Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
Bioresour Technol. 2015;188:33-42. doi: 10.1016/j.biortech.2015.02.014. Epub 2015 Feb 13.
The present study evaluates the sequential integration of two advanced biological treatment methods viz., sequencing batch reactor (SBR) and bioelectrochemical treatment systems (BET) for the treatment of real-field petrochemical wastewater (PCW). Initially two SBR reactors were operated in aerobic (SBR(Ae)) and anoxic (SBR(Ax)) microenvironments with an organic loading rate (OLR) of 9.68 kg COD/m(3)-day. Relatively, SBR(Ax) showed higher substrate degradation (3.34 kg COD/m(3)-day) compared to SBR(Ae) (2.9 kg COD/m(3)-day). To further improve treatment efficiency, the effluents from SBR process were fed to BET reactors. BET(Ax) depicted higher SDR (1.92 kg COD/m(3)-day) with simultaneous power generation (17.12 mW/m(2)) followed by BET(Ae) (1.80 kg COD/m(3)-day; 14.25 mW/m(2)). Integrating both the processes documented significant improvement in COD removal efficiency due to the flexibility of combining multiple microenvironments sequentially. Results were supported with GC-MS and FTIR, which confirmed the increment in biodegradability of wastewater.
本研究评估了两种先进的生物处理方法的顺序集成，即序批式反应器（SBR）和生物电化学处理系统（BET），用于处理实际的石化废水（PCW）。最初，两个 SBR 反应器在有氧（SBR(Ae))和缺氧（SBR(Ax))微环境中运行，有机负荷率（OLR）为 9.68kg COD/m³-天。相对而言，SBR(Ax)的基质降解速度（3.34kg COD/m³-天）高于 SBR(Ae)（2.9kg COD/m³-天）。为了进一步提高处理效率，将 SBR 工艺的出水送入 BET 反应器。BET(Ax)表现出更高的 SDR（1.92kg COD/m³-天），同时产生电能（17.12mW/m²），其次是 BET(Ae)（1.80kg COD/m³-天；14.25mW/m²）。由于能够灵活地顺序组合多个微环境，两种工艺的整合显著提高了 COD 去除效率。GC-MS 和 FTIR 的结果也证实了废水可生化性的提高。
