摘要
为缓解农村径流污染,将生态沟渠与小球藻固定化技术相结合,构建了藻球-植物生态沟渠,结合实验室研究和示范工程,分析其径流污染控制效果。研究表明,水芹和空心菜为最佳植物组合,且小球藻胶球的初始接种密度为2.1×10^6 cells/mL,胶球规格为3 mm,投加量为50 mL/m时,系统的净水效果最优且小球藻的生长活性最高。生态沟渠示范工程取得了较好的净化效果,非降雨时期生态沟渠出水基本达到地表Ⅲ类水标准。
In order to alleviate runoff pollution in rural areas,a chlorella bead-plant ecological ditch was constructed by combining chlorella immobilization technology and ecological ditch technology,and its effect on runoff pollution control was investigated both in laboratory research and demonstration project.Laboratory research demonstrated that Ipomoea aquatica and Oenanthe javanica were the optimal plants.When initial inoculation density of chlorella beads was 2.1×10^6 cells/mL,diameter was 3 mm and dosage was 50 mL/m,the best water purification effect and the highest growth activity of chlorella were achieved by the system.A better purification effect was achieved by demonstration project of chlorella bead-plant ecological ditch.During non-rainfall period,the effluent from ecological ditch basically met the Class Ⅲ criteria of GB 3838—2002.
作者
陆敏博
刘芸
王宇翔
钱冬旭
耿冰
杨小丽
宋海亮
LU Minbo;LIU Yun;WANG Yuxiang;QIAN Dongxu;GENG Bing;YANG Xiaoli;SONG Hailiang(CCDI〈Suzhou〉Exploration&Design Consultant Co.,Ltd.,Suzhou 215123,China;School of Civil Engineering,Southeast University,Nanjing 211189,China;Shanghai National Engineering Research Center of Urban Water Resources Co.,Ltd.,Shanghai 200082,China;School of Environment Nanjing Normal University,Nanjing 210023,China)
出处
《净水技术》
CAS
2020年第12期137-143,共7页
Water Purification Technology
基金
国家重点研发计划项目(2019YFD1100205)
国家科技重大专项课题(2017ZX07202004)。
关键词
农村径流污染
生态沟渠
小球藻固定化
示范工程
rural runoff pollution
ecological ditch
chlorella immobilization
demonstration project
作者简介
陆敏博(1982-),男,硕士,研究方向为给排水工程规划与设计、水环境技术,E-mail:lu.minbo@ccdi.com.cn;通信作者:杨小丽(1977-),女,教授,研究方向为水污染控制,E-mail:yangxiaoli@seu.edu.cn。
