Nickel-containing combined electroplating wastewater treatment device and method

Abstract

The present invention discloses a nickel-containing combined electroplating wastewater treatment device and method. The device comprises a combination pool, a regulating pool, a first sedimentation tank, a second sedimentation tank, a cyanide breaking tank, and an ion-exchange column; an air flotation machine is arranged between the combination pool and the regulating pool; the regulating pool is connected with the first sedimentation tank, and a first reaction tank is arranged between the regulation pool and the first sedimentation tank; the first sedimentation tank is connected with the second sedimentation tank, and a second reaction tank is arranged between the first sedimentation tank and the second sedimentation tank; the second sedimentation tank is connected with the cyanide breaking tank; and the cyanide breaking tank is connected with the ion-exchange column. The method mainly comprises: using hypophosphorous acid removal agent to reduce the total amount of phosphorus; adopting a similar oxygen method to remove the heavy metal ions in the comprehensive waste water; and finally using an ion exchange method to remove the chemical nickel in the comprehensive waste water through adsorption so that the comprehensive waste water can meet the discharge standard. The nickel-containing combined electroplating wastewater treatment device and method has advantages of being simple in technique, high in efficiency of treating nickel-containing combined electroplating wastewater, low in treatment cost, stable in effluent, and strong in applicability.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device and method for treating electroplating comprehensive wastewater containing chemical nickel. Background technique [0002] With the wide application of electroplating technology and its contribution to industry, electroplating wastewater has also brought serious environmental pollution problems, and electroplating wastewater is very complex. In addition to cyanide wastewater and acid-base wastewater, heavy metal wastewater is a potential hazard in the electroplating industry. Large wastewater category. Therefore, the problem of electroplating wastewater treatment has attracted the attention of the majority of people. There are a variety of treatment technologies available to eliminate or reduce the discharge of heavy metals through measures such as treating toxic to non-toxic, converting harmful to harmless, recycling heavy metals, and recycling them. To make th...

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Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art that it is difficult to remove electroplating comprehensive wastewater containing chemical nickel and the treatment cost is too high, the present invention provides a device and method for treating electroplating comprehensive wastewater containing chemical nickel. The combined treatment of electroplating comprehensive wastewater containing chemical nickel and ion exchange can not only make the heavy metal ions of electroplating comprehensive wastewater meet the discharge standard, but also can effectively absorb chemical nickel ions

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