Floating island precipitation type IBR bioreactor

Abstract

The invention provides a floating island precipitation type IBR bioreactor, and relates to the technical field of sewage treatment devices. The center of the reactor is provided with a bioreaction region, wherein submersible stirrers are uniformly distributed in the bioreaction region; a precipitation region is arranged around the bioreaction region; one end of a water inlet pipe is connected with an aeration pump platform through the precipitation region; the lower part of the other end of the water inlet pipe is provided with an escape pipe; and the center of the aeration pump platform is provided with a closed type sludge sump. According to the invention, the scale adaptability of the IBR process is improved, and the purposes of convenient installation, management, maintenance and servicing of equipment and uniform aeration in an aeration tank are achieved; a precipitator is flexibly used to some extent, the civil engineering cost is saved, and uniform sludge discharge can be realized; and on the basis of an IBR three-phase separator having high separation efficiency and solid interception rate, the three-phase separator is further improved, thereby saving civil engineering units, saving the tank volume and realizing modular installation at the same time of ensuring the treatment effect.

Description

Technical field: [0001] The invention relates to the technical field of sewage treatment devices, in particular to a floating island precipitation type IBR bioreactor. Background technique: [0002] 1) Compared with other traditional processes, such as A2O, oxidation ditch process, IBR process (continuous flow integrated intermittent biological reaction sewage treatment device) has the disadvantage of large amount of water treatment: the number of shock mass transferers is large, and the corresponding There are too many aeration pumps, the structure is scattered, and there are problems such as difficult installation, management, and maintenance. The aeration pipe pipeline is long and complicated, the head loss is large, and the energy consumption is high. [0003] 2) The IBR biochemical process uses a combination of a three-phase separator and a precipitator to achieve two water and sewage separations through a step-by-step action to maximize the removal effect of suspended ...

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Problems solved by technology

[0002] 1) Compared with other traditional processes, such as A2O, oxidation ditch process, and IBR process (continuous flow integrated intermittent biological reaction sewage treatment device), the defect exists when the water volume is large: the number of shock wave mass transmitters is large, and the corresponding There are too many aeration pumps, the structure is scattered, and there are problems such as difficult installation, management, and maintenance. The aeration pipeline is long and complicated, with large head loss and high energy consumption.

[0003] 2) The IBR biochemical process uses the three-phase separator and the precipitator in combination, and realizes the separation of water and sewage twice through the step-by-step action, so as to ensure the removal effect of suspended particles to the maximum extent, but the three-phase separator and the precipitator in the IBR process are independent It is separate and has the corresponding civil part of the sedimentation unit, but because of the special structure of the three-phase separator, there is useless space at the bottom, which wastes the tank capacity

[0004] 3) The sludge discharge method of the bioreactor is mostly to discharge the sludge in a certain direction of the pool after sedimentation, which belongs to local sludge discharge, and when the treatment scale is too large, the use of the bottom sludge discharge pipe to discharge the sludge will lead to insufficient uniformity

The water inflow into the reaction tank of the sewage treatment plant is not uniform, and it needs to be mixed in the reaction tank for a long time, which increases the kinetic energy, increases energy consumption to a certain extent, and affects the operating efficiency of the sewage plant

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