Aydin A F, Altinbas M, Sevimli M F, Ozturk I, Sarikaya H Z
Istanbul Technical University, Environmental Engineering Department, ITU Insaat Fakültesi, Maslak, Turkey.
Water Sci Technol. 2002;46(9):323-30.
The purpose of this study was to investigate an effective treatment system which can be applicable to treat opium alkaloid industry (OAI) effluents characterised with high COD, TKN, dark color and non-biodegradable organic pollutants. In the first phase of the study, lab-scale anaerobic (UASBR) + aerobic (SBR) treatability studies were carried out on opium processing industry effluents. Effluent CODs from the two staged biological treatment system were relatively high (-700 mg l(-1)) and additional post treatment was required. Physico-chemical treatability studies previously carried out on the effluent of opium alkaloid wastewater treatment plant, were not effective in removing residual COD and color. In the second phase of the study, the refractory organics causing higher inert COD values in the SBR effluent were additionally treated by using Fenton's Oxidation. The batch tests were performed to determine the optimum operating conditions including pH, H2O2 dosage, molar ratio of Fe2+/H2O2 and reaction time. It was found that removal efficiencies of COD and color for 30 minutes reaction time were about 90% and 95%, respectively. The ratio of H2O2/FeSO4 was determined as 200 mg l(-1)/600 mg l(-1) for the optimum oxidation and coagulation process at pH 4. Experimental results of the present study have clearly indicated that the Fenton's oxidation technology is capable to treat almost all parts of the organics which consist of both soluble initial and microbial inert fractions of COD for opium alkaloid industry effluents. Effluents from the Fenton's Oxidation process can satisfy effluent standards for COD and color in general.
本研究的目的是探究一种有效的处理系统，该系统可用于处理具有高化学需氧量（COD）、总凯氏氮（TKN）、深颜色和不可生物降解有机污染物特征的鸦片生物碱工业（OAI）废水。在研究的第一阶段，对鸦片加工工业废水进行了实验室规模的厌氧（上流式厌氧污泥床反应器，UASBR）+好氧（序批式反应器，SBR）可处理性研究。两阶段生物处理系统的出水化学需氧量相对较高（-700毫克/升），需要额外的后处理。先前对鸦片生物碱废水处理厂的废水进行的物理化学可处理性研究，在去除残留化学需氧量和颜色方面效果不佳。在研究的第二阶段，通过使用芬顿氧化法对导致SBR出水中较高惰性化学需氧量值的难降解有机物进行了额外处理。进行了批次试验以确定最佳操作条件，包括pH值、过氧化氢用量、Fe2+/H2O2摩尔比和反应时间。结果发现，反应30分钟时化学需氧量和颜色的去除效率分别约为90%和95%。在pH值为4时，为实现最佳氧化和混凝过程，过氧化氢/硫酸亚铁的比例确定为200毫克/升/600毫克/升。本研究的实验结果清楚地表明，芬顿氧化技术能够处理几乎所有组成部分的有机物，这些有机物包括鸦片生物碱工业废水化学需氧量的可溶性初始部分和微生物惰性部分。芬顿氧化过程的出水总体上可以满足化学需氧量和颜色的排放标准。
