研究论文
胡勇有,王占生,汤鸿霄.聚磷氯化铝溶液形态分布及转化规律[J].环境科学学报,1995,15(2):224-231
聚磷氯化铝溶液形态分布及转化规律
- SPECIATIONAND TRANSFORMATION OF POLYMERIC PH0SPHAT0-ALUMINUM CHLORIDE SOLUTION
- 基金项目：
- 作者
- 单位
- 胡勇有
- 清华大学环境工程系,北京 100084
- 王占生
- 清华大学环境工程系,北京 100084
- 汤鸿霄
- 中国科学院生态环境研究中心,北京 100085
- 摘要：聚磷氯化铝是一种新型高效混凝剂,采用逐时络合比色法和酸中和速度法研究了聚磷氯化铝溶液的形态分布。结果表明,聚磷氯化铝的聚合形态为聚合铝形态与磷酸很作用新形态之和,其形态分布取决于羟铝比值和磷铝比值等因素,在一定的羟铝比值和磷铝比值时,聚磷氯化铝溶液可划分为5类形态,描绘出了聚磷氯化铝的形态转化规律。
- Abstract：Polyneric phosphato-aluminum chloride is a new kind of effective coagulatant,its spe-ciation were studied by two experimental methods:time complex-caIorimetric procedurewith Ferron-phenanthroline reagents and acid depolymerization, The results showed thatthe species are composed of polymeric aluminum species and new species formed by the reac-tion with phosphate。 The speciation depends upon the parameters of[B*=(10-PH+OH)/Al]and P/Al(molar ratio of phosphate to aluminum, as well as other factors,The speciescan be divided into five categories of monomeric(Ala),low polymers(Alb1,moderate poly-mers (Alb2,high polymers(Alb3and sol-precipitates(Ala)at certain B* and P/Al. Thespecies transformation model of polymeric phosphato-aluminum chloride was suggested.
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