弗罗里硅土处理低质量浓度氨氮废水研究

Experimental Study on Adsorption Removal of Ammonia Nitrogen from Low Concentration Petrochemical Wastewater by Florisil

吴巍 刘玲 赖晓晨 王雪清 郝晓霞

Wei Wu Ling Liu Xiaochen Lai Xueqing Wang Xiaoxia Hao

中国石化大连石油化工研究院，辽宁 大连 116045

Sinopec Dalian Research Institute of Petroleum and Petrochemicals，Dalian Liaoning 116045，China

利用弗罗里硅土吸附脱除石化低浓度废水中的氨氮。分别采用BET、SEM及XRF对弗罗里硅土进行表征。考察剂液比、吸附时间、pH、吸附温度及氨氮初始质量浓度等因素对吸附脱除氨氮效果的影响。结果表明，在氨氮初始质量浓度为50.00 mg/L、剂液比为2 g/L、pH为7、吸附温度为293.15 K和吸附时间为5 min的条件下，氨氮去除效果最佳；在此条件下处理石化低质量浓度氨氮废水，氨氮质量浓度从17.53 mg/L降至5.16 mg/L，去除率达到70.6%，满足GB 31570-2015的排放标准。

The florisil was used as adsorbent for the removal of ammonia nitrogen from low concentration petrochemical wastewater. The florisil was characterized by BET, SEM and XRF, respectively. The effects of the ratio of agent to liquid, adsorption time, pH, adsorption temperature and initial mass concentration of ammonia nitrogen on the effect of adsorption and removal of ammonia nitrogen were investigated. The results show that when the initial concentration of ammonia nitrogen is 50.00 mg/L, the ratio of agent to liquid is 2 g/L, pH value is 7, the adsorption temperature is 293.15 K, and the adsorption time is 5 min, the adsorption effect of the florisil presented superior performance. When the petrochemical wastewater with low concentration of ammonia nitrogen is treated under these conditions, the ammonia nitrogen concentration decreased from 17.53 mg/L to 5.16 mg/L, and the removal rate reached 70.6%, meeting the emission standard of GB 31570-2015.

国家重点研发计划项目(2018YFC1803301)

10.3969/j.issn.1672-6952.2022.03.003