Department of Chemistry, Faculty of Sciences, University of Guilan, Rasht, Iran.
Department of Water Engineering and Environment, The Caspian Sea Basin Research Center, University of Guilan, Rasht, Iran.
Water Environ Res. 2022 Mar;94(3):e10695. doi: 10.1002/wer.10695.
The efficiency of removing chemical oxygen demand (COD) and turbidity from wood wastewater was investigated using a sequencing batch reactor (SBR) and the photo-Fenton process. A total of 94.78% of COD reduction and 99.9% of turbidity removal were observed under optimum conditions of SBR, which consisted of an organic loading rate (OLR) of 0.453 kg COD m day , mixed liquor suspended solids (MLSS) of 4564 mg L , and cycle time of 48 h. A magnetic α-Fe O @TiO @SO H nanocatalyst was prepared as a heterogeneous Fenton reagent. The Fourier transform infrared (FT-IR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), and elemental mapping (MAP) analyses were performed to determine the structure and morphology of synthesized photocatalyst. The response surface methodology (RSM) was used to optimize the process based on a central composite design (CCD). The maximum photocatalytic degradation of 87.54% and COD reduction of 83.35% were achieved at a dosage of 0.6 g L of catalyst, 30 mg L of H O , and pH of 3.5 for 45 min. The results indicated that a combination of the SBR process and α-Fe O @TiO @SO H could be used as an effective method for the treatment of wood wastewater. PRACTITIONER POINTS: A combination of the SBR and photo-Fenton process was introduced as an impressive method for wood industry wastewater treatment. The efficiencies of COD, BOD , NO -N, PO -P, and color removal were obtained according to the standard limits in Iran. To our knowledge, this study is the first report of the use of synthesized α-Fe O @TiO @SO H photocatalyst for the wood industry wastewater treatment.
采用序批式反应器（SBR）和光芬顿工艺处理木材废水中的化学需氧量（COD）和浊度。在最佳 SBR 条件下，COD 去除率为 94.78%，浊度去除率为 99.9%，最佳条件为有机负荷率（OLR）为 0.453kgCODm 3 天，混合液悬浮固体（MLSS）为 4564mgL，周期时间为 48 小时。制备了磁性α-FeO@TiO2@SO4 H 纳米催化剂作为非均相芬顿试剂。采用傅里叶变换红外（FT-IR）、X 射线衍射（XRD）、Brunauer-Emmett-Teller（BET）、场发射扫描电子显微镜（FESEM）、透射电子显微镜（TEM）、能谱（EDX）和元素映射（MAP）分析来确定合成光催化剂的结构和形态。采用响应面法（RSM）基于中心复合设计（CCD）对工艺进行优化。在催化剂用量为 0.6gL、H2O2 用量为 30mgL、pH 值为 3.5 的条件下，光催化降解率达到 87.54%，COD 去除率达到 83.35%，反应时间为 45min。结果表明，SBR 工艺与α-FeO@TiO2@SO4 H 的结合可作为处理木材废水的有效方法。
介绍了序批式反应器（SBR）和光芬顿工艺的组合，作为木材工业废水处理的一种有效方法。
根据伊朗的标准限制，获得了 COD、BOD、NO3-N、PO4-P 和颜色去除的效率。
据我们所知，这项研究是首次报道使用合成的α-FeO@TiO2@SO4 H 光催化剂处理木材工业废水。
