Mejía Marchena Ricardo, Maturana Córdoba Aymer, Gomez Cerón Diego, Quintero Monroy Christian, Arismendy Montes Luis, Cardenas Perez Carlos
Instituto de Estudios Hidráulicos y Ambientales-IDEHA, Universidad del Norte, km 5 vía a Puerto Colombia, Barranquilla, Colombia E-mail:
Grupo de Investigación en Robótica y Sistemas Inteligentes, Departamento de ingeniería Eléctrica y electrónica, Universidad del Norte, km 5 vía a Puerto Colombia, Barranquilla, Colombia.
Water Sci Technol. 2020 Jul;82(2):315-329. doi: 10.2166/wst.2020.179.
Reuse of wastewater, as well as recovery of valuable, toxic or harmful products in industrial discharges, still represents an important issue, not only because it reduces the effect on receiving water bodies, but also because of the economic resources it represents for industry itself. In this research, in situ regeneration of MnSO is evaluated, for its reuse as the main raw material in the original process of a fungicide plant. The regeneration is evaluated by selective recovery of Mn, Zn and SO present in the wastewater produced by the industrial plant, and utilizing nanofiltration, electro-electrodialysis and chemical precipitation as separation alternatives. Each alternative was designed and evaluated technically and economically through simulations in Aspen Plus, with data and information of the real process supplied by the company. Because zinc concentration is relatively low, its selective recovery was not attractive. The resulting MnSO solution and treated water quality in conventional alternatives were significantly poor with high costs. In contrast, nanofiltration and electro-electrodialysis alternatives generate water and by-products of higher quality and reuse potential with significantly lower costs. However, their viability depends on the membrane performance. The results were satisfactory, but future experimental studies are required to optimize the alternatives and define the correct pretreatment process.
废水的回用以及工业排放物中 valuable、有毒或有害物质的回收，仍然是一个重要问题，这不仅是因为它减少了对受纳水体的影响，还因为它为工业本身带来了经济资源。在本研究中，评估了硫酸锰的原位再生，以便将其作为杀菌剂厂原始工艺中的主要原料进行回用。通过选择性回收工厂产生的废水中存在的锰、锌和硫酸根，并利用纳滤、电渗析和化学沉淀作为分离方法来评估再生过程。通过在Aspen Plus中进行模拟，根据公司提供的实际工艺数据和信息，对每种方法进行了技术和经济方面的设计与评估。由于锌浓度相对较低，其选择性回收并不具有吸引力。传统方法得到的硫酸锰溶液和处理后的水质明显较差，成本也很高。相比之下，纳滤和电渗析方法产生的水和副产品质量更高，回用潜力更大，成本也显著更低。然而，它们的可行性取决于膜的性能。结果是令人满意的，但未来还需要进行实验研究，以优化这些方法并确定正确的预处理工艺。
