Method and device of jet airlift recirculated membrane bioreactor

Abstract

The invention provides a method for manufacturing a jet gas-stripping type independent membrane bioreactor as well as a device for realizing the method. A jet aerator is adopted to replace the traditional blower for realizing the stripping effect of a membrane module, thereby greatly reducing the operational energy. Partial circulation solution in a bio-aeration pool flows through the jet aerator at a high speed to generate the negative pressure for sucking air in, a fast mixed gas-liquid two-phase flow which is evenly ejected into the membrane module through a novel water and air distributing device is formed, continuous and effective washing and air bump rinse are carried out, the pollution of the membrane is effectively reduced and the service life of the membrane is prolonged. The violent agitation function produced by the jet aerator also increases the mass-transfer velocity in the mixed solution, so as to speed up the biochemical reaction and improve the treatment efficiency. The operational energy of the method is low, the pollution degree of the membrane is reduced, and the initial investment of the equipment is decreased. The structure of the device is simple, the occupied area is small, the operation is easy, and the automatic operation and the operation control are convenient.

Description

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AI Technical Summary

Benefits of technology

This technology uses an injector system for regulating the movement of fluids within a bioreactor or other apparatus. It achieves this by adding tiny holes on its nozzle plate called bubbles (a type of foam) at certain points along their length. These tiny openings allow some gases from outside the reagent chamber into the interior where they react chemically when exposed to these chemicals inside it. By adjusting how much time each hole opens up during injection, there can be more efficient use of fuel compared to previous methods like mechanical stirring systems. Additionally, the design reduces damage caused by excessive pressure waves generated by the fan's rotation. Overall, this new technique helps improve the performance and lifespan of the biological process while minimizing environmental impact.

Problems solved by technology

Technology Problem addressed in this patents relating to splitting MBR systems includes generating fast and uniform gas/liquid flows during membranous redox processes used in treatments or disposable products such as sepsis dialysis plants. These streams created from the breakdown of hydrogen sulfide may cause environmental concerns when discharged without proper management measures. Additionally, current solutions involve injecting chemical agents onto the surface of the components themselves causing damage over time. There is therefore a technical challenge associated with designing suitable techniques for efficiently producing high-quality splashless MBR assemblies while minimizing power usage and operational costs.

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