固定化菌种处理锈蚀管网出水的研究

发生内腐蚀的管道出水往往使出厂饮用水水质部分超标,遂进行了相关的深度净化技术研究。从除铁除锰滤池中的成熟滤砂洗脱下滤膜,以铁锰细菌的选择性培养基进行分离纯化,共培养出5株铁锰降解菌。通过试验发现,铁锰降解菌在铁、锰共存的培养基中的生长情况要好于只含铁基质的,而在只含有锰的基质中不生长。将降解有机物的工程菌和铁锰降解菌固定在同一个反应器的不同滤料上并处理管网出水(浊度为1.5NTU、色度≥25倍、有腥味),结果表明,一体式固定菌种反应器对铁、锰和高锰酸盐指数的去除率可达98%、96%和55%,处理出水的浊度<0.5NTU,色度<15倍,没有嗅味。

Immobilized Bacteria for Treatment of Outlet Water from Rusty Distribution Network

The outlet water from corrosive pipe resulted in some parameters of drinking water out of the standard,so the advanced treatment technology was studied.Five strains of iron and manganese removal bacteria were obtained from the biological film,which fell-off from mature filter bed and were incubated into culture media containing iron and manganese by repeatedly domestication.Experiment result shows that iron and manganese removal bacteria grows more rapidly in the culture media containing both iron and manganese than that in culture media containing only iron,and can not grow in the culture media containing only manganese.When the engineering bacteria removing organic matters and the bacteria removing iron and manganese were immobilized on difference filter bed in the same filter to treat the distribution water,the result shows that the removal rate of iron,manganese,and COD_(Mn) come up to 98%,96%,and 55% respectively in integrative immobilized biological filter.When the influent with turbidity of 1.5 NTU,color of 25 degree and offensive odor was treated,the treated water has turbidity <0.5 NTU,color <15 degree and without odor.