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A<2>/O denitrifying phosphorus removal device and method for bi-granule sludge improvement

A technology of denitrification phosphorus removal and double particles, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problem of low efficiency of nitrogen and phosphorus removal, large investment, and energy consumption of sewage plants High-level problems, to achieve the effect of preventing sludge loss, high microbial concentration, and reducing infrastructure costs

Inactive Publication Date: 2016-10-26
BEIJING UNIV OF TECH
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Problems solved by technology

[0006] Aiming at the problems of low C / N of urban domestic sewage, low nitrogen and phosphorus removal efficiency of traditional activated sludge process, high energy consumption and large investment of sewage plants, the present invention proposes double particle sludge improvement A 2 / O device and method for denitrification and phosphorus removal

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  • A&lt;2&gt;/O denitrifying phosphorus removal device and method for bi-granule sludge improvement
  • A&lt;2&gt;/O denitrifying phosphorus removal device and method for bi-granule sludge improvement

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Embodiment Construction

[0022] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0023] Such as figure 1 As shown, double granular sludge improvement A 2 / O denitrification phosphorus removal device, the device consists of raw water tank (1), A 2 / O reaction tank (2), intermediate sedimentation tank (3), aeration tank (4), secondary sedimentation tank (5) and nitrifying liquid storage tank (6) are connected in sequence, where A 2 The / O reaction pool (2) comprises five compartments, the first grid is the anaerobic zone (7), the next three grids are the anoxic zone (8), and the last grid is the aerobic zone (9); the raw water tank (1 ) is connected with the anaerobic zone (7) by the water inlet pump (14), and the agitating device (10) is installed respectively in the anaerobic zone (7) and the anoxic zone (8); the outlet water of the aerobic zone (9) passes through the first overflow pipe (19) enters intermediate set...

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Abstract

The invention provides an A<2> / O denitrifying phosphorus removal device and method for bi-granule sludge improvement and belongs to the field of biological sewage treatment. The A<2> / O denitrifying phosphorus removal device mainly comprises a raw water tank, an A<2> / O reaction tank, an intermediate sedimentation tank, an aeration tank, a secondary sedimentation tank and a nitrification liquor storage tank which are sequentially connected, wherein an anaerobic zone of the A<2> / O reaction tank is used for anaerobic phosphorus release reaction and connected with the intermediate sedimentation tank through a first sludge reflux pump, and an anoxic zone is used for denitrifying phosphorus removal and connected with the nitrification liquor storage tank through a nitrification liquor reflux pump; the aeration tank finishes oxidation of ammonia nitrogen, provides an electron acceptor for denitrifying phosphorus removal and is connected with the secondary sedimentation tank through a second sludge reflux pump. According to the A<2> / O denitrifying phosphorus removal device and method, denitrifying phosphorus removing bacteria and nitrifying bacteria are separated, the advantages of a two-sludge system and granule sludge are given into full play, and the advantages of carbon source conservation, excellent sludge settleability, high denitrification and phosphorous removal efficiency, strong resistance to impact load, stable effluent quality and the like.

Description

technical field [0001] The invention relates to double particle sludge improvement A 2 The invention relates to a device and method for denitrification and phosphorus removal, belonging to the technical field of sewage biological treatment. Background technique [0002] With the rapid development of my country's economy and the acceleration of urbanization, the national river pollution situation is severe, and the phenomenon of water eutrophication is serious. Eutrophication of water body seriously damages the natural environment of water body, degrades water quality, and even has a continuous impact on people's production, life and sustainable development. Therefore, improving the sewage treatment rate and overcoming the difficulties in denitrification and phosphorus removal of sewage are urgent problems to be solved at present. [0003] The difficulty of traditional sewage nitrogen and phosphorus removal lies in the competition between denitrifying bacteria and phosphoru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/30C02F2101/105
Inventor 王淑莹孙雅雯张建华彭永臻
Owner BEIJING UNIV OF TECH
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