生物吸附膜技术还原制革工业废水中铬的回收  

Recovery of chromium from tannery wastewater by biosorption membrane technology

作　　者：曲国章 Qu Guo Zhang(Chongqing Vocational College of resources and environmental protection,402360)

机构地区：[1]重庆资源与环境保护职业学院,402360

出　　处：《皮革制作与环保科技》2020年第4期86-88,91,共4页Leather Manufacture and Environmental Technology

摘　　要：铬在工业和环境中扮演着双重角色,一方面重要的是提高质量,另一方面损害寿命。为了摆脱这个问题,将需要维护两个面孔。计划进行实验,以从制革废水中回收铬。出于降低目的,低成本和废物被用作吸附剂,例如锯末,咖啡果皮和桉树皮被用作吸附剂。在所有吸附剂中,桉树在pH4时显示99%的吸附,接触时间为240分钟,质量负荷为3.5g/l。用三种不同类型的膜进行铬的回收,其中AFC99反渗透膜在最佳pH6.8,入口流速0的情况下显示99.9%的回收率。72m3/h,工作压力40巴。chromium plays a dual role in industry and environment.On the one hand,it is important to improve the quality,on the other hand,it damages the life span.In order to get rid of this problem,two faces will need to be maintained.Experiments are planned to recover chromium from tannery wastewater.For reduction purposes,low cost and waste are used as sorbents,such as sawdust,coffee peel and eucalyptus bark.Among all adsorbents,Eucalyptus showed 99%adsorption at pH4,contact time was 240 minutes,and mass load was 3.5g/l.Three different types of membrane were used to recover chromium.The afc99 reverse osmosis membrane showed a 99.9%recovery rate at the optimal pH of 6.8 and the inlet flow rate of 0.72m3/h,working pressure 40 bar.

关 键 词：吸附剂 化学废水 膜去除 

分 类 号：X70[环境科学与工程—环境工程]