The leather industry is an essential sector, especially in countries with highly developed livestock as they use rawhide to produce high-valued leather products. The leather-making process uses different chemicals and is a source of environmental pollution if the wastewater is not properly treated. Therefore, the purpose of this study is to analyze a Moving-Bed Biofilm Reactor (MBBR) as a new technology for the biological treatment of tannery wastewater. This system incorporate benefits provided by the suspended growth systems, which have already been consolidated in treating wastewater, such as activated sludge and the advantage of growth adhered to biocarriers that have a large surface area. Incorporating activated sludge into MBBR enables the removal of both organic and nitrogen pollutants. Studies have shown that MBBR treatment efficiency depends on biocarrier surface area, composition, texture, and reactor operating conditions, such as filling fraction, hydraulic retention time, dissolved oxygen, and volumetric organic load.

皮革工业是一个必不可少的部门，尤其是在畜牧业高度发达的国家，因为他们使用生皮生产高价值的皮革产品。制革过程使用不同的化学品，如果废水处理不当，就会成为环境污染源。因此，本研究的目的是分析移动床生物膜反应器（MBBR）作为一种生物处理制革废水的新技术。该系统结合了悬浮生长系统提供的好处，这些系统已经在处理废水方面得到了巩固，例如活性污泥，以及附着在具有大表面积的生物载体上的生长优势。将活性污泥加入 MBBR 可以去除有机污染物和氮污染物。