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Treating technical method for denitrogenation and dephosphorization from waste water

A technology for denitrification and phosphorus removal and treatment process, which is applied in the field of sewage denitrification and phosphorus removal treatment process to achieve the effects of reduced infrastructure and operating costs, improved phosphorus removal efficiency, and easy maintenance and management

Inactive Publication Date: 2004-03-10
毕学军
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the existing biological denitrification and phosphorus removal technology in the treatment of urban sewage technology, the present invention aims at the shortcomings of the process in the prior art, and adopts the inverted A / A / O process to achieve the effect of nitrogen and phosphorus removal

Method used

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Embodiment approach

[0008] According to the equipment layout process of the existing conventional biological treatment for nitrogen and phosphorus removal process, the anoxic zone is inverted before the anaerobic zone, so that the three pool zones form anoxic / anaerobic / aerobic process layout in sequence, and the first Before entering the anoxic zone, the treated sewage undergoes short-term preliminary precipitation for 0.5-1.0 hours to remove large particles of impurities and then enters the anoxic zone for 2-3 hours of denitrification and denitrification; then the denitrified mixed solution enters the Anaerobic zone, allowing organic matter to absorb organic matter and anaerobic phosphorus release for 2 to 3 hours under anaerobic conditions, and then let the mixed solution enter the aerobic zone, so that organic matter can be removed after 6 to 10 hours of aerobic degradation, and at the same time realize Aerobic nitrification of nitrogen and aerobic uptake of phosphorus. Afterwards, the mixed l...

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Abstract

A process for denitrifying and dephosphorizing sewage features use of biological treating method in such manner that the anoxic condition, anaerobic condition and aerobic condition are sequentially arranged. Its advantages are no conflict in carbon source and sludge age, and high effect.

Description

Technical field: [0001] The invention relates to a process method for treating sewage by using biological technology, in particular to an inverted A / A / O process method for denitrification and phosphorus removal of urban sewage. Background technique: [0002] Urban sewage (biological) treatment technology has gone through three stages of development. In the early stage of the development of sewage treatment technology, people realized the harm of organic pollution to the environment and ecology, so the removal technology of aerobic organic pollutants (COD) and suspended solids (SS) was taken as the main goal of sewage treatment. By the 1960s and 1970s, with the popularization of conventional secondary biological treatment technology in industrialized countries, it was found that it was not enough to remove COD and SS. The existence of ammonia nitrogen (NH3-N) still leads to black odor and low dissolved oxygen in the water body. The emergence of this problem has led to the de...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/14
Inventor 张波毕学军高廷耀
Owner 毕学军
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