一种新型竹纤维生物膜载体的制备与性能

以竹纤维为主要原料制备得到一种新型竹纤维生物膜载体.载体比表面积达5393m2·m-3,亲水性能良好,30min后基本浸湿完全.研究了竹纤维生物膜载体在低浓度生活污水处理中的挂膜性能,结果表明:载体挂膜速率快,7天后载体表面即出现大量黏性黄褐色生物膜,第12天基本完成挂膜,膜厚达3～5mm.生物相观察表明:以固着型纤毛虫为主的后生动物数量较稳定,生物膜趋于成熟.载体生物膜耐水力剪切冲击能力和恢复能力强,对CODCr和NH4+-N的去除率在80％以上.

Preparation and Characteristics of a Novel Bamboo Fibre Biofilm Carrier

A novel bamboo fibre biofilm carrier was prepared. The carrier with a specific surface area of 5 393 m 2 ·m - 3 had a good hydrophilicity and could be soaked completely in 30 min. Biofilm formation on bamboo fibre carrier was investigated in treating low concentration domestic sewage. The results showed that the biofilm formed rapidly,abundant viscous yellowish-brown biofilm was observed on the surface of the carrier after 7 days,and the biofilm formation was completed in 12 days with a biofilm thickness of 3 - 5 mm. Biophase observation demonstrated the number of metazoan with sessile ciliates predominant was stable,and biofilm became mature. The biofilm on the carrier was good in tolerating hydraulic shearing impact and recovery. Further more,the removal efficiency of chemical oxygen demand and ammonia nitrogen by the biofilm were both more than 80% .