化工进展2018，Vol.37Issue(5)：1999-2009,11.DOI:10.16085/j.issn.1000-6613.2017-1554
基于固定化载体材料海绵铁净化微污染河水特性研究
Study on the characteristics of the micro-pollution river purified by the immobilized carrier filler sponge iron
摘要
Abstract
For the city river in situ purification of sewage to provide scientific and effective technical support,the SEM,XRD and EDS characterization methods were used,the structural characteristics and main components of new filler sponge iron were analyzed,and the effect of sponge iron on total phosphorus adsorption was studied by single factor experiment. Finally,the self-designed BAF (aeration biofilter)with sponge iron as filler was experimented. The results is shown below. ① The sponge iron phase is mainly Fe,at the same time there are Fe2O3,Fe3O4,Fe2CO3and Fe3C(among them,Fe,C and O content were 58.79%,21.85%,19.36%). This explained the sponge iron has a strong reductive,providing reductive electrons for efficient denitrification. ②The temperature of the sponge iron adsorption removal effect has little effect,P concentration higher the greater the amount of adsorption,when the P concentration of 10mg/L,the sponge iron dosage does not affect the removal rate,when the concentration of P was more than 10mg/L,the removal rate increased with the increase of sponge iron dosage,the lower the pH,the more favorable the sponge iron adsorption P. ③In the BAF reactor,simulation of natural purification state,without aeration,water quality serious deterioration,after the reverse rinse,the aeration was resumed,the removal rate increased(COD, NH4+-N,TN and TP were increased by 11%,71%,31% and 4%),but after a long period of continuous operation,the reactor removal effect was slightly reduced,COD and TN were reduced by 5%,4% and 18%,respectively,during the same 6h period. ④ Sponge iron filler on the surface of the formation of a unique biological community,high biological diversity,and the higher the DO in the reactor,the richer the species community structure,the higher the diversity,while the sponge iron on the removal of pollutants is adsorbed and microbial common influence.关键词
城市内河/海绵铁/载体/吸附(作用)/生物膜/生物多样性Key words
urban river/sponge iron/support/adsorption/biofilm/biological diversity分类
资源环境引用本文复制引用
万琼,吴仪,王信,吴英海,魏东洋,贺涛,姜琦..基于固定化载体材料海绵铁净化微污染河水特性研究[J].化工进展,2018,37(5):1999-2009,11.基金项目
国家水体污染控制与治理科技重大专项(2015ZX07204-002)、广东省自然科学基金(2016A030313021)及中央级公益性科研院所基本科研业务专项(PM-ZX021-201510-002). （2015ZX07204-002）
