A sewage treatment reactor and its treatment method

Abstract

The invention relates to a sewage treatment reactor and a treatment method thereof. The reactor includes a tank body, a water inlet pipe and a water outlet pipe. The water inlet pipe is installed at the bottom of the tank body, and the water outlet pipe is installed at the top of the tank body. Inside the box, there are upper aeration components, diversion components and lower aeration components in sequence from top to bottom. oxygen zone. Through the setting of double-layer aeration components and diversion components, the mixed liquid in the upper and lower regions of the reactor can be refluxed and reach a very high reflux ratio, and the reaction of nitrification and denitrification and simultaneous nitrification and denitrification can occur in the reactor, auxiliary With the precise regulation of dissolved oxygen, short-cut nitrification and denitrification, synchronous short-cut nitrification and denitrification, and anaerobic phosphorus removal reactions can occur in the reactor, thereby greatly improving the efficiency of sewage treatment.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment reactor and a treatment method thereof. Background technique [0002] The mainstream biochemical treatment process in existing municipal sewage treatment plants is the A / O or A2 / O process with denitrification and phosphorus removal, and the denitrification is mainly realized through the biological reaction of aerobic nitrification and anoxic denitrification. Since the nitrifying liquid in the aerobic zone must be returned to the pre-anoxic zone to complete denitrification and denitrification, in order to meet the effluent standard, a large return pump is usually required to provide a large amount of nitrifying liquid backflow (reflux ratio up to 3-4 times). [0003] At present, the sewage treatment standards are becoming increasingly stringent, and the concentration of total nitrogen in the effluent needs to be further reduced. This requires the traditional proc...

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Problems solved by technology

[0003] At present, the sewage treatment standards are becoming increasingly stringent, and the concentration of total nitrogen in the effluent needs to be further reduced. This requires the traditional process to use a higher-power reflux pump to provide a nitrifying liquid with a greater reflux ratio, which will also increase power consumption and increase Equipment cost and energy consumption cost

[0004] At the same time, under the background of realizing the "double carbon" goal, the sewage treatment industry must save energy and reduce emissions, which has formed a technical contradiction that cannot be resolved at present

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