【摘要】 对生物接触氧化法处理废纸造纸废水中生物膜进行实验研究。结果表明,生物膜的活性厚度在70~100μm,在前期挂膜阶段,生物膜上的生物相以丝状菌为主,鞭毛类和纤毛类原生动物较少,活性较差。在正常运行的情况下,生物相中占优势的原生动物以固着型的纤毛虫为主,生物膜上生物相相对稳定,化学需氧量(COD)的去除率也稳定在88%左右。更多还原

【Abstract】 Research on bio-membrane in treating wastewater from regenerated papermaking by bio-contact oxidation was carried out,and the result indicated that active thickness of the bio-membrane was between 70 and 100 μm.During the course of membrane formation,filamentous bacteria are the main biota,with less flagellated protozoan and ciliates,so that the activity of the membrane is relatively poor.In case of normal running,fixed ciliates are the dominant protozoan,the biota of the bio-membrane is relatively stable,and the removal rate of COD is kept steadily around 88 %.更多还原