Abstract The sugar industry effluent (SIE) is characterized as high organic load. The aim of this study is to treat SIE by bio-aerobic process in batch and continuous mode in bio-aeration reactor. In batch process, effect of hydraulic retention time (HRT) in terms of effluent fill volume, and in continuous process, effect of HRT in terms of effluent feed rate was studied. In batch process, HRT of 2.5 d (fill volume = 0.8 dm3) was found to be the best and in continuous process, HRT of 1.37 d (feed rate = 133 mL/h) was found to be the best. The chemical oxygen demand (COD) reduction by bio oxidation followed first order kinetics with respect to COD and the rate constant (K) was evaluated as 5.197 d−1. The sludge yield coefficient (a) and sludge endogenous oxidation coefficient (b) were also evaluated from sludge formation studies, which are 0.4 (gm VSS produced/g COD removed) and 0.1 (g VSS oxidized/day. g MLVSS in the aeration basin), respectively. In continuous process, the COD reduction of 83.12% of 4800 mg/dm3 and BOD reduction of 88.70% of 1240 mg/dm3 were obtained at HRT = 1.37 d. The results of the experiments show the SBR process to be an effective process for the treatment of SIE.

中文翻译：

---

活性污泥生物好氧工艺处理制糖工业废水

摘要 制糖工业废水（SIE）具有高有机负荷的特点。本研究的目的是在生物曝气反应器中采用间歇式和连续式生物好氧工艺处理 SIE。在间歇过程中，研究了水力停留时间 (HRT) 对流出物填充量的影响，在连续过程中，研究了 HRT 对流出物进料速度的影响。在批处理过程中，发现 2.5 天（填充体积 = 0.8 dm3）的 HRT 是最好的，在连续过程中，发现 1.37 天（进料速率 = 133 mL/h）的 HRT 是最好的。生物氧化的化学需氧量 (COD) 减少遵循关于 COD 的一级动力学，并且速率常数 (K) 被评估为 5.197 d-1。污泥产率系数 (a) 和污泥内源性氧化系数 (b) 也通过污泥形成研究进行评估，分别为 0.4（gm VSS 产生/g COD 去除）和 0.1（g VSS 氧化/天。曝气池中的 g MLVSS）。在连续过程中，在 HRT = 1.37 d 时，COD 减少 83.12% 4800 mg/dm3 和 BOD 减少 88.70% 1240 mg/dm3。实验结果表明SBR工艺是治疗SIE的有效工艺。