Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.
Sci Rep. 2019 Nov 6;9(1):16109. doi: 10.1038/s41598-019-52493-y.
The fluctuation of domestic wastewater characteristic inhibits the current conventional microbial-based treatment. The bioremediation fungi has received attention and reported to be an effective alternative to treat industrial wastewater. Similar efficient performance is envisaged for domestic wastewater whereby assessed performance of fungi for varying carbon-to-nitrogen ratios in domestic wastewater is crucial. Thus, the performance of pre-grown wild-Serbian Ganoderma lucidum mycelial pellets (GLMPs) was evaluated on four different synthetic domestic wastewaters under different conditions of initial pH (pH 4, 5, and 7) and chemical oxygen demand (COD) to nitrogen (COD/N) ratio of 3.6:1, 7.1:1, 14.2:1, and 17.8:1 (C3.6N1, C7.1N1, C14.2N1, and C17.8N1). The COD/N ratios with a constant concentration of ammonia-nitrogen (NH-N) were chosen on the basis of the urban domestic wastewater characteristics sampled at the inlet basin of a sewage treatment plant (STP). The parameters of pH, COD, and NH-N were measured periodically during the experiment. The wild-Serbian GLMPs efficiently removed the pollutants from the synthetic sewage. The COD/N ratio of C17.8N1 wastewater had the best COD and NH-N removal, as compared to the lower COD/N ratio, and the shortest treatment time was obtained in an acidic environment at pH 4. The highest percentage for COD and NH-N removal achieved was 96.0% and 93.2%, respectively. The results proved that the mycelium of GLMP has high potential in treating domestic wastewater, particularly at high organic content as a naturally sustainable bioremediation system.
国内污水特性的波动抑制了当前传统的基于微生物的处理方法。生物修复真菌受到了关注，并被报道为处理工业废水的有效替代方法。类似的有效性能预计也适用于生活污水，因此评估真菌在不同碳氮比的生活污水中的性能至关重要。因此，在初始 pH 值（pH 4、5 和 7）和化学需氧量（COD）与氮（COD/N）比为 3.6:1、7.1:1、14.2:1 和 17.8:1（C3.6N1、C7.1N1、C14.2N1 和 C17.8N1）的不同条件下，评估了预生长的野生塞尔维亚灵芝菌丝体球（GLMP）对四种不同合成生活污水的性能。选择 COD/N 比与恒定浓度的氨氮（NH-N）的依据是从污水处理厂（STP）入口盆地采集的城市生活污水特性。在实验过程中定期测量 pH 值、COD 和 NH-N 等参数。野生塞尔维亚 GLMP 可有效去除污水中的污染物。与较低的 COD/N 比相比，C17.8N1 废水的 COD/N 比具有最佳的 COD 和 NH-N 去除效果，并且在 pH 值为 4 的酸性环境中获得了最短的处理时间。COD 和 NH-N 的去除率最高分别达到 96.0%和 93.2%。结果证明，GLMP 的菌丝体具有处理生活污水的巨大潜力，尤其是在高有机含量下，可作为一种自然可持续的生物修复系统。
