Treatment method for removing organic phosphate in electroplating wastewater

Abstract

The invention discloses a treatment method for removing organic phosphate in electroplating wastewater. The wastewater is sequentially treated through a water collection well, a coarse screen, a primary sedimentation tank, a pH (Potential of Hydrogen) adjusting tank, a mucous protein-phosphate adsorption reactor, a centrifugal separator, a pH secondary adjusting tank, an aerated oxidation tank, asecondary sedimentation tank and a pure water tank to be treated. According to the treatment method, a rotary net box filled with Chinese yam and taro fragments is creatively used as a surface contactreaction medium; when the electroplating wastewater containing the organic phosphate is in contact with the surface contact reaction medium, the organic phosphate in the wastewater and mucous proteinare subjected to adsorption reaction through an adsorption effect of the mucous protein in Chinese yams and taros, so that a phosphate complex compound is generated; the complex compound is not dissolved into water and can be removed through centrifugal separation operation. Meanwhile, the Chinese yams and the taros and the like belong to common crops and are low-value consumables, so that the material cost of wastewater treatment can be greatly reduced.

Description

technical field [0001] The invention relates to a treatment method for removing organic phosphate in electroplating wastewater, which belongs to the field of wastewater treatment in environmental protection. Background technique [0002] In the electroplating industry and metal surface treatment industry, phosphate or polyphosphate is commonly used as a chemical reaction catalyst. Phosphorus is one of the elements necessary for biological growth. However, if the content of phosphate (especially organic phosphate) in water is too high (more than 0.2mg / L), it can cause excessive algae reproduction, and even reach a harmful level (called eutrophication), resulting in reduced transparency of lakes and rivers. , the water quality deteriorates; at the same time, the toxicity of organophosphates cannot be ignored, which will cause irreparable impacts on the ecological environment. [0003] At present, the common wastewater phosphorus removal technologies in my country include: (1...

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Problems solved by technology

[0004] The removal of phosphorus in wastewater is a worldwide problem. For example, the chemical method is effective but the cost is high, while the biological method has the weakness of unstable removal efficiency. Therefore, it is necessary to get rid of the existing treatment technology ideas and develop a A new way to treat organophosphate in electroplating wastewater, and then develop a new form of electroplating wastewater organophosphate treatment technology

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