摘要
利用Al^(3+)离子较易水解聚合的性质,合成了原位柱撑改性膨润土(PMCs),通过单因素试验探讨了PMCs的用量及搅拌时间对水样的去除效果;并对比了PMCs与PAC(聚合氯化铝)及纳基膨润土对水样的处理效果。结果表明:当添加3 g/50 mL PMCs、搅拌时间为60 min时,对养殖废水的处理效果最优,此时,CODcr、总氮、总磷、氨氮的去除率分别为90.27%、90.21%、90.1%、90.5%,且在最佳用量下,PMCs处理养殖废水的效果明显优于钠基膨润土,与PAC比较也占有一定的优势,希望能在未来的工业发展中大范围使用,逐渐代替具有微毒性的聚合氯化铝。
In-situ pillared modified bentonites (PMCs) were synthesized by using the properties of Al 3+ ions, which were easily hydrolyzed and polymerized. The single-factor test was used to investigate the removal effect of PMCs and the mixing time on the water samples. The treatment effect of the PMCs were compared with PAC and Na-bentonite on water samples. The conclusion is as follows: When 3 g/50 mL PMCs is addes and stirring time is 60 min, the treatment effect of aquaculture wastewater is the best. At this time, the removal rates of COD Cr , total nitrogen, total phosphorus and ammonia nitrogen are 90.27%, 90.21%, 90.1% and 90.5%, respectively. and at the optimum dosage, the effect of PMCs in treating aquaculture wastewater is obviously better than that of sodium bentonite. It also has certain advantages compared with PAC. It is hoped that it can be widely used in future industrial development, gradually replacing the micro-toxic polyaluminium chloride.
作者
章俊
陈旭
章文军
方雨博
ZHANG Jun;CHEN Xu;ZHANG Wenjun;FANG Yubo(Ningbo Tianhe Aquatic Ecosystems Engineering Co. Ltd., Ningbo 315040, China;Chengtong Kaisheng Ecological Construction Co. Ltd., Ningbo 315800, China;College of Biology and Environment, University of Zhejiang Wanli, Ningbo 315100, China)
出处
《矿产保护与利用》
2019年第2期85-88,94,共5页
Conservation and Utilization of Mineral Resources
基金
宁波市科技惠民项目(2017C50010)
浙江省"生物工程"一流学科开放基金项目(KF2018004)
关键词
改性膨润土
钠基膨润土
聚合氯化铝
改性
养殖废水
modified bentonite
Na-bentonite
polyaluminium chloride
modification
aquaculture wastewater
