电气石强化生物膜系统处理中药废水的启动及生物膜特性分析

将电气石与生物膜技术结合构建电气石强化生物膜系统处理中药废水，通过电气石调节生物膜微环境，以增强微生物代谢活性，从而提高了反应系统的处理能力。结果表明：电气石强化厌氧流化床(AFBR)反应系统经历160 d完成中药废水的启动实验，反应系统COD去除率达到87.8%，容积负荷达到5.34 kg·(m³·d)⁻¹，生物膜产甲烷活性达到126.4 mL·(g·d)⁻¹；电气石强化好氧流化床(FBR)反应系统统经历35 d完成启动实验后，出水COD稳定在76.5 mg·L⁻¹，反应系统对应的COD去除率和容积负荷分别为90.3%和1.4 kg·(m³·d)⁻¹。中药废水依次经AFBR和FBR处理后，出水水质满足《中药类制药工业水污染物排放标准》(GB 21906-2008)排放要求。以上结果可为实际工程项目提供理论依据和参考。

Analysis on biofilm characteristics and start-up of biofilm system enhanced by tourmaline treating Chinese medicine wastewater

In this study, the combination of tourmaline and biofilm technology was to build the tourmaline enhanced biofilm system for Chinese medicine wastewater treatment. The tourmaline was used to regulate the micro-environment of the biofilm, enhance the metabolic activity of microorganisms and improve the treatment efficiency of the reaction system. The results showed that after 160 d, the start-up of tourmaline enhanced anaerobic fluidized bed reactor (AFBR) for Chinese medicine wastewater treatment was completed. COD removal efficiency of the reaction system reached 87.8%, the volume loading reached 5.34 kg·(m3·d)−1, and the methanogenic activity of biofilm reached 126.4 mL·(g·d)−1. After 35 days, the tourmaline enhanced fluidized bed reactor (FBR) was completed. The effluent COD maintained at 76.5 mg·L−1. The COD removal efficiency and volume loading of the reaction system were 90.3% and 1.4 kg·(m3·d)−1, respectively. Chinese medicine wastewater was treated by AFBR and FBR successively. Its effluent water quality met the discharge requirements of Discharge Standard of Water Pollutants in Traditional Chinese Medicine Pharmaceutical Industry (GB 21906-2008). This provides theoretical support and reference for actual projects.