Preparation method of high-efficiency flocculating agent for purifying mine acidic wastewater
A technology for mine acid wastewater and flocculant, which is applied in mining wastewater treatment, chemical instruments and methods, flocculation/sedimentation water/sewage treatment, etc. Effect
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Embodiment 1
[0028] A preparation method for high-efficiency flocculants for purification of acidic wastewater in mines, comprising the following steps:
[0029] S1. Cleaning of iron filings: In a reactor equipped with a stirring device, weigh 100 parts of iron filings, 200 parts of water, and 10 parts of nonylphenol polyoxyethylene ether (TX-10) in parts by mass, stir and wash 0.5h, filter, and then wash the iron filings twice with water to obtain the cleaned iron filings.
[0030] S2, preparation of ferrous sulfate solution: in parts by mass, in a reactor equipped with a stirring and heating device, add 10 parts of iron filings after S1 cleaning, 90 parts by mass percentage concentration of 20% Sulfuric acid solution, stirring, keeping the reaction temperature at 60°C, the reaction time for 1.5h, cooling down to room temperature, filtering, and taking the filtrate is the ferrous sulfate solution;
[0031] S3, preparation of polyferric sulfate: in parts by mass, in a reactor equipped wit...
Embodiment 2
[0034] A preparation method for high-efficiency flocculants for purification of acidic wastewater in mines, comprising the following steps:
[0035] S1. Cleaning of iron filings: In a reactor equipped with a stirring device, weigh 100 parts of iron filings, 200 parts of water, 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate (AES), and stir and wash 0.5 parts by mass. h, filter, and then rinse the iron filings twice with water to obtain the cleaned iron filings.
[0036] S2, preparation of ferrous sulfate solution: in parts by mass, in a reactor equipped with a stirring and heating device, add 15 parts of iron filings after S1 cleaning and 130 parts of sulfuric acid with a mass percentage concentration of 25% solution, stirring, keeping the reaction temperature at 70°C, and the reaction time for 2 hours, cooling to room temperature, filtering, and taking the filtrate as ferrous sulfate solution;
[0037] S3. Preparation of polyferric sulfate: in parts by mass, i...
Embodiment 3
[0040] A preparation method for high-efficiency flocculants for purification of acidic wastewater in mines, comprising the following steps:
[0041] S1. Cleaning of iron filings: In a reactor equipped with a stirring device, weigh 100 parts of iron filings, 200 parts of water, 4 parts of nonylphenol polyoxyethylene ether (TX-10) and 6 parts by mass Fatty alcohol polyoxyethylene ether sodium sulfate (AES) mixture, stirred and washed for 0.5h, filtered, and then the iron filings were washed twice with water to obtain the cleaned iron filings.
[0042] S2, preparation of ferrous sulfate solution: in parts by mass, in a reactor equipped with a stirring and heating device, add 13 parts of iron filings after S1 cleaning, and 110 parts of sulfuric acid with a concentration of 20% by mass solution, stirring, keeping the reaction temperature at 65°C, and the reaction time for 1.8h, cooling down to room temperature, filtering, and taking the filtrate as the ferrous sulfate solution;
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