面向垃圾渗滤液深度处理的抗污染纳滤膜应用研究
Research on anti-fouling nanofiltration membranes for deep treatment of landfill leachate
陈伯志 1马悦 1李璐 1付正军 1王龙 2郁凯 1孙世鹏2
作者信息
- 1. 南京蔚华膜科技有限公司,南京 211899
- 2. 南京工业大学化工学院,南京 211816
- 折叠
摘要
截至2021年,中国城市垃圾年产量高达1.5×108 t,垃圾处理产生的渗滤液约占垃圾量的25％～30％.随着国家对环境保护要求的逐步提高,垃圾渗滤液的深度处理迫在眉睫.纳滤膜具有独特的孔径和电荷效应,对小分子有机物和二价离子有很高的分离精度,因此在垃圾渗滤液深度处理中有广泛应用前景.然而膜污染问题一直是纳滤膜应用过程中无法避免的关键问题之一.本项目采用南京蔚华膜科技有限公司生产的抗污染纳滤膜(AMNF-8040)对安徽淮南某生活垃圾填埋场的渗滤液进行深度处理.结果表明,AMNF-8040纳滤膜对垃圾渗滤液中的化学需氧量(CODCr)截留率大于96.5％,对氨氮的截留大于89.8％.出水水质远优于国家标准.与同期使用的进口竞品纳滤膜相比,AMNF-8040纳滤膜表现出更出色的抗污染性能,并且具有良好的长期稳定性.因此,AMNF-8040抗污染纳滤膜在垃圾渗滤液深度处理领域展现出了广阔的应用前景.
Abstract
As of 2021,the annual production of municipal solid waste in Chinese cities reached a staggering 150 million tons,with leachate from waste treatment accounting for approximately 25％-30％of the waste volume.With the gradual increase in environmental protection requirements imposed by the government,there is an urgent need for advanced treatment of leachate.Nanofiltration membranes,characterized by unique pore sizes and charge effects,exhibit high separation precision for small organic molecules and divalent ions,making them promising for deep treatment of landfill leachate.However,membrane fouling has always been one of the inevitable key issues in the application of nanofiltration membranes.In this project,the anti-fouling nanofiltration membrane(AMNF-8040)produced by Nanjing Weihua Membrane Technology Co.,Ltd.was employed to perform deep treatment on the leachate from a municipal landfill in Huainan,Anhui Province.The AMNF-8040 nanofiltration membrane achieved a CODCr retention rate of over 96.5％and an ammonia nitrogen retention rate of over 89.8％in the leachate.The treated water quality far exceeded national standards.Compared to a foreign brand of nanofiltration membrane used during the same period,the AMNF-8040 membrane demonstrated superior anti-fouling performance and exhibited good long-term stability.Therefore,the AMNF-8040 anti-fouling nanofiltration membrane shows broad prospects for application in the field of deep treatment of landfill leachate.
关键词
纳滤膜/垃圾渗滤液/抗污染Key words
nanofiltration membrane/landfill leachate/anti-fouling引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据