Bioaugmentation treatment technology of high ammonia nitrogen wastewater

Abstract

The invention relates to a bioaugmentation treatment technology of the high ammonia nitrogen wastewater. The treatment technology is characterized in that under the condition that dissolved oxygen exists in the high ammonia nitrogen wastewater, an aerobic pool, an aerobic filter and a membrane pool are established, wherein by utilizing the metabolism of the aerobic microorganism, high concentration of organic substances are degraded, the organic substances with high molecular weight and energy are converted to substances with low molecular weight and energy; the aerobic pool adopts internal circulation and large-scale external circulation hydraulic agitation; and the aerobic filter is filled with novel fixed enzyme-floating filler and immobilized microorganism and microporous aeration and jet aeration are combined for aeration, thus the flow pattern of the nitrification filter is improved. Compared with the prior art, the system of the invention has high sludge concentration and the corresponding volume loading is also high, thus the floor space is small and the capital cost is low; the conversion rate and utilization rate of atmospheric oxygen is high, the effect of mass transfer is good, the anti-shock loading capability of the system is high, the effluent quality is stable; the operating cost is low; the density is increased relatively, the solid-liquid separating effect is good and the yield of excess sludge is low.

Description

technical field [0001] The invention relates to a high-ammonia-nitrogen wastewater treatment process, which belongs to the technical field of water treatment, and in particular to a biointensified treatment process for high-ammonia-nitrogen wastewater. Background technique [0002] In recent years, industries such as coking, pesticides, fertilizers, chemicals, and rare earth smelting have developed rapidly, and a large amount of high-concentration ammonia nitrogen wastewater has been discharged accordingly. The discharge of a large amount of ammonia nitrogen into the water body will lead to eutrophication of the water body. The eutrophication of the water body will not only reduce the dissolved oxygen in the water, destroy the original natural ecological environment of the water body, but also affect the water safety and sanitation of the water source, and lose the original quality of the water body. Function. For urban sewage treatment plants, the discharge of high-ammonia...

AI Technical Summary

Problems solved by technology

However, the traditional biological denitrification process such as A / O method, A 2 / O method, etc., still have the following problems: ①The nitrifying bacteria group is difficult to maintain a high biological concentration due to the slow proliferation rate, so the total hydraulic retention time of the system is longer, the load is lower, and the infrastructure investment and operating costs are increased; ②The impact resistance is weak. When the influent water quality changes greatly, the operation of the system will be seriously affected

③The ability to treat high ammonia nitrogen water is poor. When the concentration of ammonia nitrogen in the biochemical system is higher than 500mg / L, it will seriously inhibit microorganisms, which will affect the stable operation of the system and the quality of effluent water

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