Method of dechlorinating organic chloride with metal enhanced by cationic surface active agent
A technology of surfactants and organic chlorides, which is applied in the field of organic chlorides in metal reduction wastewater enhanced by cationic surfactants, can solve the problem of complex preparation of binary metal or multimetal reducing agents and catalysts, low efficiency of organic chloride treatment, Engineering application conditions are harsh and other problems, to achieve the effect of simple and easy loading method, low cost of wastewater treatment, and simple wastewater treatment device
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[0046] Example 1:
[0047] The reducing agent is iron (powder) immersed in a 0.9mmol / L cetyltrimethylammonium bromide solution for 1 hour and then taken out to obtain the iron powder supported by cationic surfactant. Under room temperature and atmospheric pressure, the water to be treated The concentration of carbon chloride is 20mg / L, the pH is 7, the residence time is 60min, and the concentration of carbon tetrachloride in the treated effluent is 4mg / L.
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[0048] Example 2:
[0049]The reducing agent is iron (powder) immersed in a 3.0mmol / L tetradecyltrimethylammonium bromide solution for 1 hour and then taken out to obtain cationic surfactant-supported iron powder. Under room temperature and atmospheric pressure, the water to be treated is chloroform The concentration is 50mg / L, the pH is 4, the residence time is 48min, and the chloroform in the effluent is 8mg / L.
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[0050] Example 3:
[0051] The reducing agent is iron (powder) soaked in a 0.6mmol / L cetylpyridinium bromide solution for 1 hour and then taken out to obtain cationic surfactant-supported iron powder. Under room temperature and atmospheric pressure, hexachloroethane in the water to be treated The concentration is 20mg / L, the pH is 3.5, the residence time is 190min, and the hexachloroethane is 2mg / L in the treated water.
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