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An a2/o-biological contact oxidation method for short-range nitrification coupled with denitrification and phosphorus removal

A technology of denitrification and phosphorus removal and biological contact, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of low efficiency of nitrogen and phosphorus removal, high energy consumption, etc. problems, to achieve the effect of stable treatment effect, convenient operation and management, and reduced volume and floor space

Active Publication Date: 2016-01-20
BEIJING UNIV OF TECH
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  • Claims
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Problems solved by technology

[0006] Aiming at the problems of low influent C / N, low denitrification and phosphorus removal efficiency, and high energy consumption in the current sewage treatment, the present invention couples two new nitrogen and phosphorus removal technologies, which is an economical and efficient technology that can realize deep denitrification Phosphorus removal device and method

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  • An a2/o-biological contact oxidation method for short-range nitrification coupled with denitrification and phosphorus removal
  • An a2/o-biological contact oxidation method for short-range nitrification coupled with denitrification and phosphorus removal

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing and embodiment the patent application is further described:

[0025] Such as figure 1 As shown, A 2 / O-Biological contact oxidation enhanced nitrogen and phosphorus removal device, the system is mainly composed of raw water tank 1, A 2 / O reactor 2, inclined plate sedimentation tank 3, biological contact oxidation tank 4, sedimentation area 5 and effluent water tank 6. The main body of the reactor is made of plexiglass, wherein the AAO reactor 2 has six compartments, the first compartment is the anaerobic zone 9, the next four compartments are the anoxic zone 10, and the last compartment is the aerobic zone 11. The volume is 40L, the hydraulic retention time is 5.0-12.0h; the agitation device 8 is installed in the anaerobic zone 9 and the anoxic zone 10, the residence time of the aerobic zone is shorter, and the dissolved oxygen is 2.5-4.0mg / L. Inclined plate sedimentation tank 3 is connected to A through overflow baffle...

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Abstract

The invention relates to an A2 / O-bio-contact oxidation device and method based on coupling of partial nitrification and denitrifying phosphorous removal and belongs to the field of biological treatment of sewage. The device mainly comprises an A2 / O reactor (comprising an anaerobic zone, an anoxic zone and an aerobic zone), a wobble plate sedimentation tank, a biological contact oxidation tank and a sedimentation zone, wherein the aerobic zone of the A2 / O reactor is connected with the wobble plate sedimentation tank by virtue of an overflow baffle, the wobble plate sedimentation tank is connected with the biological contact oxidation tank, and the biological contact oxidation tank is connected with the sedimentation zone; filler made from carbon fibers is arranged in the biological contact oxidation tank and is mainly used for completing partial nitrification; a sludge reflux pump is communicated with the bottom of the anaerobic zone of the A2 / O reactor, a nitrification liquor reflux pump is connected with an effluent tank and the anoxic zone of the A2 / O reactor to realize denitrifying phosphorus removal. The A2 / O-bio-contact oxidation device and method fully take advantages of partial nitrification and denitrifying phosphorous removal and have the advantages of conservation of carbon source, low aeration rate, low sludge yield and the like.

Description

technical field [0001] The invention relates to a short-range nitrification and denitrification dephosphorization coupled device and method for synchronous denitrification and dephosphorization, belonging to the technical field of sewage biological treatment. Background technique [0002] The problem faced by the traditional nitrogen and phosphorus removal process is: how to solve the problem of denitrifying bacteria and phosphorus accumulating bacteria competing for carbon sources and the sludge age of the two. People have done a lot of work for this before, such as adding carbon sources or changing the process to alleviate the contradiction between denitrifying bacteria and phosphorus accumulating bacteria on carbon sources, but these methods have brought energy waste, while denitrifying phosphorus accumulating bacteria The theory put forward a new way of thinking for simultaneous denitrification and phosphorus removal. Compared with the traditional denitrification and ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 彭永臻张淼王聪王淑莹薛晓飞庞洪涛
Owner BEIJING UNIV OF TECH
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