Purification treatment method for nickel plating wastewater

Abstract

The present invention relates to a purification treatment method for nickel plating wastewater. According to the method, a microbiological method is adopted, nickel plating wastewater is simulated and prepared, microbial bacteria stenotrophomonas maltophilia is cultured, treatments of enrichment and purification are performed, then the bacteria is mixed with the nickel plating wastewater, an oscillation purification treatment is performed on heavy metals in the nickel plating wastewater, wherein the treatment purification efficiency is 98.5%, the reclaimed water standard in the national standard is reached, and the purified water can be used for washing and irrigation farmlands. The purification treatment method of the present invention has the following advantages that: the process is advanced and quick; the process is short; the data is abundant and accurate; the environmental pollution is not generated; the treatment purification efficiency on the nickel plating wastewater is high;the method is suitable for the industrial treatment, and is an ideal nickel plating wastewater purification treatment method; other wastewater containing heavy metals can further be treated and purified by the method of the present invention.

Description

technical field [0001] The invention relates to a method for purifying nickel-plating wastewater, which belongs to the technical field of purification and application of wastewater containing heavy metals. Background technique [0002] With the development of industrial technology, the processing of metal materials and the application of surface treatment are becoming more and more frequent, especially in the manufacture of high-precision products, the requirements for metal products are getting higher and higher. Corrosion, often plating on the metal surface, also known as electroplating, uses electric field effect to plate a layer of corrosion-resistant and hard metal on the metal surface, such as nickel, chromium, zinc, copper, tin, vanadium, etc.; the medium of electroplating is Water, metal dissolves in water under the action of an electric field. Under the condition of temperature field, the metal is uniformly fixed on the metal surface, making the metal surface more s...

AI Technical Summary

Problems solved by technology

[0003] Metal products will use and consume a large amount of clean water in the electroplating process. It is necessary to use water as the electric field medium for plating and to wash it multiple times. A large amount of clean water will be consumed in the process of electroplating and cleaning, and there will be Contains a large amount of heavy metals, such as nickel, zinc, copper, tin, vanadium, mercury, arsenic, beryllium, cadmium, lead, chromium, etc. The discharge of these heavy metal-containing water will cause serious environmental pollution, and the discharge of these polluted water will cause Deterioration of soil and water sources can cause serious damage to humans and the environment

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