A method for optimizing the control of aeration flow to realize simultaneous denitrification and phosphorus removal of domestic sewage in high altitude areas

Abstract

The invention discloses a method for optimizing and controlling aeration flow to realize synchronous denitrification and dephosphorization of domestic sewage in high-altitude areas. In view of the problem that the dissolved oxygen in the domestic sewage treatment system in high altitude areas is not properly controlled at this stage, resulting in poor nitrogen and phosphorus removal effects, this method uses an anaerobic / aerobic SBR reactor, and optimizes the control of the aeration flow to make the dissolved oxygen in the reactor The (DO) concentration is 0mg / L~2.5mg / L, which ensures the stable operation of the reactor in a low-pressure and low-oxygen environment, and realizes the simultaneous denitrification and phosphorus removal of domestic sewage in high-altitude areas. This method makes the anaerobic / aerobic SBR reactor reduce the system's demand for dissolved oxygen during operation, and realizes reasonable control of dissolved oxygen concentration by optimizing and controlling the aeration flow rate, which is compatible with pure oxygen aeration, high-pressure aeration and long-term Compared with the long-term high-power aeration method, this method is more scientific and energy-saving.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for optimizing and controlling aeration flow to realize synchronous denitrification and dephosphorization of domestic sewage in high-altitude areas. Background technique [0002] In recent years, due to economic development and regional development, environmental protection problems in high-altitude areas such as Tibet have become increasingly prominent, especially the treatment of urban domestic sewage is still in its infancy. The most significant external objective environmental factors in high altitude areas are high altitude and the large temperature difference caused by high altitude, strong ultraviolet rays, and low air pressure. [0003] Due to the high altitude, low air pressure, large temperature difference, and low annual average temperature, the construction of sewage treatment plants in these areas has special requirements for sewage trea...

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Problems solved by technology

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method for optimizing and controlling the aeration flow rate to realize the simultaneous denitrification and phosphorus removal of domestic sewage in high altitude areas, and to solve the problem of irregular aeration, dissolved Unreasonable control of oxygen concentration and high energy consumption during operation

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