Upflow subregion anammox bioreactor

Abstract

The invention relates to an upflow subregion anammox bioreactor, comprising a reactor body, wherein the reactor body is divided into a water inlet buffer region, an upflow reaction chamber and a three-phase separation region from bottom to top; the water inlet buffer region comprises a water inlet pipe arranged at one side of the bottom of the reactor body, the upflow reaction chamber is connected with a settling chamber of the three-phase separation region by virtue of an increasing coupling, an outer barrel of the settling chamber is internally provided with a three-phase separation chamber, a gas collecting chamber is arranged above the three-phase separation chamber, a gas collecting hood separated from the settling chamber is arranged at the top of the gas collecting chamber, an air outlet is arranged at the top end of the gas collecting hood, the upflow reaction chamber comprises a plurality of subregion reaction chambers which are separated by semi-opened baffles, the openings of the baffles are downward, and the baffles are connected to the wall of the reactor body in a left-right cross connecting way, the subregion reaction chambers are communicated by virtue of the baffles, and the side of the reactor body at the upper part of each subregion reaction chamber is provided with an exhaust port used for escaping part of nitrogen. By adopting the bioreactor provided by the invention, effective separation of water, gas and mud is realized, sludge loss is reduced, short circuit is avoided, and effective working space of the bioreactor is increased.

Description

technical field [0001] The invention relates to an upflow type zoned anaerobic ammonium oxidation bioreactor. Background technique [0002] As a new process, the anammox biological nitrogen removal process has very powerful potential advantages. There are many reactors running the anammox process, but they usually have some defects, especially severe short flow and sludge loss, which can directly lead to the decline of the overall denitrification capacity of the anammox bioreactor. [0003] As a representative of the second-generation anaerobic bioreactor, the patent 200720149772.7 proposed an external circulation type upflow anaerobic sludge bed reactor. The water intake is set from the upper part of the suspension area, and the mixed solution is taken to the water inlet pipe for circulation, which is effective Increase the hydraulic load and gas production rate of the reaction zone without increasing the load of the three-phase separation zone and the volume of the sedime...

AI Technical Summary

Problems solved by technology

The up-flow anaerobic sludge bed reactor has a good retention capacity for sludge with excellent settling performance, but has a greatly reduced retention capacity for sludge with poor settling performance

For the high-efficiency anaerobic ammonium oxidation reactor, due to the large amount of gas produced by the granular sludge, its average density is reduced, and the settling performance is deteriorated, which affects the stability of the reactor operation.

In addition, in the sludge layer at the lower part of the reaction zone, due to the inhomogeneity of gas production, there is more gas production in some areas, forming an upwelling flow, resulting in short flow

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