摘要
天然沸石应用广泛,对生活污水中的污染物如氮磷具有一定的吸附能力,通过物理化学的方法改性后可提高沸石的孔隙率和吸附效果,达到有效去除污水中氨磷的目的。以天然沸石为载体,通过碱液预处理+盐(氯化钠溶液)复合改性后并制成颗粒,研究投加复合改性沸石对MBR工艺处理污水的影响,考查复合改性沸石(MZ)投加量、反应温度及反应时间对污水中各基质(COD、TP和NH+4-N)去除效率和吸附量的影响效果。实验结果表明,当复合改性沸石(MZ)投加量为10 g/L时,对MBR工艺处理污水中COD、NH+4-N和TP去除率为最佳,微生物以复合改性沸石吸附剂为载体,改善了吸附特性,强化了对各基质的去除。
Natural zeolite is widely used and has a certain adsorption capacity for pollutants such as nitrogen and phosphorus in domestic sewage.After modification by physical and chemical methods,the porosity and adsorption effect of zeolite can be improved,so as to effectively remove ammonia and phosphorus in sewage.To achieve the purpose of effectively removing each substrate,natural zeolite was used as carrier in this paper,particles were prepared by alkaline pretreatment and salt(sodium chloride solution)composite modification.Sewage treatment in MBR were studied on the compound modification zeolite granules.The effects of amount of modified zeolite,reaction temperature and reaction time on the removal efficiency and adsorption capacity of various substrates(such as COD,TP and NH+4-N)in wastewater were investigated.The results showed that when the dosage of MZ is 10 g/L,the removal rate of COD,NH+4-N and TP in wastewater is the best,and the microorganisms are enriched with MZ adsorbent as the carrier,the adsorption traits are improved,and the removal efficiency of substrates also increased.
作者
程永伟
李理
潘洁
任友昌
彭怡
CHENG Yongwei;LI li;PAN Jie;REN Youchang;PENG Yi(Faculty of Environment and Chemical Engineering,Kunming Metallurgy College,Kunming 650033,China)
出处
《昆明冶金高等专科学校学报》
CAS
2023年第6期27-30,38,共5页
Journal of Kunming Metallurgy College
关键词
复合改性沸石
污水处理
MBR工艺
compound modification zeolite
sewage disposal
MBR technics
