mixing matters blog

Today, moving bed biofilm reactor (MBBR) processes are widespread throughout the wastewater treatment industry. These processes rely on media with a high surface area to carry biofilm and achieve the same results as conventional bioreactors with reduced space requirements. MBBR mixing ensures that the media and influent are distributed uniformly throughout the reactor. Wastewater treatment facilities can adapt MBBRs to fulfill many process requirements. They can replace activated sludge processes and are also an attractive option for biological nitrogen removal. Many wastewater treatment facilities use a series of MBBRs with both anaerobic and aerobic steps. MBBR mixing must address several challenges and constraints to ensure process effectiveness and efficiency while also offering energy savings compared to dispersed air mixing. Key

Anaerobic digesters (or anaerobic mixers) are a versatile wastewater treatment technology that sees wide use in agricultural, municipal, and other applications. Bacteria break down incoming waste in the absence of oxygen, a process that produces biogas (a mixture of methane and carbon dioxide) and digestate (a nutrient-rich fertilizer). Because anaerobic digestion relies on sensitive bacteria, significant design consideration must be dedicated to keeping process parameters just right. Agitation Improves Anaerobic Digestion on Multiple Fronts Anaerobic digesters rely on a delicate balance of pH and temperature to operate effectively. The most widely used designs are continuously stirred tank reactors (CSTRs), with the assumption that these parameters will be uniform throughout the tank. A CSTR operates on the principle that incoming feedstocks