Compact MBBR Package Plant for Small Community Sewage Treatment Our Compact MBBR Package Plant (Model BM-CP100) is a fully containerized sewage treatment system designed for decentralized applications serving populations of 100-1000 PE . Housed in a standard 20ft or 40ft ISO container, this plug-and-play unit combines fine screening, MBBR biological treatment, secondary clarification, and UV disinfection into a single transportable package. Processing 10-100 m³/d , it is the