摘要
掺配剩余污泥是改良生物滞留设施基质的有效途径,通过自然养护可提高剩余污泥基质的稳定性,降低基质中污染物的析出风险。分析了不同自然养护时间下剩余污泥基质的理化性质和污染物含量的变化规律,并探究了自然养护对生物滞留设施雨水水文调控能力和污染物去除效果的影响。结果表明:通过自然养护可提升剩余污泥基质生物滞留设施的雨水水文调控能力,并强化对典型径流污染物的去除作用;自然养护20 d时,剩余污泥基质生物滞留设施的场次径流总量削减率可提高16.91%;参照《地表水环境质量标准》(GB 3838—2002),出水中NH_(4)^(+)-N、TN、TP和COD的浓度分别符合水体Ⅳ类、Ⅴ类、Ⅲ类和Ⅳ类水质标准,平均出水浓度分别为1.33、1.83、0.194和23.38 mg/L。
Mixing excess sludge is an effective way to improve the substrate of bioretention system.Nature maintenance can improve the stability of the excess sludge substrate and reduce the risk of substrate pollutant release.This article analyzes the changes in the physicochemical properties and pollutant content of excess sludge substrate in different nature maintenance time,and explores the impact of nature maintenance on the stormwater hydrological performance and pollutant removal efficiency of the bioretention system.The results indicate that nature maintenance can enhance the stormwater hydrological performance and remove typical runoff pollutants of excess sludge substrate bioretention systems;after 20 days of nature maintenance,the total runoff reduction rate of the excess sludge substrate bioremediation system increased by 16.91%;based on the Environmental Quality Standard for Surface Water(GB 3838—2002),the concentrations of NH_(4)^(+)-N,TN,TP and COD in the effluent meet the water quality standards for Class Ⅵ,Ⅴ,Ⅲ and IV,respectively,and average effluent concentration is 1.33,1.83,0.194 and 23.38 mg/L.
作者
张炜
杨古月
李橙
邓凯予
陈香宇
张仪杰
李思敏
ZHANG Wei;YANG Guyue;LI Cheng;DENG Kaiyu;CHEN Xiangyu;ZHANG Yijie;LI Simin(Hebei Technology Innovation Center for Water Pollution Control and Water Ecological Remediation,Hebei University of Engineering,Handan 056038,China;Hebei Engineering Research Center of Sewage Treatment and Resource Utilization,Hebei University of Engineering,Handan 056038,China;Handan Key Laboratory of Water Utilization Technology,Hebei University of Engineering,Handan 056038,China;Hebei Provincial Laboratory of Water Environmental Science,Hebei Academy of Ecological and Environmental Science,Shijiazhuang 050031,China)
出处
《安全与环境工程》
CAS
CSCD
北大核心
2024年第6期200-206,216,共8页
Safety and Environmental Engineering
基金
国家科技重大专项项目(2021YFC1910601)
河北省自然科学基金项目(E2018402172)
河北省水环境科学重点实验室开放课题项目(HBSHJ202104)。
关键词
生物滞留设施
剩余污泥基质
自然养护
水文调控能力
污染物去除
bioretention system
excess sludge substrate
nature maintenance
hydrological performance
runoff pollutant removal
