摘要
目的:探讨炭基生物增效材料提高印染废水中化学需氧量、氨氮、总氮去除率的深度机理。方法:(1)通过正交实验,确定构建炭基生物增效材料的最佳配比;(2)通过中试实验,并与同期某印染污水处理厂使用生物活性炭法对水质的处理效果做对比。结果:炭基生物增效材料对废水中化学需氧量的去除率达到了80%、氨氮的去除率达到了96%、总氮的去除率达到了50%以上,优于生物活性炭法对印染废水的处理效果。结论:炭基生物增效材料加入活性污泥系统之后,在材料表面负载了一定厚度的生物膜,产生了氧梯度,形成了吸附-生物降解-再吸附的生物增效循环系统,极大的改善了微生物的生存和繁殖环境。因此,炭基生物增效材料的投加对印染废水中主要污染物的去除率有明显的提升效果,具有良好的实际应用前景。
Aims:This paper aims to investigate the depth mechanism of carbon-based bio-enhanced materials to improve the removal rate of chemical oxygen demand,ammonia nitrogen,and total nitrogen in printing and dyeing wastewater.Methods:(1)Through orthogonal experiments,the optimal ratio of building carbon-based bio-enhanced materials was determined.(2)Through a pilot experiment,a comparison was made with a printing and dyeing wastewater treatment plant using the biological activated carbon method for the treatment of water quality.Results:The removal rate of COD in wastewater by carbon-based bio-enhanced materials reached 80%.The removal rate of ammonia nitrogen reached 96%;and the removal rate of total nitrogen reached more than 50%.It was better than the biological activated carbon method in the treatment of printing and dyeing wastewater.Conclusions:After the carbon-based bio-enhanced material is added to the activated sludge system,a certain thickness of biofilm is loaded on the surface of the material and an oxygen gradient is generated,which has formed an adsorption-biodegradation-resorption biosynthesis cycle system.It has improved the survival and reproduction environment of microorganisms.Therefore,the addition of carbon-based bio-enhanced materials can obviously improve the removal rate of major pollutants in printing and dyeing wastewater,which has a great practical application in the future.
作者
崔洪基
洪波
CUI Hongji;HONG Bo(College of Materials and Chemistry,China Jiliang University,Hangzhou 310018,China)
出处
《中国计量大学学报》
2020年第2期247-256,共10页
Journal of China University of Metrology
作者简介
通信作者:洪波(1980-),男,副教授,博士,研究方向为磁性材料、环保材料。E-mail:bohong@cjlu.edu.cn
