Two-segment aerobic-anaerobic ammonia oxidization reactor

Abstract

The invention discloses a two-segment aerobic-anaerobic ammonia oxidization reactor. The reactor comprises an anaerobic segment water distribution disc, anaerobic segment biological filler grating plates, an anaerobic segment biological filler, an aerobic segment water distribution disc, an aerobic segment biological filler, and aerobic segment biological filler grating plates. The reactor is characterized in that the reactor which is cylindrical in shape has an upper segment and lower segment integration structure, the upper segment is the aerobic segment, the lower segment is the anaerobic segment, the anaerobic segment water distribution disc is arranged in the bottom of the anaerobic segment, the anaerobic segment biological filler grating plates are symmetrically arranged in the middle part of the anaerobic segment, the anaerobic segment biological filler is arranged among the anaerobic segment biological filler grating plates, the aerobic segment water distribution disc is arranged between the anaerobic segment and the aerobic segment, the aerobic segment biological filler grating plates are symmetrically arranged in the middle part of the aerobic segment, and the aerobic segment biological filler is arranged among the aerobic segment biological filler grating plates. The reactor which allows the rapid screening of ammonia oxidizing bacteria by a biological system to be guaranteed has the advantages of benefiting of the high efficiency interception of the ammonia oxidizing bacteria, removal efficiency improvement, mass transfer effect improvement, water dilution, andimpact load resistance improvement, and is suitable for high ammonia nitrogen and low C / N ratio wastewater processing.

Description

Technical field: [0001] The invention belongs to the field of waste water and sewage treatment equipment, and in particular relates to a two-stage aerobic-anammox reactor. Background technique: [0002] At present, sewage biological denitrification technology has been widely used in the treatment of domestic sewage and industrial waste (sewage) water. With the improvement of water treatment standards in my country and the contradiction between energy shortage and other problems and traditional technologies, the development and application of new low energy consumption The biological nitrogen removal process is particularly important. [0003] Traditional biological denitrification technologies mainly include A / O process, SBR process, oxidation ditch process, etc. The main problems are: 1) The denitrification process is long, occupies a large area, and requires high infrastructure investment; 2) The proliferation of nitrifying bacteria The speed is slow, the denitrification r...

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Problems solved by technology

[0003] Traditional biological denitrification technologies mainly include A / O process, SBR process, oxidation ditch process, etc. The main problems are: 1) The denitrification process is long, occupies a large area, and requires high infrastructure investment; 2) The proliferation of nitrifying bacteria The speed is slow, the denitrification reaction time is long, and it is difficult to maintain a high biological concentration, especially in the low-temperature autumn and winter seasons, the denitrification efficiency decreases; 3) The process requires sludge and nitrifying liquid backflow, which increases power consumption and operating costs ; 4) The impact resistance of the system is weak, and high-concentration ammonia nitrogen and nitrite wastewater will inhibit the growth of nitrifying bacteria; 5) The acidity generated during the nitrification process needs to be neutralized by adding alkali, which increases the treatment cost and may cause secondary pollution. pollution; 6) The two processes of nitrification and denitrification need to form an anoxic and aerobic environment alternately in different reaction devices, and the operation process is complicated; 7) When the organic carbon content in the wastewater is low, the denitrification process will cause Insufficient organic carbon source for denitrification affects the stability and treatment effect of microorganisms

However, supplementing carbon sources requires an increase in operating costs

[0004] Most of the existing anaerobic ammonium oxidation reactors are evolved from barbaric oxygen reactors. Based on UASB, EGSB, and IC, the reactors have serious sludge loss, difficult enrichment of ammonia oxidizing bacteria, long start-up time, and easy reactors. In case of problems such as air surge and poor removal effect, the anaerobic ammonium oxidation reactor often needs to be placed in front or behind an aerobic tank, which is controlled in the nitrification stage, and ammonia nitrogen is oxidized into nitrite by nitrous bacteria, split reaction, Split control, complex process, poor operation stability, difficult to popularize and apply

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