摘要：

利用陶瓷膜, 以相对分子质量为300 000、1 000 000、5 000 000的聚丙烯酸钠为络合剂处理模拟含油低放废水。研究了络合比、pH、体积浓缩因子等因素对超滤过程的影响。结果表明:在各种条件下, 陶瓷膜对油及Fe³⁺的截留率均接近100%;在适当条件下, 对Mn²⁺、Ni²⁺、Co²⁺的最大截留率分别接近100%、98.11%、100%。聚丙烯酸钠辅助陶瓷膜处理含油低放废水是可行的, 其可有效截留废水中的Fe³⁺、Mn²⁺、Ni²⁺、Co²⁺及油, 且可得到较高的渗透通量。

关键词: 陶瓷膜, 聚丙烯酸钠, 含油低放废水

Abstract:

Poly (acrylic acid) sodium with relative molecular mass 300 000, 1 000 000, or 5 000 000 has been used as complex agent for adequately treating the simulated oily and low-content radioactive wastewater. The effects of complex ratio, pH and volume enrichment factor, on ultra-filtration is studied. The results show that under various conditions, the interception rate of oil and Fe³⁺ by ceramic membranes could approximately reach as high as 100%, and under appropriate conditions, the highest interception rates of Mn²⁺, Ni²⁺, and Co²⁺ are around 100%, 98.11% and 100% respectively. It is feasible for polymer-assisted ceramic membrane to treat simulated oily and low-content radioactive wastewater. It can intercept Fe³⁺, Mn²⁺, Ni²⁺, Co²⁺and oil in wastewater, and gain higher permeate flux.

Key words: ceramic membrane, poly(acrylic acid) sodium, oily and low-content radioactive wastewater

中图分类号: 

• TL941+.19