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

Most new production today of germanium today is from zinc ores or coal fly ash. Both processes involve acid leaching, an already difficult process further complicated by the unique challenges posed by germanium, notably its hardness. Dynamix designs mixers that deliver longevity and reliability in germanium recovery. The Germanium Recovery Process Germanium is typically found in very low concentrations and requires significant refining. Sources of recoverable germanium include zinc, silver, lead, and copper ores, along with fly ash from the combustion or gasification of coal. The refining process begins with acid leaching using sulfuric, phosphoric, or other acids. This dissolves the germanium into the leachate, separating it from the remaining solids. However, some impurities are dissolved as well and must