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以模拟铁超标的水源水作为研究对象,在水厂常规工艺的基础上增加预臭氧工艺,考察了该组合工艺对含铁原水的处理效果。结果表明,常规工艺对铁的去除效果有限;臭氧—沉淀工艺可以有效去除原水中总铁,原水中总铁含量为7.5~8.0 mg/L时,臭氧投加量提高至5 mg/L即可保证出水铁含量达标,但对浊度去除效果差。结合经济性原则,当原水总铁含量为5~8 mg/L时,最佳工艺参数如下:O_3投加量为4 mg/L,PAC投加量为20 mg/L;当原水中总铁含量为8~10mg/L时,最佳工艺参数如下:O_3投加量为5 mg/L,PAC投加量为20 mg/L。
To simulate iron source water exceeding the standard of iron as the research object, the pre-ozone process was added to the conventional process of the water plant, and the treatment effect of the combined process on the iron-containing raw water was investigated. The results show that the conventional technology has a limited effect on the removal of iron. The ozone-precipitation process can effectively remove the total iron in the raw water. When the total iron content in the raw water is 7.5-8.0 mg / L, the ozone dosage can be increased to 5 mg / L Guarantee effluent iron content standards, but poor removal of turbidity. In combination with the economic principle, when the total iron content of raw water is 5 ~ 8 mg / L, the optimum technological parameters are as follows: the dosage of O 3 is 4 mg / L and the dosage of PAC is 20 mg / L; When the content is 8 ~ 10mg / L, the optimum technological parameters are as follows: the dosage of O_3 is 5 mg / L and the dosage of PAC is 20 mg / L.