water content (69%). The addition of a bulking agent and initial water content below 60% were necessary to compost the separated solid fraction of pig manure at a low initial C/N ratio.
本研究旨在探索在低初始 C/N 比（12.5-23.3）下，是否添加各种膨松剂对猪粪固体进行堆肥。使用耗氧速率（OUR）试验研究堆肥稳定性，使用发芽指数试验研究堆肥成熟度。所有处理均表现出典型的堆肥温度模式。第 2 天达到 60°C 以上的温度，随后是高温期（50-60°C），持续 1 至 2 周，然后是冷却期。其中一种未添加膨松剂的处理——OUR 为 25 mmol O(2) kg(-1) OM hour(-1)——由于初始高含水量（69%），其稳定性受到负面影响。添加膨松剂和初始含水量低于 60%是在低初始 C/N 比下堆肥猪粪固体分的必要条件。
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