Microplastic Effect Attached Growth Process Attached-growth processes are biological treatment processes used in wastewater treatment and indoor fish farming where the biomass is grown on support media for organic pollutants degradation. Attached-growth processes are easy to operate and resilient to shock loads. However, they are less flexible for process control than the activated-sludge process. The earlier developed media are rock, ceramic, and slag. However, currently, plastic materials are preferred as they are economically mass-produced. With the advantage of the compact design of the attached growth processes, the process becomes a favorable option for the upgradation of the existing wastewater treatment plant. The available technologies for Wastewater and Sewage treatment are Moving Bed Bio-Reactor (MBBR) and Fluidized Aerated Bed (FAB) Reactor. Further, with the advantage of handling high organic loading, the process becomes a favorable option for indoor fish farming. The avai...