Treatment method for removing manganese from metallurgical industrial wastewater

Abstract

The invention discloses a treatment method for removing manganese from metallurgical industrial wastewater. The wastewater passes through a water collection well, a coarse screen, a primary sedimentation tank, a pH value regulation tank, a modified fly ash vibratory adsorption type manganese removal device, an aeration tank, a biological oxidation filter tank, a secondary sedimentation tank and a water purification tank sequentially. By innovatively making use of ion chemical bonding characteristic of artificial modified fly ash, the fly ash processed specially and manganese metal ions can be in ion chemical bonding action in a normal-temperature water solution to enable the manganese ions to be adsorbed on surfaces of modified fly ash particles, and accordingly adsorptive purification of the manganese metal ions in the wastewater is realized. In addition, by means of advanced microwave technologies, the fly ash is modified by microwave radiation in specific frequency, volume expansion of the fly ash particles can be effectively promoted, and consequently adsorption efficiency of the fly ash is greatly improved. Furthermore, by the treatment method for removing manganese from metallurgical industrial wastewater, secondary utilization of the fly ash which is waste of coal-fired boilers and thermal power plants is realized, and high environmental benefits are achieved.

Description

technical field [0001] The invention relates to a treatment method for removing manganese in metallurgical industrial wastewater, which belongs to the field of wastewater treatment in environmental protection. Background technique [0002] Manganese is one of the elements widely distributed in the earth's crust. Its content in the earth's crust is 0.085%, accounting for about three ten thousandths of the total number of atoms in the earth's crust. Although there is very little manganese in seawater, the silt in the depths of the ocean contains three thousandths of manganese. Manganese dioxide is the most important among the oxides of various valence states of manganese. In nature, there is a large amount of natural manganese dioxide - pyrolusite, which is the main raw material for smelting ferromanganese alloys. When making glass, add a small amount of manganese dioxide as a decolorizer. Manganese dioxide can also be used as a combustion aid in the match industry, an oxidiz...

AI Technical Summary

Problems solved by technology

This method has the advantages of high efficiency, rapidity and energy saving, but the processing cost is relatively high

[0011] At present, the existing methods for treating metal manganese in metallurgical industrial wastewater have problems such as high technical requirements, large equipment investment, and secondary pollution.

Images