Method for treating acidic high-iron and high-manganese mine water and method for modifying fly ash

Abstract

The invention discloses a method for treating acidic high-iron and high-manganese mine water and a method for modifying fly ash, and belongs to the field of waste water treatment. The method comprises: modifying fly ash, namely modifying unmodified fly ash by using a modifier to obtain modified fly ash; and treating acidic high-iron and high-manganese mine water, namely treating the acidic high-iron and high-manganese mine water by using the obtained modified fly as a treatment agent to obtain supernate. The method can solve the problems of low treatment efficiency, complex operation, high treatment cost, serious secondary pollution and the like of the conventional treatment process of acidic high-iron and high-manganese mine water in mining areas. Through the treatment of the acidic high-iron and high-manganese mine water by the modified fly ash, the effects of treating waste materials by waste materials and comprehensively utilizing resources are achieved, the power plant fly ash treatment and disposal and environment pollution problems are solved, the problem of environment pollution of acidic waste water in the mining areas is solved, the utilization rate of water resource is increased, and the sustained development of the mining areas is promoted.

Description

technical field [0001] The invention relates to the field of mine water treatment, in particular to a treatment method for acidic high-iron and high-manganese mine water and a modification method for fly ash. Background technique [0002] Coal is the main energy source in my country, and the healthy and sustainable development of the coal industry is an important guarantee for my country's energy security. According to the national annual output of 200,000 tons in 2009 and the water inflow of 600,000 m in recent years 3 According to the statistics of coal mines with more than one year (inclusive), the national coal mines have an annual mine water influx of 6.51 billion m 3 about. Acid mine water is a large category of mine water produced during coal mining, accounting for about 10% of the total mine water. At present, mine water is mainly used for coal washing and underground dust prevention after simple precipitation. The utilization rate is less than 26%. Most mine wate...

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a treatment method of acidic high-iron and high-manganese mine water and a modification method of fly ash, which can solve the problems of low treatment efficiency, low Complex operation, high processing cost, serious secondary pollution and other problems

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