壳聚糖改性聚氨酯载体处理高氨氮废水的研究  

Study on Chitosan Modified Polyurethane Foams Carrier for Treatment of Wastewater Containing Strong Ammonium

作　　者：耿佳[1] 冯芳[1] 孔丹[1] 王东田[1] 

机构地区：[1]苏州科技学院化学与生物工程学院、江苏省环境功能材料重点实验室,苏州215009

出　　处：《材料导报》2013年第2期116-120,共5页Materials Reports

基　　金：江苏高校优势学科建设工程资助项目;苏州市环保科技项目;苏州科技学院科研基金(XKY201024);苏州科技学院研究生科研创新计划(SKCX10S_033)

摘　　要：利用壳聚糖对聚氨酯泡沫体进行化学改性处理,改性载体固定化微生物用于高氨氮废水处理。考察改性后聚氨酯泡沫的密度、孔径、孔隙率、持水倍率等物性参数变化,并研究微生物的生长曲线和挂膜率。结果表明:当壳聚糖溶液质量分数为2%、壳聚糖与戊二醛物质的量比为10∶1时,对聚氨酯泡沫进行改性后载体亲水性能良好,并具有较高的微生物负载量。进行曝气生物滤池的实验,研究优选改性聚氨酯泡沫体用于模拟高氨氮废水的处理效果,结果表明该改性生物膜载体对主要污染指标呈现出良好的去除效果。Chemical treatment was carried out to modify polyurethane foams by chitosan. The modified carrier was used to immobilize microorganism and thus to treat wastewater containg strong NH4 ^＋-N. After treatment, the density of polyurethane foam, the pore diameter, the pore ratio and the water containing rate and other parameters were studied, conical flask experiment is also designed to examine the growth curve of the microorganisms and the film- hanging rate. The results show that the modified polyurethane foam carrier treated by chitosan with unit molar ratio of 10 ： 1 and 2% concentration for chitosan solution has better hydrophilic performance and a higher microbial load. The optimal treated polyurethane foams carrier are used in simulated biological aerated filter experiment for simulated wastewater treatment. The immobilized microorganisms biofilm carriers present a good pollutant removal efficiency.

关 键 词：聚氨酯泡沫塑料 壳聚糖 化学改性 废水处理 生物膜载体 

分 类 号：X703.1[环境科学与工程—环境工程]