HDPE MBBR Wastewater Treatment Filter Media for Latin American Biofilm Reactors Our BM-BC800 HDPE MBBR wastewater treatment filter media is engineered for high-performance biofilm carrier applications in municipal and industrial wastewater treatment plants across Latin America . These biocarriers provide an optimal protected surface area of 800 m²/m³ for microorganism attachment, dramatically improving BOD, COD, and ammonia removal efficiency in MBBR, IFAS, and biological