Application of water-insoluble total-chlorine-substituted metal phthalocyanine catalyst in semi-coke waste water

Abstract

The invention relates to the field of environment engineering, in particular to application of a water-insoluble total-chlorine-substituted metal phthalocyanine catalyst in semi-coke waste water. The application is characterized by comprising the following step of: introducing industrial oxygen into the semi-coke waste water, adding 0.1-0.4g / l of the water-insoluble phthalocyanine catalyst into the waste water for reacting for 90-180min under the conditions that the reaction temperature is 60-300 DEG C, the oxygen partial pressure is 0.5-2.5Mpa and the pH value is 7-8, wherein the treated waste water has the COD (chemical oxygen demand) removal rate being 50-90% and BOD5 / CODcr being 0.5-0.9. Compared with the prior art, the application provided by the invention has the advantages that after the high-concentration refractory organic pollutants in the semi-coke waste water are treated, the concentration of the organic pollutants is lowered, the biotoxicity is alleviated greatly, the biodegradability of formed short-chain carboxylic acid is better, the flow-up conventional biochemical treatment becomes possible, the quality of discharged water can be improved further in cooperation with other deep processing treatment technologies, and the sustainable development of enterprises is ensured.

Description

technical field [0001] The invention relates to the technical field of treating high-concentration and refractory industrial wastewater by catalytic wet oxidation in environmental engineering, in particular to the application of a water-insoluble perchlorine-substituted metal phthalocyanine catalyst in semi-coke wastewater. Background technique [0002] Semi-coke wastewater is a kind of industrial wastewater produced during the production of semi-coke (a kind of coke) from medium-low metamorphic lump coal in the process of medium-low temperature dry distillation. Its water quality components are extremely complex, and the COD components are heterocyclic aromatic hydrocarbons It is mainly composed of high-grade heterohydric phenols, and its COD is as high as 20,000-50,000mg / L, so it is very difficult to deal with. This kind of high-concentration, refractory industrial wastewater cannot be directly treated by biochemical methods, and the cost of direct treatment by physical an...

AI Technical Summary

Problems solved by technology

This kind of high-concentration, refractory industrial wastewater cannot be directly treated by biochemical methods, and the cost of direct treatment by physical and chemical methods is extremely high. The current representative technology is to treat semi-coke with sewage incineration technology using gas as a heat source. Wastewater, but this technology consumes a lot of energy (coal gas), and the treated effluent is discharged in gaseous form, and neither heat nor water can be reused

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