摘要
通过静态试验、动态试验和再生试验研究了天然斜发沸石吸附氨氮的热力学性质、再生性能和影响因素。试验结果表明:斜发沸石对氨氮的静态饱和吸附量为3100mg/100g,当氨氮浓度为35mg/L时,动态饱和吸附量为2200mg/100g,分别是粉末活性炭、颗粒活性炭、硅藻土的20倍、23倍、27.5倍,选择重量比为3:7的NaCl+NaOH混合液作为斜发沸石的再生剂可进行3次重复再生使用,有效寿命可达140h以上。斜发沸石处理含氨废水具有重要实用前景。
The absorption capability, the regeneration capability and the influencing factors of the clinoptilolite to ammonia nitrogen are studied through static state test ,dynamic test and regenerative test. The experiment result indicates that the saturated adsorptive quantity of clinoptilolite in the static state is 3 100 mg/100 g,when the concentration of ammonia nitrogen is 35 mg/L, the saturated adsorptive quantity in the dynamic state is about 2 200 mg/100 g, and was 20, 23 and 27.5 times of the pulverous active carbon's, the granular active carbon's and the diatomite's respectively. The mixed solution of NaCl+NaOH (the weight proportion is 3:7) could be repeatedly used three times as the regeneration reagent of clinoptilolite, and the effective life is exceeded 140 h. Clinoptilolite has important practicality when it is used to dispose the wastewater containing ammonia nitrogen.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第1期62-65,共4页
Journal of Chongqing University
关键词
天然沸石
吸附
氨氮
再生
clinoptilolite
absorb
ammonia nitrogen
regenerate P
