Iron and steel industrial wastewater iron remover and preparation method thereof
A technology for iron and steel industry and iron remover, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problem of no better utilization, avoid the problem of pollutant transfer, and achieve good iron removal effect. , Increase the effect of physical adsorption performance
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Embodiment 1
[0026] like figure 1 The process flow chart is as follows: (1) Bake the solid waste semi-coke after coal gasification at 200°C for 2-3 hours, dry and remove water, crush and sieve to obtain dry semi-coke with a particle size of 1-2mm; (2) Place 200g of the dried semi-coke particles in the high-temperature reaction cylinder, and then add 100mL of desulfurization waste liquid produced by the HPF desulfurization process of the coking plant. The SCN in the desulfurization waste liquid - The concentration is 1532mg / L, the temperature is raised to 700°C, and the reaction is closed for 30 minutes; (3) After the reaction is completed, cool to room temperature to obtain the iron and steel industrial wastewater iron remover.
[0027] Two kinds of coking plant biochemical effluents with different original iron ion concentrations (12.5mg / L and 18mg / L respectively) were added to the above-mentioned iron removal agent for iron removal treatment, specifically: adding the above-mentioned iron...
Embodiment 2
[0030] (1) The solid waste semi-coke after coal gasification is baked and dried at 400°C for 2 hours to remove water, crushed and sieved to obtain dry semi-coke with a particle size of 1-5mm;
[0031] (2) Place 200 g of the dried semi-coke particles in the high-temperature reaction cylinder, and then add 60 mL of desulfurization waste liquid produced by the HPF desulfurization process of the coking plant. The SCN in the desulfurization waste liquid - The concentration is 2132mg / L, the temperature is raised to 600°C, and the reaction is sealed for 60min;
[0032] (3) After the reaction is completed, cool to room temperature to obtain iron and steel industry wastewater iron remover.
[0033] Add the iron remover to the adsorption column, then add ironmaking turbid ring water with an iron ion concentration of 12.3mg / L into the adsorption column, let it flow through the adsorption column, and keep it for 30min, and then remove the iron The waste water flows out from the adsorptio...
Embodiment 3
[0035] (1) The solid waste semi-coke after coal gasification is baked and dried at 300°C to remove water, crushed and sieved to obtain dry semi-coke with a particle size of 1-5mm;
[0036] (2) Put 200g of the dried semi-coke particles in the high-temperature reaction cylinder, then add the desulfurization waste liquid produced by the HPF desulfurization process of the coking plant, raise the temperature to 800°C, and conduct a closed reaction for 30 minutes;
[0037] (3) After the reaction is completed, cool to room temperature to obtain iron and steel industry wastewater iron remover.
[0038]Add the iron remover to the adsorption column, then add the cold-rolled net circulating water sewage with an iron ion concentration of 3.8 mg / L to the adsorption column, let it flow through the adsorption column, and keep it for 50 minutes, and then remove the iron The final waste water flows out from the adsorption column. The iron remover after absorbing iron ions can be used as sinte...
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