Process method and device for using high-grade oxidization and electrolysis catalysis in combined way on organic matter in high-salt waste water

Abstract

The invention discloses a process method and device for using high-grade oxidization and electrolysis catalysis in a combined way on organic matters in high-salt waste water. The method comprises thefollowing steps that the industrial waste water is subjected to oil removal and filtering by a coarse filter; suspended matter and colloid substances in the waste water are cleared; the industrial waste water subjected to coarse filtering is fed into a high-grade oxidization device; hydrogen peroxide and ozone are introduced; the high-grade catalysis oxidization reaction is performed; then, the waste water subjected to the high-grade oxidization treatment is fed into an electrolysis catalysis oxidization device; under the effect of a catalyst filling material, the voltage being 5 to 24V is exerted; under the ultraviolet light irradiation, difficult-to-degrade organic matters in the waste water are degraded through electrolysis oxidization; the COD content of the waste water in a sampling outlet is detected; the water is discharged when the preset index is reached; the waste water subjected to the electrolysis catalysis oxidization is fed into a crystallizing evaporator for evaporationconcentration crystallization recovery to obtain industrial salt capable of being used as resources; waste water subjected to evaporation condensation is continuously fed into a biochemical device forbiochemical treatment; the discharge or recovery utilization is performed after the discharge standard is met.

Description

technical field [0001] The invention belongs to the technical field of environmental protection chemical industry, and in particular relates to treatment equipment and a treatment method for waste water containing refractory phenolic sodium salt. Background technique [0002] With the rapid development of my country's industry, sewage discharge is increasing, and a large number of chemicals that are difficult to biodegrade are discharged into the environment in the form of wastewater, causing serious pollution of water resources, which has become a pain point and focus of social development. Especially the anhydrous discharged from coking, petrochemical, printing and dyeing, pharmaceutical, organic synthesis and other industrial production processes contains a large amount of toxic organic matter and high concentration of salt, such as sodium sulfate, sodium chloride, sodium nitrate, copper sulfate, etc., making it impossible to pass directly The biochemical treatment method...

AI Technical Summary

Problems solved by technology

Especially the anhydrous discharged from coking, petrochemical, printing and dyeing, pharmaceutical, organic synthesis and other industrial production processes contains a large amount of toxic organic matter and high concentration of salt, such as sodium sulfate, sodium chloride, sodium nitrate, copper sulfate, etc., making it impossible to pass directly The biochemical treatment method needs to crystallize and separate the industrial salt in the wastewater, and then perform biochemical treatment, resulting in toxic industrial waste salt, which cannot be used as a resource for industrial salt; at the same time, because the organic matter in the wastewater contains formaldehyde, alcohols, and Phenolic substances that are difficult to degrade and have a high boiling point cannot be treated by conventional catalytic oxidation, and for salty wastewater, the salt obtained by distillation and crystallization is waste salt, which cannot be recycled

As a newly developed oxidation method, advanced oxidation can obtain free radicals with extremely strong oxidizing ability by screening suitable catalysts, and oxidize macromolecular organic wastes with high bond energy in water into easily degradable and low-toxic small molecules, but its catalyst and core process technology All are imported from abroad, the cost is high, which is not conducive to the development of domestic sewage treatment technology

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