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Efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage

A technology for urban sewage, nitrogen and phosphorus removal, applied in the field of sewage treatment, can solve problems such as poisoning, achieve the effect of reducing organic load, saving energy consumption, and saving energy and reducing consumption.

Active Publication Date: 2014-07-23
BEIJING UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

However, how to achieve the stability of short-term denitrification and the toxic effect of nitrite accumulation on microbial metabolism in the short-term denitrification process are the biggest problems restricting the application of short-term denitrification technology.

Method used

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  • Efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage
  • Efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage
  • Efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and technical solutions.

[0038] refer to figure 1 Shown is a schematic structural diagram of a control device for a low-carbon source urban sewage high-efficiency denitrification and phosphorus removal process, wherein the raw water tank 1 is connected to the water inlet pump 2 and the water inlet valve 3 through the water inlet pipe; the SBR reactor 4 is connected to the water inlet pipe, outlet Water pipe, aeration pipe, overflow pipe 27 and sampling port 25; water outlet valve 26 is arranged on the water outlet pipe; aeration pipe is connected with rotameter 6 and air pump 5.

[0039] In the SBR reactor, there are built-in agitator 8, sticky sand block aeration head 7, heating rod 9, dissolved oxygen concentration DO sensor 12, pH sensor 14 and oxidation-reduction potential ORP sensor 16; , pH measuring instrument 13 and ORP measuring instrument 14 are con...

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Abstract

The invention relates to efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage and belongs to the technical field of sewage treatment. The method comprises the following steps: alternately caring out anoxic and aerobiotic operations under a condition of real-time control when low carbon source urban sewage enters into a reaction in a progressive decreasing water inlet mode, and fully utilizing limited carbon source organic matters in raw water; carrying out anaerobic phosphorus release and removing the organic matters in a first section: an anaerobic section, and controlling the anaerobic stirring time by monitoring ORP (Oxidation-Reduction Potential) in real time; carrying out denitrification by fully utilizing the organic matters in raw water in the second anoxic sections, and controlling the anoxic stirring time by monitoring pH and ORP values in real time; mainly carrying out aerobiotic phosphorus absorption and short-range nitrification in the third aerobic section, and controlling the aerating time by monitoring the DO (Dissolved Oxygen) and pH value in real time. By accurately judging the reaction endpoints of nitrification and denitrification by real time control, the reaction time is saved, and alternative anoxic and aerobiotic operations are stable to denitrify in a short range for the system, so that the device and method have the advantages of improving the reaction rate, reducing the energy consumption and saving the outer carbon source, efficiently and simultaneously removing phosphorus and nitrogen and the like.

Description

technical field [0001] The invention relates to a pulse type SBR based on short-range nitrification and denitrification device and process for strengthening the efficient denitrification and dephosphorization of low-carbon source urban sewage, which belongs to the field of sewage treatment. Background technique [0002] The eutrophication of water bodies caused by nitrogen and phosphorus elements has become a global problem. In order to solve this problem, people have formulated more and more stringent sewage discharge standards, and at the same time people are constantly improving sewage treatment processes. Biological treatment is the most economical method for the removal of nitrogen and phosphorus from municipal sewage. However, insufficient carbon sources in sewage make it impossible for sewage treatment plants to achieve efficient nitrogen and phosphorus removal. Therefore, solving the limiting problem of raw water carbon source has become an important research direc...

Claims

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Application Information

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IPC IPC(8): C02F3/30
Inventor 彭永臻刘文龙苗圆圆王淑莹
Owner BEIJING UNIV OF TECH
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