粉煤灰改性壳聚糖处理城市景观水的研究  

STUDY ON FLOCCULATION AND TREATMENT OF LANDSCAPE WATER BY THE ACTIVATED FLY ASH-MODIFIED CHITOSAN

作　　者：胡颖慧[1] 乔俊莲[1] 董磊[1] 施国键[2] 张普[2] 

机构地区：[1]同济大学环境科学与工程学院,污染控制与资源化研究国家重点实验室,上海200092 [2]同济大学化学系,上海200092

出　　处：《水处理技术》2010年第7期50-52,共3页Technology of Water Treatment

基　　金：国家科技支撑计划项目(2006BAJ04A09)

摘　　要：用粉煤灰酸活化后过滤得到的滤液对壳聚糖进行改性,制备一种新型絮凝剂。用该絮凝剂对上海市和平公园、松鹤公园、鲁迅公园、彰武路某河的景观水体进行处理研究,并采用高锰酸钾预氧化,加强絮凝效果。结果表明,改性后的壳聚糖除浊、除藻效果很好,较少用量(0.6mg·L-1)可获得90%去除率。高锰酸钾预氧化强化了絮凝效果,当高锰酸钾投加量为1mg·L-1时,改性壳聚糖的投加量大大减少(0.3mg·L-1),藻去除率同比提高了近30%,但过高的投加量浊度去除率反而下降。A new flocculant was prepared with chitosan,which was modified by the liquid of activated fly ash,to treat the landscape water in Peace Park,Songhe Park,Luxun Park and Zhangwu River.Enhance flocculation by potassium permanganate preoxidation.The results of experiment showed that modified chitosan removed the turbidity and alga efficiently with less dosage（contained 0.6 mg·L^-1chitosan）.When the dosage of potassium permanganate increased to 1 mg·L^-1nd the activated fly ash-modifided chitosan was 0.3 mg·L^-1the removal of alga increased about 30%,while the removal of turbidity decreased when the dosage was too high.

关 键 词：粉煤灰 壳聚糖 絮凝 景观水体 

分 类 号：TQ314.253[化学工程—高聚物工业]