A kind of preparation method of heavy metal ion remover

A technology of heavy metal ions and removers, applied in the direction of non-metallic elements, chemical instruments and methods, silicon compounds, etc., can solve the problems of secondary pollution, high cost of chemical agents, etc., achieve low cost, increase economic added value, and easy operation Effect
CN107694512BActive Publication Date: 2019-12-13YANGTZE NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANGTZE NORMAL UNIVERSITY
Publication Date
2019-12-13

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Abstract

The invention provides a preparation method of a heavy metal ion remover. Discarded hardened cement concrete is used as a raw material. The preparation method comprises the steps: primary crushing andpresintering; smashing and separation; ball milling and activation; and powder separation. Heavy metal ions in wastewater containing copper, zinc, chromium, nickel and the like can be effectively removed, and an implementation process of a technical method has the advantages that the speed for removing the heavy metal ions is high, the reaction time is short, the removal effect is stable, and themethod can be operated at room temperature. The technical application of a building waste, namely hardened cement stone in discarded concrete, is widened to the field of heavy metal sewage treatment,no problem of limit mixing amount exists, the recycling efficiency of the discarded cement stone is increased, and the economic additional value of the discarded cement stone is increased.
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Description

technical field

[0001] The invention relates to the technical field of waste resource utilization and heavy metal wastewater treatment, in particular to a heavy metal wastewater remover based on waste hardened cement stone, a preparation method and an application. Background technique

[0002] A large amount of construction waste will be generated in the construction of buildings or structures, decoration, demolition and other construction activities, and with the rapid advancement of my country's infrastructure and the acceleration of urbanization, the amount of construction waste continues to increase. According to statistics, about 1 / 3 of urban waste is construction waste; by the end of 2011, its stock has exceeded 2 billion tons, and the annual increase of construction waste exceeds 300 million tons. Due to improper site selection or temporary stacking of construction waste landfill plants in most cities, it not only causes a lot of waste of land resources but also poses...

Claims

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