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Granular sludge integrated autotrophic nitrogen removal device and operating method thereof

A technology of granular sludge and autotrophic denitrification, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of enriching anammox bacteria and reduce nitrate The effect of nitrogen generation, reduction of floor space, and increase of aeration

Active Publication Date: 2013-07-24
BEIJING DRAINAGE GRP CO LTD
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Problems solved by technology

[0009] At present, the problems to be solved in the popularization and application of the anammox process include: how to effectively retain and enrich the anammox bacteria in the reactor; how to improve the stability of the reaction operation and reduce the complexity of maintenance operation

Method used

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  • Granular sludge integrated autotrophic nitrogen removal device and operating method thereof

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Embodiment Construction

[0022] In conjunction with the accompanying drawings and examples, the patent application is further described: as figure 1 As shown, the granular sludge integrated autotrophic denitrification device of the present invention is composed of an inlet water tank 1 , an inlet pump 2 and an integrated anammox reactor 3 . The volume of the water inlet tank 1 is 400L, and the total volume of the integrated anammox reactor 3 is 20L, of which the effective volume is 15L. Air compressors are used for aeration and gas return.

[0023] The influent water used in the example is high ammonia nitrogen sludge dehydration liquid, which is taken from the sludge dehydration room of Beijing Gaobeidian Sewage Treatment Plant. The average concentration of ammonia nitrogen in the influent water is 410mg / L, and the COD is 200mg / L, which is stored in the influent water tank 1 before use.

[0024] Utilize the operation method step of above-mentioned device as follows:

[0025]1) Inoculation sludge: ...

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Abstract

The invention discloses a granular sludge integrated autotrophic nitrogen removal device, which is provided with a water feed tank and an integrated anammox reactor, wherein the reactor is provided with a shell, a reaction area and a settling area are arranged in the shell, and the reaction area is provided with a microporous aerator, a fixed packing layer and a top area; the settling area is provided with an inclined plate settling area, an overflow weir and a water outlet pipeline; a guide plate and a reflow hole are formed between the reaction area and the settling area; the top of the reaction area has an air return port and an air outlet; and a sludge discharge pipeline is arranged at the bottom of the reaction area. The operating method comprises the following steps of (1) seeding sludge; (2) starting stage; and (3) continuous operation. The device and the method disclosed by the invention are suitable to be used for carrying out side treatment on high-ammonia-nitrogen and low-carbon-nitrogen-ratio digested sludge dewatering liquid in urban sewage treatment plants, and also suitable to be applied to the denitrification treatment of other high-ammonia-nitrogen industrial wastewater. The device and the method disclosed by the invention are perfect in process, simple in operation, agile in control, low in operation cost, good in sewage treatment effect and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and belongs to the technical field of biochemical sewage treatment. Specifically, it is a device and a method for treating high ammonia nitrogen wastewater by using anaerobic ammonium oxidation technology. The device uses granular sludge as a carrier, enriches ammonia oxidizing bacteria and anammox bacteria at the same time, and realizes economical and efficient denitrification through the synergistic effect of the two bacteria. This process is suitable for side treatment of digested sludge dehydration liquid with high ammonia nitrogen and low carbon nitrogen ratio in urban sewage treatment plants; it is also suitable for denitrification treatment of other high ammonia nitrogen industrial wastewater. Background technique [0002] In the "Twelfth Five-Year" national economic and social development planning outline, the goal of reducing ammonia nitrogen emissions by 10% is clearly stated....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/38
Inventor 蒋勇张树军甘一萍常江张亮马斌孟春霖韩晓宇杨岸明
Owner BEIJING DRAINAGE GRP CO LTD
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