This study evaluates the potential of thermophilic mixotrophic alga, Galdieria sulphuraria, to efficiently perform on-site treatment of landfill leachate (LL). Nutrient removal and algae growth experiments using various dilutions (20%, 40%, 60%, 80%, 100%) of actual municipal LL were carried out in a 14-day lab scale set-up. The effect of N/P mass ratio (255:1; 100:1; 50:1; 25:1; 10:1; 4.55:1) was also tested. Based on the results, it was evident that the growth reactors with 20% LL outperformed the other growth reactors. The final algal biomass density in 20% LL was 2.16 ± 0.22 g L⁻¹ (twice more than compare to standard media) and the observed growth rate was 159 mg L⁻¹d⁻¹. Fourteen-day removal efficiencies were 99.9% for ammoniacal-nitrogen and 34% for phosphate, with removal rate of 22.78 mg L⁻¹d⁻¹ and 2.91 mg L⁻¹d⁻¹, respectively. Addition of P increased NH₄-N removal rate from 16.3 to 23.6 mg L⁻¹ day⁻¹ when N/P mass ratio was changed from 255:1 to 4.55:1. Furthermore, range of N/P mass ratio from 100:1 to 25: 1 has been found to achieve almost 100% removal of both NH₄-N and PO₄-P from 20% LL in 14 days. Overall, this study showed a promising algal-based treatment system for LL nutrient removal and producing algal-biomass for subsequent value-added product generation.

这项研究评估了嗜热混合营养藻类（Galdieria sulphuraria）在垃圾渗滤液（LL）的有效处理方面的潜力。在14天的实验室规模设置中，使用各种稀释液（20％，40％，60％，80％，100％）的实际市政LL进行了营养去除和藻类生长实验。还测试了N / P质量比（255：1; 100：1; 50：1; 25：1; 10：1; 4.55：1）的影响。根据结果​​，很明显LL为20％的生长反应器的性能优于其他生长反应器。20％LL中的最终藻类生物量密度为2.16±0.22 g L ^-1（比标准培养基高两倍），观察到的生长速率为159 mg L ^-1 d ^-1。氨氮的十四天去除效率为99.9％，磷酸盐为34％，去除率分别为22.78 mg L ^-1 d ^-1和2.91 mg L ^-1 d ^-1。当N / P质量比从255：1变为4.55：1时，P的添加将NH ₄ -N的去除率从16.3增加到23.6 mg L ^-1  day ^-1。此外，已经发现N / P质量比在100∶1至25∶1的范围内，在14天内从20％的LL中几乎100％地除去了NH ₄ -N和PO ₄ -P。总体而言，这项研究显示了一种有前途的基于藻类的处理系统，可去除LL营养素并产生藻类生物质，用于后续增值产品的生产。