Life Cycle Assessment of a Commercial-Scale Freshwater Aquaponic System
Life Cycle Assessment of a Commercial-Scale Freshwater Aquaponic System
复制标题
商业规模淡水鱼菜共生系统的生命周期评估
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
A. TrotzMaya
中科院分区：
文献类型：
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作者：
E. BoxmanSuzanne;ZhangQiong;BaileyDonald;A. TrotzMaya
摘要通过水培水产养殖实践，应用生命周期评价方法评价鱼和植物同时生产对环境的影响。在水培中，水培植物生产取代了循环水养殖系统(RAS)中维持水质所需的微生物硝化和水交换的传统水处理过程。系统扩展法被用来评估回收固体的联合生产、工厂生产和水处理可能避免的负担。结果表明，电力和饲料是造成环境影响的主要因素。影响评估结果对电力投入的变化高度敏感，表明电力的小幅减少可能会对环境影响产生相应的较大变化。与减少总电力投入或采购电力相比，避免与副产品相关的负担有助于适度减少对环境的影响。
Abstract Life cycle assessment was used to evaluate environmental impacts of simultaneous fish and plant production through the aquaculture practice of aquaponics. In aquaponics, hydroponic plant production replaces the conventional water treatment processes of microbial nitrification and water exchanges required in recirculating aquaculture systems (RAS) to maintain water quality. The system expansion method was used to assess potential avoided burdens from coproduction of recovered solids, plant production, and water treatment. Results indicated that electricity and feed were the main contributing factors to environmental impact. Impact assessment results were highly sensitive to changes in electricity inputs, suggesting that a small reduction in electricity could contribute to a correspondingly large change in the environmental impact. Avoided burdens associated with coproducts contributed to a moderate reduction in environmental impact compared to reducing total electricity inputs or sourcing electric...