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A device and method for deep denitrification of domestic sewage by a mainstream endogenous short-range denitrification/anammox process

A short-range denitrification and anaerobic ammonia oxidation technology, which is applied in the field of low C/N ratio urban sewage treatment, can solve the problems of insufficient carbon source, difficult to treat sewage, low carbon and nitrogen ratio, etc., and achieves simple operation control, economical and efficient. The effect of denitrification and saving carbon source demand

Active Publication Date: 2020-07-03
BEIJING UNIV OF TECH
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Problems solved by technology

my country's urban sewage has a low carbon-to-nitrogen ratio (C / N) and a serious shortage of carbon sources, which makes it difficult for the traditional biological denitrification process to treat the sewage up to standard

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  • A device and method for deep denitrification of domestic sewage by a mainstream endogenous short-range denitrification/anammox process

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the present invention will be described in further detail: as figure 1 As shown, a mainstream endogenous short-range denitrification / ANAMMOX process to achieve deep denitrification of domestic sewage device: including urban sewage raw water tank (1), endogenous short-range denitrification reactor (2), intermediate water tank I ( 3), nitrification reactor (4), intermediate water tank II (5), anaerobic ammonium oxidation reactor (6); it is characterized in that, the urban sewage raw water tank (1) is connected with the internal source through the inlet pump I (2.1) The short-range denitrification reactor (2) is connected; the internal source short-range denitrification reactor (2) is connected to the nitrification reactor (4) through the inlet pump II (4.1); the nitrification reactor (4) is connected through the drain valve III (4.2) Connect the intermediate water tank I (3); the intermediate water tank I (3) i...

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Abstract

The invention discloses a device and method for realizing deep denitrification of domestic sewage by a mainstream endogenous short-range denitrification / anammox process. The device includes: a city sewage raw water tank, an endogenous short-range denitrification reactor, an intermediate water tank I, a nitrification reactor, an intermediate water tank II, and an anammox reactor. The method is that urban sewage first enters an endogenous short-range denitrification reactor, and microorganisms ingest organic matters in raw water and convert them into PHAs. Then, the sewage enters the nitrification reactor for full nitrification. The nitrified sewage enters the endogenous short-range denitrification reactor again to realize the conversion of nitrate nitrogen to nitrite nitrogen. Then, the sewage enters the anammox reactor to realize autotrophic deep denitrification. This method can stably realize the mainstream anammox of urban sewage with low C / N ratio, without additional carbon source, saving aeration, low sludge production, simple operation control, and realizes urban sewage treatment with high efficiency and low energy consumption.

Description

Technical field: [0001] The invention relates to a device and method for realizing deep denitrification of domestic sewage by a mainstream endogenous short-range denitrification / anammox process, and belongs to the technical field of low C / N ratio urban sewage treatment. Background technique: [0002] Sewage denitrification treatment is extremely important to protect water resources, but strict discharge standards mean excessive energy consumption. Therefore, economical and effective biological denitrification process has been widely studied and applied. my country's urban sewage has a low carbon-to-nitrogen ratio (C / N) and a serious shortage of carbon sources, making it difficult for traditional biological denitrification processes to treat the sewage up to standard. However, ANAMMOX technology can achieve efficient denitrification without carbon source, reduce the demand for carbon source and energy, and have low sludge production, so it has become a hot research topic at ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/34C02F101/16
CPCC02F3/302C02F3/34C02F2101/16C02F2203/006
Inventor 彭永臻吉建涛买文可吴蕾
Owner BEIJING UNIV OF TECH
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