Abstract：
With the increase of organic solid wastes (OSWs), current waste management practices, such as landfill, incineration, and windrow composting, have shown weaknesses in both resource recycling and environmental protection. Co-composting has been used to achieve nutrient and carbon recycling but is accused of high ammonia emission and low degradation efficiency. Therefore, this study developed a precision co-composting strategy (S3, which adds functional bacteria generated from food processing waste to a co-composting system) and compared it with the current OSW treatment strategy (S1) and traditional co-composting strategy (S2) from a life cycle assessment (LCA) perspective. The results showed that compared with S1, the eco-efficiency increased by 31.3% due to the higher economic profit of S2 but did not directly reduce the environmental cost. The addition of bacterial agents reduced ammonia emissions and shortened composting time, so compared with S1 and S2, the environmental cost of S3 was reduced by 37.9 and 43.6%, while the economic profit increased by 79.8 and 24.4%, respectively. The changes in environmental costs and economic benefits resulted in a huge improvement of S3\'s eco-efficiency, which was 189.6 and 121.7% higher than S1 and S2. Meanwhile, the adoption of S3 at a national scale in China could reduce the emission of 1,4-dichlorobenzene by 99.9% compared with S1 and increase profits by 6.58 billion USD per year. This study proposes a novel approach that exhibits high eco-efficiency in the treatment of OSWs.
摘要：
随着有机固体废物(OSW)的增加，当前的废物管理实践，比如垃圾填埋场，焚化,和windrow堆肥，在资源回收和环境保护方面都表现出弱点。共堆肥已用于实现养分和碳回收，但被指控氨排放量高且降解效率低。因此,本研究制定了精准共堆肥策略(S3,将食品加工废弃物产生的功能性细菌添加到共堆肥系统中),并从生命周期评估(LCA)的角度将其与当前的OSW处理策略(S1)和传统的共堆肥策略(S2)进行了比较.结果表明，与S1相比，由于S2的经济利润较高，生态效率提高了31.3％，但并未直接降低环境成本。细菌剂的添加减少了氨的排放，缩短了堆肥时间，因此，与S1和S2相比，S3的环境成本分别降低了37.9和43.6%，经济利润增长了79.8%和24.4%，分别。环境成本和经济效益的变化导致了S3的生态效率的巨大提高，比S1和S2高189.6和121.7%。同时,在全国范围内采用S3可以使1,4-二氯苯的排放量比S1减少99.9％，每年增加65.8亿美元的利润。这项研究提出了一种新颖的方法，在OSW的治疗中表现出很高的生态效率。
