The Membrane BioReactor (MBR) is a state of the art pre-engineered sewage treatment system utilizing Pure Aqua’s water treatment expertise with Toray’s submerged membrane technology. The membrane separation process eliminates the conventional sedimentation tank and allows high volumetric loading (high MLSS), resulting in a smaller footprint. The MBR can produce high quality effluent with high BOD5 removal (about 98%), complete nitrification and partial de-nitrification and achieves virtually complete TSS removal.

The MBR unit uses Toray flat sheet membranes immersed in the process tank in direct contact with the mixed liquor. Air injected from a manifold at the bottom of the membrane assembly help keep the membrane surfaces clean as well as supply oxygen for biological growth. MBR is equipped with a high level of automation, ensuring the plant’s simple operation and low maintenance cost.

Using membranes to separate sludge ensures higher quality treated water free from suspended solids. Membranes can retain activated sludge at high concentrations, resulting in more efficient BOD and nitrogen removal. The membrane has an immense number of minuscule pores delivering stable and high water permeability with minimal clogging and higher permeated water quality.

Packaged MBR STP plants are ideal for camps, hotels and/or temporary construction sites.  The high effluent quality makes the permitting process much easier (to discharge the wastewater).  Most importantly, the systems are compact and mobile.  Furthermore the process is not as operator dependent as conventional treatment.  The physical barrier of a membrane gives a much more consistent product water versus clarification that is dependent on controlling MLSS levels and types of ‘bugs’.  Regarding sludge, if it is not dewatered onsite, it can simply be trucked away, taken directly from the bioreactor.  The high MLSS and aeration rates of the MBR process acts like a digester, decreasing sludge production compared to conventional treatment.   
To see Pure Aqua’s standard line of packaged MBR equipment visit our website: http://www.pure-aqua.com/ultrafiltration-systems-1.html