A kind of resource treatment method of manganese slag solid waste and its application

Abstract

The invention discloses a manganese slag solid waste resource treatment method and its application, belonging to the technical field of sewage treatment, comprising the following steps: adding deionized water to the manganese slag, and preparing the manganese slag into an ore slurry with a concentration of 10wt% to 30wt%; Stir in a water bath to control the slurry to form a vortex; after filtration, the filter residue is soaked in water for 8 to 12 hours; carry out suction filtration to detect the pH value and heavy metal ion content in the water body, if it still exceeds the standard, perform water bath purification again, and if the test is qualified, enter the next step. One step; drying to make the material fully free from bound water and do a constant weight test; dry crushing to ensure that the monomer dissociation degree of the material is ≥ 99%, and the particle size of the material is controlled at D 100 ≤100 mesh; the material is made into a sphere with a diameter of R=5mm~50mm. In the invention, the manganese slag is purified and pretreated, thereby enriching delta-type manganese-based alkaline substances, fully contacting and reacting with pollution factors, and catalyzing and oxidizing endocrine disruptors (EDCs) in water bodies.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a manganese slag solid waste resource treatment method and its application. Background technique [0002] Environmental endocrine disruptors (EDCs), also known as environmental hormones, refer to exogenous substances that persist in the environment and will intervene in the body to interfere with the synthesis, secretion, transportation, metabolism, and combination of the body's own normal hormones. substance. Many substances in the environment have endocrine disrupting effects, and there are many kinds of these substances with great differences. Including not only refractory persistent organic pollutants (POPs) (such as polychlorinated biphenyls, dioxins, organochlorine pesticides, etc.), but also easily degradable hormones excreted by animals and humans, birth control drugs (steroids), Plastic additives and detergent degradation products (phenols), natural plant horm...

AI Technical Summary

Problems solved by technology

The total manganese content in the residue is generally as high as 15%. A large amount of manganese slag has not been properly treated. Under the long-term weathering and leaching, free heavy metal ions will be formed. May cause chronic poisoning, producing central nervous system symptoms

If a large amount of manganese slag is finally disposed of in a landfill, it will occupy a large area and cost high, and there is a risk of excessive leachate and large inventory, which may cause debris flow disasters in case of heavy rain, and will also cause a lot of waste of manganese resources. Therefore, seeking A way to recover and comprehensively utilize manganese slag resources, which is very important for water resources treatment

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