Tertiary treatment of aerobically digested landfill leachate and simultaneous carbon dioxide capture using microalgae

该项目建议评估由好氧消化过程产生的垃圾填埋场渗滤液的三级抛光处理。垃圾渗滤液将作为液体营养原料，在有盖的环形池型光生物反应器中培养微藻，特别是普通小球藻和盐杜氏藻。有氧消化过程中产生的二氧化碳也将作为光合微藻的碳饲料。该过程的评估将在一名研究助理的帮助下进行，为期6个月。将在西部建造和调查一个模拟现场现场环境的试验性跑道池塘系统。考察了养分负荷、二氧化碳喷射速率和负荷、光照强度、温度和pH等参数对水稻生长的影响。这些研究的目的是确定使藻类细胞产量最大化的最佳操作参数。研究结果将提供一种生产清洁水、捕获二氧化碳和以微藻形式提供价值的综合方法。

The project proposes to evaluate a tertiary polishing treatment of a landfill leachate originating from an aerobic digestion process. The landfill leachate will serve as a liquid nutrient feedstock to culture microalgae, in particular Chlorella vulgaris and Dunaliella salina in a covered raceway pond type photo-bioreactor configuration. The evolved carbon dioxide from the aerobic digestion process will also serve as carbon feed to the photosynthetic microalgae. The evaluation of the process will be carried out over a period of 6 months with the help of one research assistant. An experimental raceway pond system will be constructed and investigated at Western in a configuration which simulates an on-site field environment. The effect of various parameters such as nutrient load, carbon dioxide sparging rate and loading, light intensity, temperature and pH etc. will be investigated. The aim of these studies will be to determine optimum operational parameters which maximize algal cell yield. The results will provide an integrated approach to produce clean water, capture carbon dioxide and provide value in the form of microalgae.