Up-flow anaerobic ammonium oxidation granular sludge rectangular bed

Abstract

An up-flow anaerobic ammonium oxidation granular sludge rectangular bed comprises a reactor main body which is divided into a water inlet buffer area, an up-flow reaction chamber and a three-phase separating area from bottom to top; the water inlet buffer area is provided with a water inlet pipe connected with the exterior, the water inlet pipe is connected with an annular water distributor, and the annular water distributor is provided with small water outlets at the lower end; the water inlet buffer area below the annular water distributor is provided with a filter screen, and the reactor main body below the filter screen is provided with a mud discharging port; the up-flow reaction chamber is connected with the settling chamber of the three-phase separating area via a diverging pipe; the three-phase separating area is divided into a settling area, a three-phase separating chamber and a gas collecting chamber; the settling chamber is disposed at the bottom periphery of the three-phase separating chamber and is communicated with the inner cavity of the diverging pipe via a sludge backflow seam; the gas collecting chamber is connected with the top of the three-phase separating chamber; the top of the gas collecting chamber is provided with a gas collecting hood; and the top of the gas collecting hood is provided with a gas outlet. The up-flow anaerobic ammonium oxidation granular sludge rectangular bed has the beneficial effects that: effective separation for water, gas and mud is realized, sludge loss is reduced, short flow is avoided, and the reactor is increased in effective working volume.

Description

technical field [0001] The invention relates to an upflow type anaerobic ammonium oxidation granular sludge rectangular bed. Background technique [0002] Anaerobic ammonia oxidation biological denitrification process has strong advantages as a new process. There are many reactors running the anammox process, but there are usually some defects, especially the large proportion of dead zone and sludge loss 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...

AI Technical Summary

Problems solved by technology

For high-efficiency anaerobic ammonium oxidation reactors, due to the large amount of gas produced by granular sludge, the average density decreases and the settling performance deteriorates, which in turn affects the stability of the reactor performance.

In addition, it is easy to form a dead angle in a place far away from the fusion of air and water.

The common circular cross-section granular sludge bed also has the disadvantages of weak impact resistance and low mixing degree, and it has high requirements for site selection

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