Microalgae cultivation on wastewater augments the conversion of a waste stream into a profitable end-product, thus, establishing a circular economy. In this study, we successfully isolated and established the growth of a local microalga Chlorella sp. (Trebouxiophyceae) on raw anaerobically digested abattoir effluent (ADAE). The effect of CO₂ addition on culture properties and the growth, photosynthesis, nutrient removal efficiency and biochemical composition of Chlorella sp. were evaluated. The addition of CO₂ resulted in 28 % increase in biomass productivity when compared to the control culture with no CO₂ supplementation. CO₂ addition also resulted in higher ammoniacal nitrogen removal rate (95 %) when compared to the control (59 %) while no significant difference was recorded in terms of phosphate removal in both treatments. Chlorella cultures aerated with CO₂ also showed a higher effective quantum yield (F_q'/F_m') when compared to the control culture. No significant differences were observed in terms of total protein and pigment content of cultures aerated with and without CO₂ while total carbohydrate content was higher in the control cultures. Based on a mass balance analysis, between 12–16 % of ammoniacal nitrogen and between 11–16 % of total phosphorus removed from the ADAE was assimilated for the formation of algal biomass in the cultures. The remaining ammoniacal nitrogen was most likely removed by ammonia volatilization through air stripping.

在废水上进行微藻养殖可增加废物流向可盈利终端产品的转化，从而建立循环经济。在这项研究中，我们成功地分离并建立了本地微藻小球藻的生长。（Trebouxiophyceae）厌氧消化的屠宰场废水（ADAE）。CO _2的添加对小球藻的培养特性及生长，光合作用，营养去除效率和生化组成的影响。被评估。与不添加CO ₂的对照培养物相比，添加CO ₂可使生物量生产率提高28％。一氧化碳₂与对照（59％）相比，添加磷铵还可以提高氨氮去除率（95％），而两种处理的磷去除率均无显着差异。与对照培养相比，用CO ₂充气的小球藻培养物还显示出更高的有效量子产率（F _q '/ F _m '）。在有和没有CO ₂曝气的培养物中，总蛋白和色素含量没有观察到显着差异对照培养物中总碳水化合物含量较高。根据质量平衡分析，从ADAE中吸收的氨氮中的12-16％和总磷中的11-16％被同化了，以在培养物中形成藻类生物量。残留的氨氮很可能是通过空气汽提使氨挥发而除去的。