Microplastics (MPs) have recently become a controversial issue, mainly due to their eco-toxicological effects on aquatic environments. Although a typical wastewater treatment plant (WWTP) removes a large number of MPs from the wastewaters, final effluents are yet considered to be the primary sources of MP contaminations into the environment. Hence, there should be a tertiary treatment called advanced wastewater treatment technology for efficient MP removal. In the current research, Al-based and Fe-based coagulants were used in a dissolved air flotation (DAF) cell as an advanced wastewater treatment technology to remove polyethylene (PE) MPs from greywater, which is one of the most predominant types of MPs found in the greywater. PE reduction up to 96.10 % and 70.56 % were observed for Al- and Fe-based coagulants, respectively. The operative parameters, including pressure, pH, coagulant dosage, and water flow rate into the flotation cell, were identified. The experimental design was developed using Design-Expert software to investigate and maximize the PE removal efficiency. As a result, some sufficiently accurate statistical models were proposed to obtain the optimum quantities of the respective factors. It was determined that the most effective removal was achieved with 5.95 bar saturation pressure, pH 6, 14.46 mg/L coagulant concentration, and 680.5 mL/min water flow rate into the flotation cell using AlCl₃·6H₂O as the coagulant.

最近，由于其对水生环境的生态毒理学影响，微塑料（MPs）已成为一个有争议的问题。尽管典型的废水处理厂（WWTP）从废水中去除了大量的MP，但最终废水仍被认为是MP污染环境的主要来源。因此，应该有一种称为高级废水处理技术的三级处理，以有效去除MP。在当前的研究中，铝基和铁基混凝剂在溶解气浮（DAF）池中用作先进的废水处理技术，用于从灰水中去除聚乙烯（PE）MP，灰水是MPs中最主要的类型之一在灰水中发现。对于基于铝和铁的混凝剂，PE分别降低了96.10％和70.56％。确定了操作参数，包括压力，pH，凝结剂用量和进入浮选池的水流量。实验设计是使用Design-Expert软件开发的，旨在研究和最大化PE去除效率。结果，提出了一些足够准确的统计模型来获得各个因素的最佳数量。使用AlCl可以确定最有效的去除效果是在5.95 bar的饱和压力，pH 6、14.46 mg / L的凝结剂浓度和680.5 mL / min的水流入浮选池中的情况下实现的 提出了一些足够准确的统计模型，以获取各个因素的最佳数量。使用AlCl可以确定，在5.95 bar的饱和压力，pH 6、14.46 mg / L的凝结剂浓度和680.5 mL / min的水流入浮选池中的流速时，可以实现最有效的去除 提出了一些足够准确的统计模型，以获取各个因素的最佳数量。使用AlCl可以确定最有效的去除效果是在5.95 bar的饱和压力，pH 6、14.46 mg / L的凝结剂浓度和680.5 mL / min的水流入浮选池中的情况下实现的₃ ·6H ₂ O作为凝结剂。