Vanadium oxide production industrial wastewater processing method

Abstract

The invention provides a vanadium oxide production industrial wastewater processing method, vanadium oxide production industrial wastewater contains manganese, vanadium, iron and phosphorus, and the manganese content is 10-15g / L, and the method comprises the following steps: (1) segmented impurity removal and vanadium, iron and phosphorus removal of the vanadium oxide production industrial wastewater to obtain impurity-removed wastewater; and (2) variable electric current electrolysis of the impurity-removed wastewater; wherein the by the impurity removal process, the vanadium content of the impurity-removed wastewater is lower than 0.01g / L, the phosphorus content is lower than 0.01g / L, and the wastewater iron content is less than 0.005g / L. According to the processing method, the processed vanadium oxide production industrial wastewater can be recycled, and has no adverse impact on the quality of products, metal manganese products meeting the national YB / T051-2003DJMnD standard can be recovered, and a certain economic value is produced.

Description

technical field [0001] The invention relates to a method for treating industrial waste water produced by vanadium oxide. Background technique [0002] At present, the mainstream production processes of vanadium oxide products are "calcification process" and "sodium process", and there are two corresponding treatment methods for industrial wastewater. The treatment method corresponding to "chemical process" is "evaporative concentration method". Both treatment methods can achieve wastewater recycling, but both have inevitable shortcomings. The "milk of lime neutralization method" has low cost, simple process, and easy equipment to implement, but it produces a large amount of "neutralization gypsum slag", which is not environmentally friendly. The "evaporative concentration method" has high treatment costs, difficult equipment maintenance, and difficult treatment of the generated underflow slag. And above-mentioned two kinds of waste water treatment methods all are unitary i...

AI Technical Summary

Problems solved by technology

[0002] At present, the mainstream production processes of vanadium oxide products are "calcification process" and "sodium process", and there are two corresponding treatment methods for industrial wastewater. The treatment method corresponding to "chemical process" is "evaporative concentration method". Both treatment methods can realize the recycling of wastewater, but both have inevitable shortcomings.

The "milk of lime neutralization method" has low cost, simple process and easy equipment to implement, but it produces a large amount of "neutralization gypsum slag", which is not environmentally friendly

The "evaporative concentration method" has high treatment costs, difficult equipment maintenance, and difficult treatment of the generated underflow slag

Moreover, the above two wastewater treatment methods are single input, without any economic value.