NaCl改性沸石对含铁锰微污染地下水处理效能  

Treatment Effect of of Micro-Polluted Groundwater with Original Iron and Manganese by NaCl Modified Zeolite

作　　者：赵玉华[1] 常启雷[2] 林长宇 李妍[1] 朴芬淑[4] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]中国航天建设工程公司,北京100071 [3]沈阳市自来水总公司一水厂,辽宁沈阳110141 [4]沈阳大学建工系,辽宁沈阳110044

出　　处：《沈阳建筑大学学报（自然科学版）》2010年第5期966-970,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家重大水专项(2009ZX07424-002-003);沈阳建筑大学辽宁省高校重点实验室基金项目(SZ-200906)

摘　　要：目的对天然沸石进行改性,提高去除微污染含铁锰地下水中铁、锰、氨氮和有机物的效能.方法采用NaCl溶液对天然沸石进行浸泡改性,分别用静态吸附试验和动态过滤试验考察改性沸石的吸附和过滤效果.结果改性沸石对铁、锰、氨氮和有机物的吸附和过滤能力均有明显提高.当原水中铁、锰、氨氮和有机物分别为2.23mg·L-1、2.16mg·L-1、3.57mg·L-1和2.38mg·L-1时,NaCl改性沸石对其吸附容量分别是天然沸石的2.29、2.20、1.47和1.58倍.动态过滤试验与静态吸附试验结果基本一致.改性沸石对氨氮和有机物的过滤效果均优于锰砂,特别是氨氮的去除效果,去除率平均提高48.85个百分点.结论沸石经NaCl溶液浸泡改性后,其对水中铁、锰、氨氮和有机物的吸附和过滤性能均明显提高,且同时除氨氮和有机物效能较锰砂高.Zeolite modified with NaCl solution by means of soaking was used to treat groundwater micro-polluted with original iron and manganese for adsorbent and filter material by jar test and filtration test.The adsorption and filtration effect of zeolite modified for iron,manganese,NH3-N and CODMn was improved significantly.Adsorption capacity of zeolite modified for iron,manganese,NH3-N and CODMn was severally 2.29 times,2.20 times,1.47 times and 1.58 times by natural zelite,with the test water for iron concentration 2.23 mg·L-1,menganese 2.16 mg·L-1,NH3-N 3.57mg·L-1 and CODMn 2.38 mg·L-1.Filtration effect was identity roughly with the adsorption effect by jar.Filtration effect by zeolite modified for NH3-N and CODMn was better than manganese sand especially for NH3-N with removal rate 48.58 percentage points higher.So adsorption and filtration effect by zeolite modified was more than natural zelite,and performance of zeolite modified to remove NH3-N and CODMn from the water was better than manganese sand.

关 键 词：微污染地下水 改性沸石 铁锰 过滤 

分 类 号：TU991.2[建筑科学—市政工程]