A device and real-time control method for realizing the advanced treatment of secondary effluent of urban sewage by coupling partial nitrate reduction with ammonia oxidation
A technology for urban sewage and secondary effluent, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of insufficient utilization of organic carbon sources, low nitrite accumulation rate, Response is not easy to control and other problems, to achieve the effect of easy realization, low operating cost and convenient operation
Active Publication Date: 2021-12-31
BEIJING UNIV OF TECH
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Problems solved by technology
However, when using actual urban sewage short-range denitrification to treat low-concentration nitrate wastewater, there are often shortcomings such as insufficient utilization of organic carbon sources, low nitrite accumulation rate, and difficult control of the reaction.
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[0027] Influent water is pumped in from the urban sewage storage tank (3), the secondary outlet water storage tank (2) of the sewage treatment plant, and the external carbon source water tank (5) through the first water inlet pump (2.1) and the second water inlet pump (3.1) Sequencing batch SBR reactor (1); during the water inflow process, the COD concentration sensor (1.7), nitrate concentration sensor (1.8) and ammonia nitrogen concentration sensor (1.9) collect the corresponding chemical signals online and input them to the multi-parameter online monitor (1.10), then input the online parameter controller (6.1) through the online parameter signal receiving port (6.4) and process and calculate it by the computer (6.7), adjust the first water inlet pump (2.1) and the second water inlet pump (3.1) according to the calculation results And the speed of the external carbon source water inlet pump (5.1); when the water level in the reactor reaches the preset water level, the float l...
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A device and a real-time control method for realizing advanced treatment of secondary effluent of urban sewage by coupling ammonia oxidation with partial nitrate reduction belong to the technical field of sewage biological treatment. The invention utilizes the organic carbon source in urban sewage to provide electron donors with nitrate partial reduction coupled with ammonium oxidation to realize the secondary effluent advanced treatment of urban sewage, and an automatic control system is equipped in the sequencing batch SBR reactor, including chemical oxygen demand, ammonia nitrogen , Nitrate nitrogen online monitoring sensor, the NH collected online 4 + -N, NO 3 ‑ ‑N and COD signals are input to the online parameter controller, and by setting the automatic control program, the adjustment signal is output and acted on the controllers of each execution unit to timely adjust the COD / NO in the reactor 3 ‑ ‑N and NH 4 + ‑N / NO 3 ‑ ‑N mass concentration ratio. The invention improves the denitrification efficiency of the anaerobic ammonium oxidation process of urban sewage, fully utilizes the organic carbon source in the urban sewage, improves the accumulation efficiency of nitrite and reduces operating costs, is easy to operate, and can realize stable and efficient denitrification of urban sewage.
Description
technical field [0001] The invention relates to a device and a real-time control method for realizing the advanced treatment of secondary effluent of urban sewage by coupling ammonia oxidation with partial nitrate reduction, and belongs to the technical field of sewage biological treatment. It is suitable for the secondary effluent of urban sewage and sewage treatment plants containing nitrate, making full use of the organic carbon source in urban sewage to reduce nitrate to nitrite, providing substrate for subsequent anaerobic ammonium oxidation, and realizing the depth of urban sewage denitrification. Background technique [0002] Anaerobic ammonium oxidation technology means that anammox bacteria convert ammonia nitrogen and nitrite nitrogen in water into nitrogen and a small amount of nitrate nitrogen. This technology has the advantages of no need for aeration, no need for additional carbon sources, and small sludge production. , is one of the autotrophic biological den...
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IPC IPC(8): C02F3/12C02F101/16
CPCY02W10/10
Inventor 彭永臻范泽里杜睿王淑莹
Owner BEIJING UNIV OF TECH