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- Title
竹炭人工湿地净化铁锰效果及其微生物群落.
- Authors
王新帅; 董堃; 秀玖; 贺瑶; 游少鸿; 林华; 俞果
- Abstract
There is a serious iron and manganese pollution problem in groundwater in China,which has been listed as one of the many environmental problems that need to solve urgently.In order to explore the purification effect of bamboo charcoal mixed substrate horizontal subsurface flow constructed wetland on iron and manganese wastewater and the microbial community structure characteristics,bamboo biomass charcoal was added to the horizontal subsurface flow constructed wetland under laboratory conditions to study the iron and manganese in wetland wastewater concentration changes and changes in the structure of the microbial community.Experimental studies have found that when the constructed wetland is operated with a hydraulic retention time of 24 hours,and the heavy metal content of the wetland set to 30 mg/L and 20 mg/L at the inlet Fe2+ and Mn2+ concentration values,respectively,and bamboo charcoal added to the quartz sand bamboo charcoal,the mixed matrix constructed wetland has obvious advantages in removing Fe2+ and Mn2+ than the single quartz sand matrix constructed wetland.The removal rates of Fe2+ and Mn2+ both reached more than 90%,93.46% and 90.87%,respectively.In terms of microbial community,the richness and diversity of bacterial communities in the rhizosphere of calamus in the mixed matrix of quartz sand and bamboo charcoal are greater than those in the rhizosphere of calamus in the quartz sand matrix.The bacteria in the mixed matrix of quartz sand and bamboo and charcoal can survive better around the rhizosphere of calamus.
- Subjects
CHINA; SAND; CONSTRUCTED wetlands; CHARCOAL; ADVECTION; GROUNDWATER pollution; HEAVY metals
- Publication
Environmental Science & Technology (10036504), 2022, Vol 45, Issue 3, p73
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.1239.21.338