新型挂膜纤维材料的研究

采用组合填料并选用合适的挂膜纤维,对城市生活污水及实验室自配原水进行处理。结果表明:处理后出水稳定,化学需氧量CODcr去除率高,平均CODcr去除率在75%￣80%;改善填料的亲水性能有利于提高出水水质,选用的聚丙烯腈纤维和聚乙烯醇纤维在同等处理条件下的处理效率分别高出参照纤维聚丙烯6.9%和2.9%;增大纤维的比表面积,CODcr的去除率提高,但比表面积的提高应以保证纤维的分散性为前提。

Study on New Fiber Materials for Biofilm

The combined bio-carrier and selected forming biofilm fiber were used to treat municipal sewage and sewage mixed in laboratory. The result showed that the effluent condition was very stable and had a high CODcr removal rate, the average removal rate was between 75 % and 80 % and the hydrophilicity of fiber could greatly improve the effluent condition. With the same condition, the disposal effect of acrylic fiber and polyvinyl alcohol fibre were 6.9 % and 2.9 % higher than that of polypropylene fibre, which was already used widely as a good forming biofilm fiber. The CODcr removal rate could also be enhanced by increasing the specific surface of the fiber. However, the increase of the specific surface should guarantee the dispersion of the fibre.