Water influent allocation optimization method in segmental influent and biological denitrification process
A technology of influent flow and biological denitrification, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve distribution problems, achieve convenient operation and management, and easy process operation management , The effect of high total nitrogen removal rate
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specific Embodiment approach 1
[0028] Specific implementation mode 1: This implementation mode is realized in this way: the sewage enters the anoxic zone of the reactor in a segmented form, and is given priority to denitrifying bacteria for denitrification reaction, and then enters the aerobic zone for degradation and nitrification of organic matter The reaction, along the reactor, constitutes an anoxic / aerobic / anoxic / aerobic alternating operation structure in space, and the influent flow rate of each section in the reaction tank is distributed according to the following formula: Q 总 =λ max n-1 X+λ max n-2 X+…+λ max X+X, where: Q 总 is the total inflow flow, n is the number of sections, λ max is the maximum flow ratio, X is the inflow flow of the last section; where λ max =0.31423x-0.88799 (x is the C / N ratio of influent water).
[0029]In the stepwise influent biological denitrification method, there is a maximum flow ratio λ between every two adjacent stages max The nitrate produced by the nitrific...
specific Embodiment approach 2
[0032] Specific embodiment two: the implementation process of the present invention is relatively simple. In the implementation process, the maximum flow ratio coefficient λ between the last two sections can be determined through experiments, and then this ratio can be applied to other sections. Under the condition that the total influent flow Q is constant, set the influent flow in the last stage as X, which has the following relationship (take the four-stage process as an example): Q=λ 3 X+λ 2 X+λX+X. According to this formula, the inflow flow of each section can be obtained.
[0033] In this embodiment, beer wastewater, NH 4 Cl, MgSO 4 , CaCl 2 、KH 2 PO 4 and NaHCO 3 The simulated domestic sewage prepared with tap water was taken as the research object, and the experimental research work was carried out on the biological denitrification technology of sub-influential water. The operating parameters of the process are: a four-stage water inflow process is adopted, th...
specific Embodiment approach 3
[0038] Specific implementation mode three: In this implementation mode, the sewage of the living quarters of the second campus of Harbin Institute of Technology is used as the treatment object, and the applicability and implementability of the present invention are tested and verified, and satisfactory results have been achieved. The C / N ratio of domestic sewage in the community does not change much, ranging from 7.25 to 9.1. During the implementation process, the C / N ratio of the raw water quality is first measured, and then the flow ratio coefficient λ is determined according to the above table. During the three-month test process, the total nitrogen removal rate has been kept above 92.5%, achieving strong denitrification efficiency and operation effect, further proving that the invention has strong applicability and implementability. The invention simplifies the operation and management of the process by introducing the flow rate ratio coefficient, and provides the most impo...
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