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近年来净水剂有了新的发展,人们对净水剂提出了新的要求。传统的絮凝剂,如硫酸铝、明矾、三氯化铁、硫酸亚铁等系低分子无机盐,已适应不了发展的需要。以铝土矿为主要原料生产的四号净水剂([Fe_2Al_2(OH)_nCl_(12-n)]_m)是一种多羟基多核阳离子型的电解质,它比一般无机混凝剂有较大的分子量,在水解聚合中双核高价离子与多核低电荷离子的成份比值较适宜,能有效地压缩双电层,因而能显著地
In recent years, there has been a new development in water purification agents, and people have put forward new requirements for water purification agents. Traditional flocculants such as aluminum sulfate, alum, ferric chloride, ferrous sulfate and other low-molecular inorganic salts have not been adapted to the needs of development. The No.4 water purifying agent ([Fe_2Al_2(OH)_nCl_(12-n)]_m) produced from bauxite as a main raw material is a polyhydric, polynuclear cationic electrolyte, which is larger than general inorganic coagulants. The molecular weight, in the hydrolysis polymerization, the ratio of the components of the dinuclear high-valent ion to the polynuclear low-charged ion is more appropriate, and the double electric layer can be effectively compressed, and thus can remarkably