Phosphating and chemical nickel-plating mixed comprehensive wastewater treatment process and automated device

Abstract

The invention provides a phosphating and chemical nickel-plating mixed comprehensive wastewater treatment process and an automated device. According to the process, high-concentration wastewater and low-concentration washing wastewater are respectively collected; the high-concentration wastewater and the low-concentration washing wastewater are mixed in a wastewater adjustment tank; the mixture sequentially enters a primary reaction tank, an inclined tube sedimentation tank, a secondary reaction tank, a floatation system, and a pH value correction tank; obtained clear water can reach a discharge standard and can be discharged; sludge produced during the wastewater treatment process enters a sludge collection tank, and is subjected to pressure filtration through a filter press; and an obtained solid matter is separately collected and disposed. The automated device comprises a PLC control system, a wastewater collection system, an adjustment tank, a primary reaction tank, an inclined tube sedimentation tank, a secondary reaction tank, a flotation system, dosing devices and an air stirring system. The phosphating and chemical nickel-plating mixed comprehensive wastewater is subjected to multiple levels of treatments. The entire process is automatically controlled by PLC. The entire wastewater treatment process is displayed dynamically. According to the invention, the process is simple, dosing amount is low, the quality standard of treated water is high, and processing efficiency is high.

Description

technical field [0001] The invention relates to a phosphating and electroless nickel-plating mixed comprehensive wastewater treatment process and automation equipment, belonging to the technical field of industrial wastewater treatment. Background technique [0002] With the development of industry, there are more and more various industrial wastewaters, which not only waste water resources, but also seriously pollute the environment. Therefore, these industrial wastewaters need to be treated to meet the discharge standards. Phosphating wastewater contains a large amount of heavy metal ions such as phosphate, zinc and manganese, suspended solids, petroleum pollutants, and high COD, while electroless nickel plating wastewater contains a large amount of heavy metal nickel ions, hypophosphite, and phosphorous acid Salt, etc. After the two kinds of wastewater are mixed together, the wastewater contains a large amount of heavy metals such as nickel, zinc, manganese, phosphate and...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the existing phosphating and electroless nickel plating wastewater treatment process that the purification is not comprehensive enough, the amount of chemical agents is large, and the treatment efficiency is relatively low, the present invention provides a phosphating and electroless nickel plating mixed comprehensive wastewater treatment process and automation equipment

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