A method for recovering copper and iron ions from solid waste containing copper and iron
A recycling method and technology of copper and iron, applied in the field of solid waste recycling, can solve the problems of increasing the environmental capacity load, increasing the cost of solid waste treatment, waste of resources, etc., to achieve strong industrial application potential, and to achieve harmlessness and high value. The effect of processing and saving processing costs
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Embodiment 1
[0037] An experiment was carried out on the sludge solid waste after wastewater treatment of a pigment enterprise in Hebei Province. The sludge solid waste containing copper and iron in this factory is generally treated according to the hazardous waste treatment standard, and the mass of copper accounts for 15% of the solid waste mass, and the iron The mass of solid waste accounts for 3.02% of the mass of solid waste.
[0038] Step 1: First soak 100g of the dried copper and iron-containing sludge solid waste in 5000mL of 5% H 2 SO 4 The solution was placed at room temperature (25° C.) and stirred at a speed of 500 rpm for 2 hours to obtain acid dipping solution and residue. The obtained residue (white insoluble substance) was separated from the acid dipping solution and discarded.
[0039] Step 2: Dispense 1mL H 2 o 2 Add it to 200 mL of the acid dipping solution obtained in step 1 above, and stir at 500 rpm for 20 min at room temperature (25° C.) to obtain an oxidation sol...
Embodiment 2
[0046] An experiment was carried out on the sludge solid waste after wastewater treatment of a pigment enterprise in Hebei Province. The sludge solid waste containing copper and iron in this factory is generally treated according to the hazardous waste treatment standard, and the mass of copper accounts for 15.0% of the solid waste mass, and the iron The mass of solid waste accounts for 3.02% of the mass of solid waste.
[0047] Step 1: First soak 100g of the dried copper and iron-containing sludge solid waste of the plant in 5000mL of 5% sulfuric acid solution, place it at room temperature (25°C) and stir at a speed of 800rmp for 6h to obtain acid Dipping liquid and residue, the obtained residue is separated from the acid leaching liquid and discarded.
[0048] Step 2: Add 1.5 g of potassium permanganate to 200 mL of the pickling solution obtained in the above step 1, and stir at 800 rpm for 60 min at room temperature (25° C.) to obtain an oxidation solution.
[0049] Step 3...
Embodiment 3
[0052] An experiment was carried out on the sludge solid waste after wastewater treatment of a pigment enterprise in Hebei Province. The sludge solid waste containing copper and iron in this factory is generally treated according to the hazardous waste treatment standard, and the mass of copper accounts for 15% of the solid waste mass, and the iron The mass of solid waste accounts for 3.02% of the mass of solid waste.
[0053] Step 1: First soak 100g of the dried copper and iron-containing sludge solid waste in 5000mL of 5% H 2 SO 4 solution, slowly add 10mL H 2 o 2 , stirred at a speed of 500 rpm at room temperature (25° C.) for 2 h to obtain the target treatment solution and residue, and the obtained residue (white insoluble substance) was separated from the target treatment solution and discarded.
[0054] Step 2: Add 1.5g of potassium permanganate to 200mL of the target treatment solution obtained in the above step 1 to ensure that all ferrous iron is converted into fer...
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Abstract
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