摘要
通过静态浸出和动态淋溶实验,探讨生物质炭对电解锰废渣中Mn、Cd、Zn的淋溶效应.结果表明：电解锰废渣浸出液中Mn、Cd、Zn的平均含量分别为73.71 mg/L、5.87 mg/L、0.270 mg/L;淋溶液中Mn、Cd、Zn的平均含量为256.80 mg/L、0.045 1 mg/L、0.33 mg/L,其中Mn、Cd均超过地表水Ⅲ类质量标准.电解锰废渣添加2％ ～4％生物质炭后,淋溶液中Mn、Cd、Zn平均含量分别减少了0.97％ ～ 37.4％、3.80％ ～ 53.7％、8.7％ ～ 56.5％,当生物质炭添加量为6％时,Mn、Cd、Zn平均含量减少程度分别处在2.59％～37.4％、15.7％～ 53.7％、25％ ～ 56.5％,说明生物质炭能明显抑制电解锰废渣的重金属向水体的迁移.
Discussed the leaching effects of biomass charcoal on Mn, Cd and Zn in manganese slag by the static and dynamic experiments.The results showed that the average content is 73.7ling/L, 5. 870 rag/L,0. 270 mg/L of Mn, Cd and Zn in the leaching solution ofmanganese slag, respectively, but the average content was 256.80mg/L, 0. 0451 mg/L in leaching liquor of manganese slag, respectively,which far exceed the HI class of the quality standards for surface water. The average content of Mn, Cd and Zn in leaching liquor ofmanganese slag reduced 3.80% N 53.7% , 0. 97% - 37.4% , 8.7% - 56.5% separately when adding between 2 and 4 percent biomasscharcoal in manganese waste, and the average content of Mn, Cd and Zn in leaching liquor of manganese slag reduced 15.7% -53.7% ,2.59% - 37.4% , 25%- 56.5% respectively by addition to 6%. It explained biomass charcoal can inhibit migration of heavy mental inmanganese slag to water obviously.
出处
《环境影响评价》
2015年第1期67-70,共4页
Environmental Impact Assessment
基金
贵州省科技厅农业科技攻关项目(黔科合NY[2013]3075号)
关键词
电解锰废渣
生物质炭
重金属迁移
manganese slag
biomass charcoal
migration of heavy mental
