Device and method used for removing hypophosphites and phosphites in chemical nickel plating waste water

Abstract

The invention belongs to the field of waste water processing, and more specifically relates to a device and a method used for removing hypophosphites and phosphites in chemical nickel plating waste water. The device comprises an adjusting pool, a catalytic hydrolysis reaction pool, an oxidation pool, and a flocculation sedimentation basin which are connected successively through pipelines, and also comprises an oxidizing agent storage pool and a flocculating agent storage pool; the oxidizing agent storage pool is connected with the oxidation pool; the flocculating agent storage pool is connected with the flocculation sedimentation basin; a first elevator pump is arranged at a water inlet of the adjusting pool; a second elevator pump is arranged on the pipeline used for connecting the adjusting pool with the catalytic hydrolysis reaction pool; a first metering pump is arranged on the pipeline used for connecting the oxidizing agent storage pool with the oxidation pool; and a second metering pump is arranged on the pipeline used for connecting the flocculating agent storage pool with the flocculation sedimentation basin. The device is used for processing chemical nickel plating wastewater, sludge production amount is small, operation cost is low, and hypophosphites and phosphites in chemical nickel plating waste water can be removed completely with high efficiency.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a device and a method for removing hypophosphorous in electroless nickel plating wastewater. Background technique [0002] Electroless nickel plating is widely used in various fields due to its advantages of uniform coating, no need for external power supply, high hardness, good wear resistance, and plating is not limited by the size and shape of parts. electroless nickel plating wastewater. [0003] Electroless nickel plating wastewater contains a relatively high concentration of hypophosphite. Phosphorus is a nutrient element in water bodies, which can cause eutrophication in water bodies, make aquatic plants and blue-green algae multiply, consume dissolved oxygen in water, and force fish and other organisms to Die from lack of oxygen. Therefore, simple and effective removal of phosphorus nutrients in eutrophic water has become a key issue in water po...

AI Technical Summary

Problems solved by technology

[0006] To sum up, electroless nickel plating wastewater contains a relatively high concentration of hypophosphite, while conventional treatment methods have defects such as low removal efficiency, incomplete treatment, and high treatment costs.

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