Method and device for realizing sewage short-cut nitrification and denitrification in SBR by utilizing sludge fermentation substances
A short-range nitrification and fermentation product technology, which is applied in water/sludge/sewage treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problem of limited application, difficulty in disposal of excess sludge, and insufficient carbon source of urban sewage and other issues to achieve the effect of improving the removal rate, realizing sludge reduction treatment, and saving costs
Inactive Publication Date: 2017-08-08
BEIJING UNIV OF TECH
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Problems solved by technology
However, the lack of carbon sources in urban sewage limits the application of traditional biological denitrification processes.
At the same time, sewage treatment plants will inevitably produce a large amount of excess sludge, and the treatment and disposal of excess sludge is also a major problem
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[0020] The patent application is further described in conjunction with accompanying drawings and examples: as figure 1 As shown, the present invention includes an excess sludge fermentation tank, a sludge fermentation mixture storage tank, a sewage water tank, and a sequencing batch reactor SBR. The effective volumes of the four devices are 5L, 3L, 30L, and 12L respectively, in which the excess sludge fermentation tank, sludge fermentation mixture storage tank and sequencing batch reactor SBR are made of plexiglass.
[0021] The device comprises that the excess sludge is pumped into the excess sludge fermentation tank (2) through the first pump peristaltic pump (1), and the first agitator (3) and a temperature control device (4) are installed in the excess sludge fermentation tank (2). , the first pH controller (5); the excess sludge fermentation tank (2) is connected with the fermentation mixture storage tank (9), and the fermentation mixture storage tank (9) is connected to ...
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The invention relates to a method and a device for realizing sewage short-cut nitrification and denitrification in SBR by utilizing sludge fermentation substances and belongs to the field of municipal sewage treatment and biochemical sludge treatment. According to the method provided by the invention, through differences in inhibitory activity of the added sludge fermentation substances to nitrifying bacteria (ammonia bacteria AOB and nitrite oxidizing bacteria NOB) (stronger inhibiting degree to NOB), the purpose of elutriating the NOB is achieved. The method provided by the invention is suitable for various operation modes of the SBR and realizes higher nitrite accumulation rate and total nitrogen removal rate by taking the AOA-SBR operation mode as an example, thereby achieving the purpose of deep denitrification of municipal domestic sewage with low C / N ratio. The method and the device provided by the invention have the benefits that through the mixed treatment of the surplus sludge fermentation substances and the domestic sewage, the problem that the domestic sewage cannot stably realize the short-cut nitrification can be solved, the additional carbon source cost can also be reduced, the denitrification efficiency is improved, and meanwhile, the sludge reduction treatment is realized.
Description
technical field [0001] The invention relates to a method and device optimization control for realizing short-range nitrification and denitrification of sewage in an SBR by using sludge fermentation products, and belongs to the fields of urban sewage treatment and sludge biochemical treatment. This process is suitable for enhanced deep denitrification of low C / N urban domestic sewage. Background technique [0002] Biological denitrification technology is widely used in urban domestic sewage treatment plants. However, the lack of carbon sources in urban sewage limits the application of traditional biological denitrification processes. At the same time, sewage treatment plants will inevitably produce a large amount of excess sludge, and the treatment and disposal of excess sludge is also a major problem. Residual sludge is the material produced during the biological treatment of sewage, and its main organic components are protein, carbohydrates and fat. The anaerobic ferment...
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IPC IPC(8): C02F3/30C02F3/34C02F101/30C02F101/16
CPCC02F3/303C02F3/34C02F2101/16C02F2101/30C02F2209/02C02F2209/06C02F2209/16C02F2209/22C02F2301/046C02F2303/06
Inventor 彭永臻刘瑾瑾张婷袁悦张琼
Owner BEIJING UNIV OF TECH
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