碳素纤维生态基技术对城市黑臭水体的修复效果

Effectiveness of carbon fiber based biofilm carrier remediation technology on urban black-odorous water

以碳素纤维(carbon fiber,CF)生态基为载体,处理南宁市朝阳溪黑臭河水,考察CF生态基在黑臭水体中的挂膜情况及其对污染物的去除效果。结果表明,CF生态基对污水中悬浮物有较强的吸附能力,在24 h内,CF实验组的浊度由原来的47.32 NTU降低为13.78 NTU;CF生态基生物亲和力强,易于挂膜,在黑臭水体中10 d内能形成较成熟的生物膜;在没有曝气情况下,CF生态基挂膜后对COD、TP、NH3-N和TN去除率分别达到76.00%、54.34%、90.73%和55.13%,是一种较有效的改善城市黑臭水体生态材料。

Carbon fiber(CF) was used as biofilm carrier to treat black-odorous water samples from Chaoyang Creek,Nanning.The biofilm culturing status and its remediation effectiveness on the removal of pollutants were investigated.The results showed that(1) there was a strong adsorption of the CF biofilm to the suspended substances in the polluted waters.The turbidity of the sample decreased from 47.32 to 13.78 NTU within 24 h;(2) CF had a good ecological compatibility and the mature biofilm was formed within 10 days in the black-odorous water;(3) without aeration,the removal rates of the COD,TP,NH3-N and TN in the sample were 76.0%,54.34%,90.73% and 55.13%,respectively.Therefore,CF is an effective ecological material to be used in the application for improving the quality of urban black-odorous water.