Efficient treatment system and efficient treatment method for electroplating wastewater

Abstract

The invention discloses an efficient treatment system and an efficient treatment method for electroplating wastewater. The treatment system comprises at least one degradation sedimentation basin, an ion exchange pool, a biological treatment tank, a sedimentation tank and a primary activated carbon filter, wherein wastewater in the degradation sedimentation basin is treated by Fenton reaction and coagulating sedimentation; the ion exchange pool is connected with the degradation sedimentation basin and is used for treating effluent treated by the degradation sedimentation basin through ion exchange resin in the ion exchange pool; the biological treatment tank is connected with the ion exchange pool and is used for treating effluent treated by the ion exchange pool through aerobic sludge in the biological treatment tank; the sedimentation tank is connected with the biological treatment tank; the primary activated carbon filter is connected with the sedimentation tank. According to the scheme, the degradation sedimentation basin carries out Fenton treatment for improving the biodegradability of electroplating wastewater, so that organic matters in the wastewater can be removed by a biological treatment technology, and further COD, total phosphorus, ammonia nitrogen, total nitrogen and the like reach emission indexes; meanwhile, by combining with an ion exchange method, metal ions,in particular to heavy metal ions in the wastewater are effectively removed, so that the contents of the heavy metals reach the emission indexes.

Description

Technical field [0001] The invention relates to the field of sewage treatment, in particular to a high-efficiency treatment system for electroplating wastewater and a treatment method thereof. Background technique [0002] Electroplating refers to the use of electrolysis principles to coat other metals or alloys on the surface of some metals to prevent metal oxidation and improve wear resistance. Electroplating wastewater is sewage with complex water quality and difficult to control composition in the electroplating production process. Containing cyanide, acid, alkali, and a large number of metal ions such as chromium, pickaxe, nickel, copper, etc., and the existence of metal ions in various forms, some in the form of simple cations, and some are in the form of acid radicals. Some are in the form of complex complex ions. At the same time, the wastewater basically contains organic additives. If the electroplating wastewater is directly discharged, it is extremely harmful to the en...

AI Technical Summary

Problems solved by technology

After these methods are processed, the heavy metals are often qualified, but the COD chemical oxygen demand, ammonia nitrogen, total nitrogen and total phosphorus and other organic substances will exceed the standard. Even if the biological method is added later, the conventional biological method still cannot achieve the desired effect. Ultimately lead to emission failure

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