复合絮凝剂APAC中铝形态分布及絮凝性能研究  

Study on flocculation and distribution aluminum form of composite flocculant APAC

作　　者：夏德强[1] 索陇宁[1] 唐莹莹 郭泉[3] 王彬 甘黎明[1] 高兰玲[1] 

机构地区：[1]兰州石化职业技术学院石化系,兰州730060 [2]中国石油长城钻探工程有限公司地质研究院,盘锦124010 [3]蚌埠玻璃工业设计研究院,蚌埠233018 [4]亳州市环境保护局,亳州236800

出　　处：《环境工程学报》2011年第9期2039-2042,共4页Chinese Journal of Environmental Engineering

基　　金：甘肃省经贸委;教育厅重点资助项目(GJ00-14-3)

摘　　要：用慢速滴碱法合成聚合氯化铝的过程中加入酸改性的凹凸棒,制备了新型絮凝剂APAC。采用Al-Ferron逐时络合比色法和烧杯絮凝实验法分别研究了APAC复合絮凝剂中铝的形态分布和絮凝性能。结果表明,Ala随盐基度的升高而逐渐降低;Alb随盐基度的升高而升高;Alc则先随盐基度的升高而升高,达到最大值后,再随盐基度的升高而降低。在相同实验条件下,盐基度愈高,混凝效果愈好,Alb含量愈高,混凝效果并不一定愈好。因此,APAC的质量控制以及追求目标应当是尽量提高Alc的含量,而不是Alb的含量。A novel environmental flocculant was prepared in the process of accession to polyaluminum chloride by a low-speed alkaline titrimetry with HCl modified attapulgite as the main raw material.The species distribution of aluminium of APAC are analyzed by Al-Ferron complexation timed spectrophotometric method,and the coagulation performance of APAC is also characterized by jar tests.The results show that Ala decreases gradually with the rising of the basicity,while Alb increases with the increase of the basicity,and Alc goes up with the rising of basicity at first,but after reaching the maximum value,it decreases with rising of the basicity.With the same dosage,the higher the basicity of APAC is,the better the coagulation effect is.But it is not a fixed rule that the higher Alb concentration is,the better the coagulation effect is.Therefore the aim of quality control of APAC production is not to seek for the maximization of the Alb concentration,but to increase the basicity or Alc of the products as high as possible.

关 键 词：铝形态分布 Al-Ferron 逐时络合比色法 复合絮凝剂 絮凝性能 聚合氯化铝 

分 类 号：X703.1[环境科学与工程—环境工程]