摘要
以粉煤灰为原料,用混酸酸溶制取改性粉煤灰吸附剂,并处理生活污水。结果表明:最佳酸溶时间为3h,其固体溶出率约25wt%;当改性粉煤灰的用量为100g/L时,吸附效果最佳,COD的吸附率达到75.4%,出水达到《城市污水处理厂污染物排放标准》(GB18918-2002)中的二级标准限值(100mg/L);改性后吸附能力提高了近三倍。
Modified fly ash adsorbent was prepared by mixed acid solution using fly ash as raw materials and the treatment of domestic wastewater were investigated. The results showed that the best acid-soluble time was 3h, its solid solubility was 25wt%; adsorption effect is the best when the modified fly ash adsorbent dosage was 100g/L; and the absorption rate of COD were achieved 75.4% .,which were better than level II for ＂city sewage treatment plant pollutant discharge standard ＂ （GB 18918-2002）. After the modification of fly ash, adsorption capacity were increased nearly three times.
出处
《天津化工》
CAS
2013年第2期8-9,共2页
Tianjin Chemical Industry
关键词
粉煤灰
混酸
改性
吸附
fly ash
mixed acid
modification
adsorption
