推流方式对微藻光生物反应器处理养猪废水的影响  

Effect of Plug‑flow Operational Mode on Performance of Microalgal Photobioreactor for Treatment of Piggery Wastewater

作　　者：肖海文[1] 刘艺 翟俊[1] 李海星 陶光卿 雷雨田 XIAO Hai‑wen;LIU Yi;ZHAI Jun;LI Hai‑xing;TAO Guang‑qing;LEI Yu‑tian(Key Laboratory of the Three Gorges Reservoir Region’s Eco‑Environment,Chongqing University,Chongqing 400045,China)

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2023年第21期7-12,共6页China Water & Wastewater

基　　金：国家自然科学基金资助面上项目(51878093)。

摘　　要：探讨微藻光生物反应器处理养猪废水的运行方式对开发可资源回收、低成本的畜禽养殖废水处理技术具有重要意义。为此,通过试验考察了处理实际养猪废水时,日推流时长和推流流速对廊道式微藻光生物反应器启动、藻液生物量浓度和污染物去除效果的影响,探讨了最佳推流运行方式。结果表明,全天24 h连续推流可促进反应器快速启动;低流速(0.062 m/s)、白天12 h间歇推流可让反应器获得最大的藻液生物量和最佳处理效果;推流流速和日推流时长越大,COD去除率就越高;仅在白天推流且流速较低时,反应器也能保持较高的氨氮去除率;而推流流速越小、日推流时长越短,总磷去除率就越高。The operational mode of microalgal photobioreactor for the treatment of piggery wastewater is of great significance for developing the livestock and poultry wastewater treatment technologies with resource recovery and low operational cost.In this study,the effects of daily plug‑flow duration and plug‑flow velocity on the start‑up,algal biomass concentration and pollutants removal efficiency of the corridor microalgal photobioreactor for the treatment of actual piggery wastewater were investigated,and the optimal plug‑flow operational mode was discussed.The 24‑hour continuous plug‑flow operation promoted the rapid start‑up of the reactor.The daily intermittent plug‑flow operation with low flow velocity enabled the reactor to obtain the maximum algal biomass concentration and the best treatment performance.The larger flow velocity and the longer daily plug‑flow time resulted in the higher COD removal efficiency.The reactor also maintained a high removal efficiency of ammonia nitrogen at the daily intermittent plug‑flow operation mode with low flow velocity.The lower flow velocity and shorter daily plug‑flow time led to the higher removal efficiency of total phosphorus.

关 键 词：养猪废水 微藻 光生物反应器 推流流速 推流时长 

分 类 号：TU992[建筑科学—市政工程]