直接氧化法合成聚合硫酸铁的工艺研究

Synthesis of Polymerized Ferric Sulfate by Direct Oxidation

聚合硫酸铁是一种新型无机高分子絮凝剂,广泛用于各种工业污水的混凝净化处理。考察了氧化剂用量,氧化温度,浓硫酸用量,氧化剂加入速度,反应时间和产品稳定性等因素对聚合硫酸铁合成的影响。结果表明,合适的工艺条件为常温下,FeSO4,H2SO4和H2O2摩尔比为1∶0.26∶0.6,聚合反应时间为2.5 h,产品质量稳定,总铁含量和盐基度均符合行业标准和国家标准。

Poly-ferric sulfate（PFS） is a kind of efficient inorganic polymer flocculants,it is widely used in waste water treatment.In this paper,effects of oxidizer dosage,reaction temperature,sulfuric acid dosage,reaction time and product stability on preparation of poly-ferric sulfate were investigated.The results show that the appropriate conditions are as follows： temperature is 25 ℃,molar ratio of FeSO4,H2SO4 and H2O2 is 1：0.26：0.6,polymerization time is 2.5 h,product is stability in 144 h,the total icon and basicity of PFS prepared under above conditions accord with the industrial standard and national standard.