Sewage treatment reactor and treatment method thereof

Abstract

The invention relates to a sewage treatment reactor and a treatment method thereof. The reactor comprises a box body, a water inlet pipe and a water outlet pipe, the water inlet pipe is installed at the bottom of the box body, the water outlet pipe is installed at the top of the box body, and an upper-layer aeration assembly, a flow guide assembly and a lower-layer aeration assembly are sequentially arranged in the box body from top to bottom; and the area where the upper-layer aeration assembly is located and the upper part are aerobic areas, and the area where the lower-layer aeration assembly is located is an anoxic area or an anaerobic area. Through the arrangement of a double-layer aeration assembly and a flow guide assembly, mixed liquid in the upper area and the lower area of the reactor can flow back and reach an extremely high reflux ratio, nitrification, denitrification and synchronous nitrification and denitrification reactions can occur in the reactor, accurate regulation and control of dissolved oxygen are assisted, and short-cut nitrification and denitrification, synchronous short-cut nitrification and denitrification and anaerobic phosphorus removal reaction can occur in the reactor, so that the sewage treatment efficiency is greatly improved.

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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