【摘要】 【目的】评估福建省规模化养猪场利用沼气工程处理粪便产生的温室气体减排效益,以推动规模化养猪场沼气工程建设,实现生猪养殖业清洁生产。【方法】根据国际通用的温室气体减排量计算方法,以2010年和2015年为例,计算福建省规模化养猪场粪便资源量及沼气生产潜力,评估粪便资源全部用于沼气工程建设所带来的减排效益。【结果】2010年和2015年福建省规模化养猪场排泄物干物质总量分别为169.93万t和163.29万t,其产沼气潜力分别为7.14亿m³和6.86亿m³。假设规模化养猪场粪便所产沼气全部用于替代薪柴,则分别可替代薪柴245.42万t和235.84万t,减少CO₂排放量分别为268.74万t和258.25万t;假设规模化养猪场粪便所产沼气全部用于替代煤炭,则分别可替代煤炭130.85万t和125.74万t,减少CO₂排放量110.89万t和106.56万t。如果养猪场粪便全部用于沼气工程,则分别可减少CH₄排放3.59万t和3.45万t。【结论】沼气工程在有效处理禽畜粪便的同时生产了优质燃料,沼气替代传统能源减少了CO₂排放,禽畜粪便厌氧消化减少了CH₄排放,带来了显著的社会经济及环境效益。更多还原

【Abstract】 【Objective】Reduction on greenhouse gas（GHG）emissions at large pig farms by treatment converting fecal waste to biogas for an environmentally friendly hog industry in Fujian was reviewed.【Method】Based on the internationally accepted method for calculating GHG emission reduction and the 2010 and 2015 data,the amounts of manure and biogas production at large pig farms in the province were obtained for the analysis.The estimated benefits brought about by the emission reduction through the practice were discussed.【Result】The total amount of excreta dry matters from the pig farms was 1.699 3 million tons in 2010 and 1.632 9 million tons in 2015 representing the production potentials of 714 million m³ and 686 million m³ biogas,respectively.If the biogas produced were to be used to replace firewood,it would have been 2.454 2 million t and 2.358 4 million t of firewood saved for the two years,respectively.And the resulting CO₂ emissions reduced would have amounted to 2.687 4 million t in 2010 and 2.582 5 million t in 2015.The same presumed biogas productions would translate to be 1 308500 tand 1 257 400 tof coal,or 1 108 900 tand 1 065 600 tof CO₂ emissions for the years of 2010 and 2015,respectively.By converting pig manure to biogas,the CH₄ emissions could have been reduced by 35 900 tin 2010 and 34 500 tin 2015.【Conclusion】Using biogas produced from livestock waste could conceivably generate a high quality fuel to replace the traditional energy sources and effectively reduce CO₂ emissions.Anaerobic digestion of the waste material also mitigated CH₄ emissions resulting in significant social,economic and environmental benefits.更多还原