期刊论文

中文

中国给水排水

1000-4602

2016

32

17

81-84

10.19853/j.zgjsps.1000-4602.2016.17.018

湖南省教育厅一般项目（15C0260） 湖南省高校产学研合作示范基地项目（湘教通[2014]239号） 湖南省教育厅优秀青年项目（138009）

本校为第一机构

采用污水厂剩余污泥作为原料,以硫酸作为活化剂制备吸附剂,并将其应用到含氨氮废水处理中。进而系统地研究了溶液初始pH值、氨氮初始浓度、吸附时间等因素对硫酸活化市政污泥吸附氨氮的影响。结果表明,在吸附剂投加量为2 g/L、PH值为7.5、温度为303 K条件下,硫酸活化市政污泥对氨氮的吸附效果最佳。吸附动力学和热力学研究结果表明,吸附剂对氨氮的吸附过程可用准二级动力学模型(R~2=0.998 6)来描述,且均符合Langmuir等温吸附模型、Freundl-ich等温吸附模型和Temkin等温吸附模型。由Langmuir等温吸附模型计算得到活化市政污泥对氨氮的最大吸附容量为44.84 mg/g。颗粒内扩散速率也是其吸附反应的限...

Excess sewage sludge activated by H2SOg solution was used to prepare adsorbent and applied for the treatment of wastewater containing ammonium. The influences of ammonium concentra- tion, pH and adsorption time on ammonium adsorption using the activated sludge were investigated. The adsorption capacity of the adsorbent for ammonium was the best at dosage of 2 g/L, pH 7.5 and tempera- ture of 303 K. Adsorption kinetics and thermodynamic studies showed that the adsorption process of am- monium onto the adsorbent could be fitted with pseudo-second...