College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China.
Int J Environ Res Public Health. 2018 Nov 29;15(12):2688. doi: 10.3390/ijerph15122688.
A multi soil layering (MSL) treatment bioreactor was developed aiming at nutrients removal from anaerobically digested swine wastewater (ADSW). The start-up of the MSL bioreactor and its performance in nutrients removal at different hydraulic loading rate (HLR) were investigated. Results showed that the MSL bioreactor was successfully started up after operation for 28 days, and at this time, the removal efficiencies of ammonia-N, total nitrogen (TN) and total phosphorus (TP) in the ADSW reached 63.6%, 58.5%, and 46.5%, respectively. The MSL bioreactor showed a stable performance during the whole working process with varying HLR from 80 to 200 L/(m²·day). Maximum removal efficiencies of ammonia-N, TN and TP were obtained at 160 L/(m²·day), and was appeared as 94.2%, 94.4%, and 92.5%, respectively. It was worth noting that iron scraps were the key factor that enhanced the independent capability of the MSL bioreactor in TP removal, because there was only 21.4⁻25.8% of the TP was removed when the MSL bioreactor run with no iron addition.
一种多土层（MSL）处理生物反应器被开发出来，旨在从厌氧消化猪废水中去除营养物质。研究了 MSL 生物反应器的启动及其在不同水力负荷率（HLR）下去除营养物质的性能。结果表明，MSL 生物反应器在运行 28 天后成功启动，此时 ADSW 中氨氮、总氮（TN）和总磷（TP）的去除率分别达到 63.6%、58.5%和 46.5%。在整个工作过程中，MSL 生物反应器在 HLR 从 80 到 200 L/（m²·天）变化时表现出稳定的性能。在 160 L/（m²·天）时获得了氨氮、TN 和 TP 的最大去除效率，分别为 94.2%、94.4%和 92.5%。值得注意的是，铁屑是增强 MSL 生物反应器在 TP 去除方面独立能力的关键因素，因为当 MSL 生物反应器中没有添加铁屑时，只有 21.4-25.8%的 TP 被去除。
