采用煤质粒状活性炭对水体中的BrO3^-和Br的吸附规律进行考察,同时也研究了活性炭吸附溴酸盐的影响因素,如投炭量、pH、Br含量等。结果表明,在单吸附条件下活性炭对BrO3^-和Br的吸附去除率分别为95.7%和70.8%;发现pH和Br含量对BrO3^-吸附影响较大,当pH从3.0升高到12.0时,BrO3^-去除率降低了近60%;Br-的质量浓度从0增加到5mg/L时,去除率降低了20%左右。可见,较低的pH和低含量的阴离子含量有利于溴酸盐的吸附。
The regularity of adsorption removal for BrOf and Br in water has been tested by coal granular activated carbon. Also the effect factors of GAC adsorption bromate, such as carbon quantity, pH, bromine concentration and so on, has been studied. The result show that in single adsorbent solution adsorption removal rates for BrO3 and Br is 95.7% and 70.8%, respectively; that pH and Br content has significant impact on BrO3- removal. When pH increased from 3.0 to 12.0, BrO3- removal rate reduced approximately 60 percentage point; Similarly, when mass concentration of Br in raw water range from 0 to 5 mg/L, its removal reduced by about 20 percentage point. So it is favorable for bromate adsorption in lower pH and lower anion content.