摘要
在实验室条件下研究了曝气对生物促生剂修复城市黑臭河道水体效果的影响,并通过控制曝气时间及强度考察处理效果以确定曝气方式和曝气量。结果表明:在生物促生剂修复城市河道黑臭水体过程中使用曝气协同作用可大大增强生物促生剂的修复作用,加快修复速度。使用间歇曝气协同生物促生剂作用时效果与连续曝气相近,且可以降低运行成本。实验60 d后,上覆水COD、NH3-N和TP去除率分别达46.8%、98.7%和73.3%,上覆水pH由7.61提高至7.92;底泥削减达5.49 cm,底泥有机质削减率达10.5%。
Aeration was used during the remediation of black-odorous water in urban rivers by biostimula- nts. Effects were compared by controlling the aeration time and aeration rate to choose the best aeration mode and the most appropriate aeration amount. Results show that the remediation effects and speed of the black-odorous urban rivers by biostimulants can be improved by using aeration. The effects of intermitent aeration are close to continuous aeration and the running cost can be reduced. After 60 days of experiment, the removal rates of COD, NH3-N and TP were 46.8% , 98.7% and 73.3% , respectively; the pH of overlying water changed from 7.61 to 7.92 ; the reduction of sediment was 5.49 cm; and the removal rate of organic matters was 10.5%.
出处
《环境工程学报》
CAS
CSCD
北大核心
2012年第12期4281-4288,共8页
Chinese Journal of Environmental Engineering
基金
国家科技重大专项水污染控制与治理专项(2009ZX07317-006-02)
广西大学博士启动基金(XB2090162)
南宁市科学研究与技术开发计划(20123112)
南宁市环境保护专项资金
关键词
生物促生剂
曝气
城市河道
黑臭
竹排冲
biostimulants
aeration
urban river
black-odorous
Zhupai Creek
