Nano aeration biofilm reactor

Abstract

The invention discloses a nano aeration biofilm reactor. The main structure of the nano aeration biofilm reactor is that an inlet water regulating reservoir is connected with a water inlet of the reactor by a water pump, the reactor is filled with fillers, a biofilm is grown on surfaces of carbon fiber fillers, the upper part of the reactor is connected with a water inlet pipe of a nano-aerator, the lower part of the reactor is connected with an aeration pipe of the nano-aerator, and a water outlet of the reactor is connected with an outlet sump by a solenoid valve. According to the nano aeration device for aeration disclosed by the invention, the oxygen transfer capability and the dissolved oxygen concentration are increased, the present situation of low oxygen utilization ratio is improved, the waste of energy resources is simultaneously reduced, and the electricity consumption can be saved by 1 / 5. The nano carbon fiber fillers are used as the fillers, so that the defects of low treatment efficiency, easy blockage and poor shock resistance of the traditional biofilm reactor are improved, and the mode for treating domestic sewage of the biofilm reactor is innovated, the removal efficiency of ammonia-nitrogen and COD (chemical oxygen demand) is up to 95%-98%, the effluent quality is good, and the occupied area is small. The nano aeration biofilm reactor disclosed by the invention is suitable for treating the domestic sewage.

Description

technical field [0001] The invention relates to a biofilm reactor for sewage treatment, in particular to a biofilm reactor with nano-aeration and nano-filler. Background technique [0002] People will produce a large amount of sewage in their daily life. This sewage contains a large amount of COD and ammonia nitrogen. If it is directly discharged into the ecological environment without treatment, it will lead to pollution of water sources, and at the same time, it will breed a large number of bacteria and become the source of disease infection and spread. [0003] The existing biofilm reactor aeration method is outdated, and the shear force generated by the floating process of bubbles often washes away the grown biofilm, which brings resistance to the process of film formation. The concentration of dissolved oxygen is low, and the oxygen utilization rate is not high. Caused unnecessary waste of energy. [0004] The fillers used in the existing biofilms have poor film-hangin...

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Problems solved by technology

[0003] The existing biofilm reactor has an outdated aeration method, and the shear force generated during the floating process of the bubbles often washes away the grown biofilm, which brings resistance to the film formation process, the dissolved oxygen concentration is low, and the oxygen utilization rate is not high. Unnecessary waste of energy

[0004] The fillers used in the existing biofilms have poor film-hanging effects, and it is difficult for microorganisms to attach to the surface of the filler. The amount of sludge generated is high, causing secondary pollution, and the microorganisms on the surface of the filler are agglomerated, and the growth is unstable. It is difficult to form a good removal of microorganisms, Bacterial micelles with high-efficiency denitrification and favorable mass transfer are difficult to remove COD and ammonia nitrogen in sewage efficiently and quickly

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