Device for treating high-concentration ammonia nitrogen in refinery wastewater by using surface activity catalyst

Abstract

The invention relates to a device for treating high-concentration ammonia nitrogen in refinery wastewater by using a surface activity catalyst, belonging to the field of sewage treatment. The device is composed of a wastewater inlet (1), a surfactant inlet (2), a pipeline mixer (3), an injection pipe (4), a heavy metal catalyst network (5), a denitrification cylinder outer shell (6), a denitrification cylinder inner shell (7), a wastewater channel (8), a wastewater outlet (9), a diversion intake port (10) and a blast blower (11), wherein the surfactant inlet (2) is positioned above the pipeline mixer (3) and connected with the pipeline mixer (3); the wastewater inlet (1) is connected with the pipeline mixer (3); and the pipeline mixer (4) is positioned above the heavy metal catalyst network (5). The device is simple in technique and feasible in operation, can directly reduce the ammonia nitrogen in the refinery wastewater into nitrogen to be discharged, can not cause secondary pollution to the environment, and has the advantages of low cost and high ammonia nitrogen removal ratio. The ammonia nitrogen removal ratio in the high-concentration ammonia nitrogen wastewater treated by the device can reach 99.9% above.

Description

technical field [0001] The invention discloses a device for treating high-concentration ammonia nitrogen in oil refinery wastewater with a surface active catalyst, belonging to the field of sewage treatment. Background technique [0002] Refining wastewater is polluted water that cannot be directly used during the production and operation of the refining and chemical industry. The wastewater contains high concentrations of ammonia nitrogen. Excessive ammonia nitrogen discharge into the water body will lead to eutrophication of the water body, reduce the ornamental value of the water body, and be oxidized. Nitrates and nitrites can also affect aquatic life and even human health. [0003] At present, it is possible to convert high-concentration ammonia-nitrogen in wastewater into nitrogen by using catalyst catalysis. Co / Bi catalysts are used to treat high-concentration ammonia-nitrogen wastewater, and ammonia gas is directly converted into nitrogen gas for emission, but it ne...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high operating cost, secondary pollution and low ammonia nitrogen removal rate in the existing technical solutions, and provides a surface active catalyst for treating high concentration ammonia nitrogen in oil refinery wastewater, which solves the problem of large pollution in the prior art. High cost and low removal rate of ammonia nitrogen

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