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 treated by enabling the wastewater to successively flow through a water collection well, a coarse screen, a primary sedimentation pond, a pH regulating pond, a mucus protein-phosphate adsorption reactor, a centrifugal separator, a secondary pH regulating pond, an aeration oxidation pond, a secondary sedimentation pond and a water purification pond. Through the method, a rotary net box filled with chippings of rhizoma dioscoreae and dasheen is creatively used as a surface contact reaction 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 the mucus protein are subjected to an adsorption reaction due to the adsorption effect of the mucus protein rich in the rhizoma dioscoreae and dasheen so as to generate a phosphate complex; the complex is insoluble in water and can be removed by centrifugal separation operation; meanwhile, the rhizoma dioscoreae and the dasheen are common crops and are used as 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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