Biological fluidized bed adopting tubular membrane and water treatment method for biological fluidized bed

Abstract

The invention discloses a biological fluidized bed adopting a tubular membrane and a water treatment method for the biological fluidized bed. According to the biological fluidized bed and the water treatment method for the same, the concentration of suspended microbes can be reduced, membrane pollution can be suppressed, the service life of the membrane can be prolonged, the concentration of suspended matters in effluent can be reduced, carrier loss can be avoided, and the effluent quality can be improved. A tubular membrane component is arranged on the middle part of a barrel. A catchment area is formed between a tube shell and the tubular membrane. A water outlet communicated with the catchment area is formed at the lower end of the tube shell, and is connected with a discharge pump through a catchment pipeline. An air outlet communicated with the catchment area is formed at the upper end of the tube shell. A raw water area is formed between the upper end of the tubular membrane component and the barrel. A gas-liquid mixing area is formed between the lower end of the tubular membrane component and the barrel. An aeration head opposite to an inner cavity of the tubular membrane is arranged at the bottom of the barrel. The inner cavity of the tubular membrane is an upflow area. A downflow area is formed between the tube shell and the barrel. Active sludge cultivated by the microbes and carrier particles with formed biofilms are arranged in the barrel. The fluidized bed has a good water treatment effect.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a biological fluidized bed using a tubular membrane and a water treatment method thereof. Background technique [0002] Immobilized microorganism technology is a modern bioengineering technology that uses chemical or physical means and methods to limit or locate free microorganisms in a specific space, retain their inherent catalytic activity, and can be used repeatedly and continuously. The immobilized microbial technology can immobilize the screened dominant bacteria that can degrade specific substances. It has the advantages of fast reaction start-up, high treatment efficiency, stable operation, less sludge production, and simple solid-liquid separation when used in wastewater treatment. Immobilized microorganism technology mainly includes membrane bioreactor (MBR), biological fluidized bed and so on. [0003] Membrane bioreactor is a new and efficient sewage treatmen...

AI Technical Summary

Problems solved by technology

However, the three-phase separator in the three-phase biological fluidized bed has an unsatisfactory solid-liquid separation effect due to the short settling time, and the high content of SS (suspended solids) in the effluent seriously affects the quality of the effluent. The bed also has the problem that the carrier is easy to lose

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