Cyclic treatment recycling technology for liquid waste generated in surface treatment of steel wires and equipment

Abstract

The invention discloses a cyclic treatment recycling technology for liquid waste generated in surface treatment of steel wires and equipment, and belongs to the field of metal surface treatment. The cyclic treatment recycling technology for the liquid waste generated in surface treatment of steel wires and the equipment are characterized in that the equipment comprises a settling pond, an acid adding pond, a finished product working solution pond, a liquid waste collecting tank and a film processor; deslagging separation filtering equipment is arranged on the lower portion of the settling pond; the deslagging separation filtering equipment can separate liquid from solid residues in the settling pond; clear liquid separated by the deslagging separation filtering equipment can be injected to the acid adding pond through a clear liquid pump; the clear liquid added with concentrated acid in the acid adding pond is concentrated by the film processor, and then a concentrated solution generated is injected to the finished product working solution pond, and the clear liquid separated out of the film processor is led into the liquid waste collecting tank; and the finished product working solution pond is connected with the settling pond through a backflow liquid guide pipe and a backflow liquid guide pump. By means of the cyclic treatment recycling technology for the liquid waste generated in surface treatment of steel wires and the equipment, an old working solution can be effectively treated and be recycled; and in addition, the old working solution can be treated through the reasonable and efficient technology, production cost is reduced, and the purposes of environmental protection and saving are achieved.

Description

technical field [0001] The invention belongs to the field of metal surface treatment, and in particular relates to a recycling process and equipment for waste liquid generated from steel wire surface treatment. Background technique [0002] Steel workpieces, especially metal workpieces such as steel wire coils, generally require pre-surface treatment before operation. The traditional pre-surface treatment operations generally only include pickling pools, phosphating pools and saponification pools to complete the process of pickling, phosphating, and saponification; the pickling pool is the finished working fluid pool. Active ingredients will be greatly reduced. Since the main component of the working fluid in the pickling pool is industrial hydrochloric acid, the acid concentration will decrease after long-term use, and metal salts, metal stripping substances and other precipitated substances will increase in the working fluid, resulting in a decrease in the processing effi...

AI Technical Summary

Problems solved by technology

Since the main component of the working fluid in the pickling pool is industrial hydrochloric acid, the acid concentration will decrease after long-term use, and metal salts, metal stripping substances and other precipitated substances will increase in the working fluid, resulting in a decrease in the treatment efficiency of the working fluid

If you directly replace the new working fluid at this time, although the processing efficiency and quality will be improved, the old working fluid can only be discarded, which will cause serious waste

In addition, the above-mentioned old working fluid must undergo environmental protection treatment before it can be discharged, and the environmental protection treatment process is also costly

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