A method for regenerating and treating organic wastewater using an enzyme-like magnetic catalyst

Abstract

The invention relates to a regenerating method of organic waste water by adoption of an enzyme-mimic magnetic catalyst. According to the technical scheme, the method includes adding an inorganic acid into the organic waste water fed into a vortex mixer (1), adjusting pH to 3.5-6, feeding the acidified organic waste water after pH adjustment into a catalytic degradation reactor (2), adding the enzyme-mimic magnetic catalyst into the catalytic degradation reactor (2) containing the acidified organic waste water, adding H2O2 with the mass ratio of the enzyme-mimic magnetic catalyst to the H2O2 being 1:1-4.5, stirring at 20-30 DEG C with air blowing by an air blower (3) for 60-120 min to obtain suspension, allowing the suspension to flow automatically into a catalyst separation column (4), allowing the suspension to stand for 10-30 min under the action of a magnetic field, returning the enzyme-mimic magnetic catalyst in the lower layer to the catalytic degradation reactor (2) through a return pipe (5) to be reutilized, and using the supernatant liquid as industrial reclaimed water. The method has characteristics of simple process, high operationality, low investment, low operation cost, low running cost, and wide COD ranges of treated water.

Description

technical field [0001] The invention belongs to the technical field of organic wastewater treatment. In particular, it relates to a method for regenerating and treating organic wastewater by adopting an enzyme-like magnetic catalyst. Background technique [0002] The composition of industrial organic wastewater is complex, especially the organic components in coking wastewater are more complex, containing a large amount of aromatic hydrocarbons, polycyclic aromatic hydrocarbons and heterocyclic aromatic hydrocarbons, etc., its COD value is generally above 2000mg / L, and the color is darker, which is relatively Refractory industrial organic wastewater. The effluent treated by the traditional biochemical process still contains a relatively high concentration of refractory biodegradable organic matter. It is difficult for COD and chroma to meet the standards of industrial recycled water. Direct discharge will cause serious pollution and poisoning of the environment and ecology....

AI Technical Summary

Problems solved by technology

[0004] Enzyme-like catalytic degradation of organic matter in wastewater is a new technology, such as the "preparation method of an enzyme-like water treatment agent" (CN102350300A) patented technology, which is characterized by the preparation of an enzyme-like water treatment agent with cheap raw materials , but there are deficiencies such as complex preparation process, poor operability, narrow COD range of treated wastewater, and need to increase pretreatment process

Although the study of enzyme-like catalysts has attracted widespread attention, there are few reports on the application of the regeneration treatment of industrial organic wastewater

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