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污染负荷对生物炭人工湿地净化效果的影响 被引量:1

Influence of Pollutant Loads on Purification Effect of Biocarbon Constructed Wetlands
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摘要 对生物炭基潜流人工湿地对农村生活污水净化效果进行中试实验,构建6组生物炭人工湿地,对比3组不同进水污染负荷条件下的实验结果,分析水质变化对各组生物炭人工湿地中化学需氧量、氨氮、总磷、总氮净化效果的影响。结果表明:在水力停留时间为36~48 h、水力负荷为10 cm/d的条件下,生物炭人工湿地对污水中总氮、氨氮、总磷、化学需氧量的去除率随着进水污染负荷的增大而减小;生物炭添加量的增加有利于人工湿地对总氮、氨氮的去除,各组人工湿地对化学需氧量的去除效果差别随污染负荷增加而增大,生物炭有助于加强人工湿地对化学需氧量的抗负荷能力;当污染负荷增加时,生物炭添加量和添加位置对总磷的去除效果的影响减弱,且生物炭人工湿地对总磷具有较好的抗负荷能力;在低污染负荷和中污染负荷条件下,各组生物炭人工湿地对4类污染物均有较高的去除率。 A pilot experiment was carried out to explore purification effect of biocarbon based underground flow constructed wetlands on rural domestic se wage.Six groups of biocarbon constructed wetlands were constructed and three groups of the experimental results under different influent pollutant loads were compared to analyze influence of water quality changes on purification effect of chemical oxygen demand,ammonia nitrogen,total phosphorus,and total nitrogen in each group of biocarbon artificial wetland.The results show that the removal rates of total nitrogen,ammonia nitrogen,total phosphorus,and chemical oxyge n demand in wastewater by the biocarbon constructed wetlands decrease with increase of the influent pollutant loads when the hydraulic retention time is 36 h to 48 h,and the hydraulic load is 10 cm/d.The increase of biocarbon addition is beneficial to the removal of total nitrogen and ammonia nitrogen pollutants by constructed wetlands.The difference of chemical oxygen demand removal efficiency by each group of constructed wetland increases with increase of the pollutant loads.Biocarbon is helpful to strengthen the chemical oxygen demand resistance capacity by constructed wetlands.When the pollutant loads increases,the influence of addition amount and location of biocarbon on removal effect of total phosphorus is weakened,and the biocarbon constructed wetlands have good load resistance to total phosphorus.Under the conditions of low pollutant load and medium pollutant load,the biocarbon constructed wetlands in each group have higher removal rates for the four types of pollutants.
作者 高海威 李双 徐立荣 徐祥熙 王荣震 徐晶 GAO Haiwei;LI Shuang;XU Lirong;XU Xiangxi;WANG Rongzhen;XU Jing(School of Water Conservancy and Environment,University of Jinan,Jinan 250022,Shandong,China;Jinxiuchuan Reservoir Services of Water Resources Engineering Service Center of Jinan City,Jinan 250112,Shandong,China)
出处 《济南大学学报(自然科学版)》 CAS 北大核心 2022年第4期397-403,共7页 Journal of University of Jinan(Science and Technology)
基金 国家自然科学基金项目(42007153) 山东省省级水利科研与技术推广项目(SDSLKY201803)。
关键词 生物炭 人工湿地 污染负荷 去除效率 biocarbon constructed wetland pollutant load removal efficiency
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