A sewage autotrophic denitrification treatment method and device
A technology of autotrophic denitrification and treatment device, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The operation control process is complicated and other problems, so as to improve the effluent quality, reduce the project investment and operation cost, and achieve the effect of flexible control.
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Embodiment 1
[0036] Example 1 Sewage autotrophic denitrification treatment device
[0037] Such as figure 2 As shown, the present invention provides a kind of urban sewage autotrophic denitrification treatment device, which includes a pre-denitration reactor 1, a short-range nitrification reactor 2, a regulating tank 3, anammox reactor 4; the pre-denitration Reactor 1, short-range nitrification reactor 2, regulating tank 3, and anammox reactor 4 are connected sequentially through the main water inlet pipeline. The outlet water of 1 is introduced into the water inlet branch of the regulating tank 3, and the outlet water of the anaerobic ammonium oxidation reactor 4 can be refluxed to the pre-denitration reactor 1 between the anaerobic ammonium oxidation reactor 4 and the pre-denitration reactor 1 the return line.
[0038] In addition, the pre-denitration reactor 1 is provided with a water inlet pipe 11, a return pipe 44 and a first vent pipe 12, and the short-path nitrification re...
Embodiment 2
[0043] Example 2 A sewage autotrophic denitrification treatment method
[0044] Get the domestic sewage of Guangzhou urban sewage plant and carry out autotrophic denitrification treatment of the present invention, main water quality index is as follows before processing: CODcr=120mg / L, NH 4 + -N=30mg / L, TN=32mg / L, pH=7.2. combine figure 1 (Schematic diagram of the process flow of sewage autotrophic denitrification treatment method) and figure 2 (Schematic diagram of sewage autotrophic denitrification device) The treatment process is explained as follows.
[0045] 1) Pre-denitration treatment: During operation, the urban sewage is pretreated by slag removal and then enters the pre-denitration reactor 1 through the water inlet pipe 11 (the total amount of sewage treatment is denoted as Q), and at the same time, the 4 parts of the effluent of the anammox reactor are passed through The reflux pipe 44 is introduced into the pre-denitration reactor 1, and the two are mixed...
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