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Performance comparison of phenol removal in pharmaceutical wastewater by activated sludge and extended aeration augmented with activated carbon
Alexandria Engineering Journal ( IF 6.8 ) Pub Date : 2020-10-09 , DOI: 10.1016/j.aej.2020.09.048
Basim M. Mareai , Mai Fayed , Samia Ahmed Aly , Walid Ibrahim Elbarki

This study investigated the removal of phenol, Chemical Oxygen Demand (COD), and ammonia from pharmaceutical wastewater using activated sludge (AS) and extended aeration (EA) systems. Also, the impact of adding activated carbon media on the performance of the two systems has been studied. Synthetic sewage was used with a composition of COD equaling 1500 mg/L. The experimental work was divided into five scenarios for the two reactors based on the Phenol concentration, 0.0 mg/L in the first scenario, 50.0 mg/L in the second and third scenarios, but activated carbon has been added to the third one. The concentration of Phenol was 100.0 mg/L and 150.0 mg/L for the fourth and fifth scenarios, respectively. The experimental results indicated that EA system gives higher removal efficiency than that by AS system for COD, phenol, and ammonia. In addition adding activated carbon of just 1.0 gm/L of the working reactor volume in both systems (AS, EA) has improved the removal efficiency. GPS-X simulator was employed to predict the performances of the biological systems under high effluent concentration of COD reaching up to 19000 mg/L. The simulation results indicated that EA effluent could comply with Egyptian Cod (Law no 44/2000).



中文翻译:

活性污泥与扩展曝气加活性炭去除制药废水中苯酚的性能比较

这项研究调查了使用活性污泥(AS)和扩展曝气(EA)系统从制药废水中去除苯酚,化学需氧量(COD)和氨气的方法。此外,还研究了添加活性炭介质对两个系统性能的影响。使用的合成污水的化学需氧量成分等于1500 mg / L。根据苯酚浓度,将两个反应器的实验工作分为五个方案,第一个方案为0.0 mg / L,第二个和第三个方案为50.0 mg / L,但第三个方案中已添加了活性炭。在第四种和第五种情况下,苯酚的浓度分别为100.0 mg / L和150.0 mg / L。实验结果表明,EA系统对COD,苯酚和氨的去除效率高于AS系统。此外,在两个系统(AS,EA)中添加仅工作反应器体积的1.0 gm / L的活性炭也提高了去除效率。GPS-X模拟器用于预测高COD废水浓度高达19000 mg / L时生物系统的性能。模拟结果表明,EA废水可以符合埃及鳕鱼(第44/2000号法律)。

更新日期:2020-10-11
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