Design of Pre Treatment Units by Integrating Moving Bed Biofilm Reactor for Improving Efficiency of Sewage Treatment Plant

Abstract

With the rapid pace of urbanization and population growth, the generation of domestic wastewater has increased significantly, placing immense pressure on existing sewage treatment infrastructure. Untreated or inadequately treated sewage discharged into natural water bodies poses serious environmental and public health risks due to the presence of organic matter, suspended solids, nutrients, oils, and other contaminants. Therefore, the need for efficient and sustainable treatment technologies has become more critical than ever.

The effectiveness of any sewage treatment plant (STP) greatly depends on the design of its pre-treatment units, which are responsible for removing large solids, grit, oils, and greases before biological treatment begins. Properly designed pre-treatment units enhance the overall efficiency of the plant, reduce operational issues, and protect downstream equipment and biological processes. Among various modern treatment technologies, the Moving Bed Biofilm Reactor (MBBR) stands out as a compact and efficient system for biological wastewater treatment. By integrating the advantages of both activated sludge and fixed-film systems, MBBR offers higher treatment efficiency in a smaller footprint. It is especially effective in removing organic matter, nitrogen compounds, and other pollutants from domestic wastewater. This study focuses on the design of pre-treatment units integrated with MBBR technology, based on detailed wastewater analysis. The objective is to improve the operational efficiency and reliability of the sewage treatment plant while ensuring compliance with environmental discharge standards