Internal circulating fluidized bed bioreactor

The principle of internal circulation fluidized bed bioreactor

The reactor is an inner-circulation fluid bed bio-reactor with an internal circulation. Compared with a general fluidized bed reactor, the amount of reflux water required to maintain the fluidized state of the sludge bed can be reduce it by 45-65%. In addition, the multi-stage string structure fully reflects the hierarchical multi-phase process idea, achieving higher removal efficiency and environmental impact load capacity, better effluent quality, and more stable operating system. A hydraulic internal circulation device is arranged in the reaction zone, and the water body, the biological carrier in the upper layer of the reaction zone and the influent sewage are simultaneously sucked down by the jet principle to form a hydraulic circulation inside the reaction zone.


(1) Achieving modularized structure

The whole reactor system is composed of a plurality of independent reaction units connected in series to form a multiphase biological classification processing system, to forming a modularized biological treatment structure, which fully reflects the easy expansion performance of the elastic combination.

(2) Greatly reducing the energy consumption

The internal circulation device inside the fluidized bed reaction zone enhances the efficiency of the threephase separator and greatly reduces the amount of reflux water

(3) High Efficiency of dissolved oxygen ability

The influent water and the air are sucked in and mixed respectively by the reflux hydraulic force, and the dissolved oxygen adsorption ability of the activated carbon biocarrier is added in order to form a high-efficiency dissolved oxygen effect.

(4) High efficient process ability

The application of activated carbon has a larger specific surface area and great force adsorption capacity, refractory organic matter and dissolved oxygen in water, forming a three-phase coexistence environment of high concentration matrix, adsorption microorganism, high concentration organism and high concentration oxygen, the reaction creates superior processing conditions which is biochemical.

(5) Ability to process toxicated substances and refractory wastewater