Technological process and apparatus of serial gas stripping inner circulation reactor

Abstract

The present invention belongs to the field of sewage biologically treating technology, and has two serially contained traditional gas stripping inner circulation reactors with gas conveyer, ORP probe, DO probe, pH probe and temperature probe; and liquid conveyer outside the lower reactor with pump and liquid pipeline to convey sewage into the lower reactor. The lower reactor is provided with sludge exhaust in the bottom, and water inlet and water exhaust on two sides; and the upper reactor has triphase separator with upper overflow weir to exhaust water, top gas exhaust, and water inlet and water exhaust on two sides. The present invention has suitable environment for both heterotrophic bacteria and nitrobacteria, raised organic matter degrading and nitrfication rate and low cost.

Description

technical field [0001] The invention relates to a sewage biological treatment process method and device, which are used for treating sewage containing organic pollutants and ammonia nitrogen. Background technique [0002] Air-Lift Loop Bioreactor, ALBR for short, is a new type of high-efficiency sewage biological treatment device. Using it to treat sewage has unique advantages such as simple process structure and form, small footprint, strong mass and oxygen transfer performance, high sludge concentration, good activity, high treatment efficiency, and flexible and changeable operation modes. By controlling different operating conditions, common organic pollutants and ammonia nitrogen (nitration process) and other biochemical reaction processes can be removed in one reactor. The treatment efficiency is high, and it is suitable for the treatment of community sewage and continuous discharge where the land is tight and the water quality and quantity vary greatly. of industrial ...

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Problems solved by technology

In addition, if the reaction time is not properly controlled, the nitrification reaction time will often be insufficient, resulting in the concentration of ammonia nitrogen in the effluent not reaching the standard

Therefore, although the traditional air-lifting internal circulation reactor process has certain advantages over the traditional activated sludge process, it cannot control heterotrophic bacteria and nitrifying bacteria to be in the best living environment at the same time when treating sewage with refractory organic matter and high concentration of ammonia nitrogen. This is the main contradiction

Improper control will affect the effluent water quality and reduce the treatment efficiency

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