A kind of regeneration scr denitrification catalyst wastewater treatment process

Abstract

The invention relates to a waste water treatment process of a regenerated SCR denitrification catalyst, which belongs to the technical field of industrial waste water treatment. A biofilm reactor is arranged in the treatment pool. The technical scheme first adds chemical agents to the dosing reaction tank to remove most of the suspended solids, some organic matter and heavy metal ions in the wastewater, and then removes phosphorus and nitrogen in the wastewater through the A2O biochemical treatment tank, and passes through the biofilm reactor. At the same time, the biofilm can effectively retain the activated sludge in the A2O biochemical treatment tank, so that the treated sewage can meet the discharge standard and can be used in industrial production again, which has beneficial technical effects and significant practical value .

Description

technical field [0001] The invention relates to a waste water treatment process, in particular to a waste water treatment process of a regenerated SCR denitrification catalyst, belonging to the technical field of industrial waste water treatment. Background technique [0002] Flue gas denitrification technology is an effective means to control nitrogen oxide emissions. Selective Catalytic Reduction (SCR) has many advantages such as high denitrification efficiency, no by-products in the reaction process, simple equipment, reliable operation, and convenient maintenance. Widely used at home and abroad. At present, the commonly used commercial SCR denitrification catalysts are vanadium-titanium series, especially for the regeneration process of spent denitrification catalysts after the service life is reached, the content of suspended solids (SS) in the cleaning process wastewater is relatively high, and some catalysts also contain The active ingredient is V 2 o 5 、WO 3 etc....

AI Technical Summary

Problems solved by technology

At present, the commonly used commercial SCR denitrification catalysts are vanadium-titanium series, especially for the regeneration process of the spent denitrification catalyst after the service life is reached, the content of suspended solids (SS) in the wastewater in the cleaning process is relatively high, and it also contains some catalysts. The active ingredient is V 2 o 5 、WO 3 etc., so its production wastewater also contains corresponding salts and ammonia nitrogen pollutants. If it is not treated, it will be directly discharged into the external environment, which will lead to eutrophication of the water body.

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