摘要
给水污泥是饮用水处理过程中产生的固体废物,主要成分包括有机物和铝氧化物等无机物,其处置一直是环境领域的重点问题。研究开发了一种新的给水污泥资源化的方法,将给水污泥和三聚氰胺以一定比例混合,进行一步共热法掺氮改性制备得到新型掺氮给水污泥基光催化剂,利用UV_(365nm)-LED光催化掺氮给水污泥降解水中孔雀石绿、碘帕醇和双酚A等典型有机微污染物,解析了光催化降解动力学及催化机制。结果表明,光催化掺氮给水污泥基材料通过静电吸附和·OH、·O_(2)^(-)氧化作用,对孔雀石绿(20 mg/L)、碘帕醇(20 mg/L)和双酚A(10 mg/L)的去除率均能达到100%。研究为给水污泥资源化及微污染物的去除提供了新思路。
Water treatment sludge is a solid waste produced in the process of drinking water treatment,and its main components include inorganic substances such as organic matter and alumi-num oxide,and its disposal has been a key issue in the environmental field.In this study,A new method of recycling water treatment sludge was developed.Water treatment sludge and melamine were mixed in a certain proportion,and a new nitrogen-doped water treatment sludge photocatalyst was prepared by one-step co-heating nitrogen modification.UV_(365nm)-LED photocatalysis was used to degrade typical organic micro-pollutants such as malachite green,iopamidol and bisphenol A in the nitrogen-doped water treatment sludge.The photocatalytic degradation kinetics and catalytic mechanism were analyzed.The results showed that the removal rates of malachite green(20 mg/L),iopamidol(20 mg/L)and bisphenol A(10 mg/L)of the photocatalytic nitrogen-doped water treat-ment sludge-based material could reach 100%through electrostatic adsorption and OH and·O_(2)^(-) oxidation.The research provides a new idea for the reclamation of water treatment sludge and the removal of micropollutants.
作者
林小川
韦传旭
章瀚午
苏良湖
谈超群
LIN Xiaochuan;WEI Chuanxu;ZHANG Hanwu;SU Lianghu;TAN Chaoqun(School of Civil Engineering,Southeast University,Nanjing 210096,China;Nanjing Institute of Environmental Science,Ministry of Ecology and Environment,Nanjing 210042,China)
出处
《给水排水》
北大核心
2025年第8期66-72,80,共8页
Water & Wastewater Engineering
基金
国家自然科学基金(52470216)。
关键词
给水污泥
掺氮改性
光催化
微污染物
Water treatment sludge
Nitrogen modification
Photocatalysis
Micropollutant
作者简介
通信作者:谈超群,男,1989年出生,江西南昌人,博士,教授。主要研究方向为水污染控制、智慧水务等。通信处:211189江苏省南京市江宁区东南大学路2号,E-mail:tancq@seu.edu.cn。
