摘要
以垃圾渗滤液生化出水为对象,研究采用牛粪灰(CDA)负载纳米Fe_3O_4(n-Fe_3O_4@CDA)作为催化剂进行催化臭氧氧化处理。结果表明,在反应温度为25℃、时间为120 min,通入臭氧、催化剂投加量分别为3.0、0.8 g/L的条件下,废水COD、色度的去除率分别达到50%、89%,可生物降解性(BOD_5/COD)从0.05增加到0.32。经催化臭氧氧化后,渗滤液中的酚类物质质量分数由28.08%大幅下降至8.56%,烷烃的质量分数从34.12%降至23.87%,这主要是复杂化合物苯环打开以及一些中间产物的形成。n-Fe_3O_4@CDA是一种优良的微气泡臭氧催化剂。
The leachate biological effluent was treated by Fe3O4 nanoparticles loaded cow-dung ash composites(n-Fe3O4@CDA)through catalytic ozonation.The results showed that,the wastewater COD and chroma removal rate reached 50% and 89% respectively and biodegradation(BOD5/COD)increased from 0.05 to 0.32 when reaction temperature and time was 25 ℃ and 120 min respectively,n-Fe3O4@CDA and input ozone dosage was 3.0 and 0.8 g/L respectively.The percentage of phenolic compounds decreased sharply from 28.08% to 8.56% and mass fraction of alkane decreased from 34.12% to 23.87% after catalytic ozonation,largely because of the opening of complex benzene ring and the formation of organic intermediates.n-Fe3O4@CDA is a promising catalyst for catalytic micro-ozonation process.
作者
马翠
袁鹏飞
刘亚琦
张寒旭
何争光
MA Cui;YUAN Pengfei;LIU Yaqi;ZHANG Hanxu;HE Zhengguang(School of Water Consen ancy & Environment,Zhengzhou University,Zhengzhou 450001,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2019年第4期43-48,共6页
Technology of Water Treatment
基金
国家"十三五"水专项(2017ZX07602-001-002)
