生物炭改良曝气折流式人工湿地对生活污水的降解效果  

Degradation Effect of Biochar Modified Aerated Folding Flow Constructed Wetland on Domestic Sewage

作　　者：王军 殷皓 马洁晨 陈建 汪军 奚姗姗 WANG Jun;YIN Hao;MA Jiechen;CHEN Jian;WANG Jun;XI Shanshan(Anhui Academy of Environmental Sciences,Hefei 230071,China;China Energy Conservation Guozhen Environmental Technology Co.,Ltd,Hefei 230093,China;Anhui Tongyuan Environmental Energy Conservation Co.,Ltd,Hefei 230000,China;Faculty of Agriculture and Food Engineering,Baise University,Baise 533000,China;Anhui Jianzhu University,Hefei 230009,China)

机构地区：[1]安徽省生态环境科学研究院,安徽合肥230071 [2]中节能国祯环保科技有限公司,安徽合肥230093 [3]安徽省通源环境节能股份有限公司,安徽合肥230000 [4]广西百色学院农业与食品工程学院,广西百色533000 [5]安徽建筑大学,安徽合肥230009

出　　处：《水处理技术》2024年第8期122-127,133,共7页Technology of Water Treatment

基　　金：安徽省科技重大专项(202203a07020034);广西科技基地和人才专项(桂科AD22080069和AD22035015);广西一流学科建设项目(农业资源与环境)。

摘　　要：为探究生物炭对折流式人工湿地的改良效果,明确生物炭在折流式人工湿地中的最佳应用方法,构建了生物炭曝气折流式人工湿地。通过小试实验考察了添加污泥生物炭对湿地处理生活污水中污染物效果的影响,研究了不同曝气时间和水力负荷条件下,湿地对污染物去除效果的变化,并确定合适运行参数。结果表明:添加污泥生物炭对折流式人工湿地净化污水有显著改良作用,对COD、NH_(4)^(+)-N、TN和TP的平均去除率分别提高了5.41%、5.31%、12.16%、25.46%;随着曝气时间增加,COD、NH_(4)^(+)-N的去除率增加,而TN和TP的去除率先升高后降低,适当的曝气时间才是高效去除污染物的关键;随着水力负荷增加,COD、NH_(4)^(+)-N、TN、TP的去除效果均下降;在曝气条件为0.5 L/min,4 h/d,水力负荷为0.37 m^(3)/(m^(2)·d)时,污泥生物炭改良的曝气折流式人工湿对污染物的去除效果最佳。因此,添加污泥生物炭能够实现折流式人工湿地对污染物的高效去除,将其用作湿地基质具有广阔应用前景,对人工湿地去除生活污水的工程应用具有一定参考价值。In order to investigate the improvement effect of biochar on the folded-flow artificial wetland and to clarify the best application method of biochar in the folded-flow artificial wetland,the biochar aeration folded-flow artificial wetland was constructed.The effect of adding sludge biochar on the treatment of pollutants in domestic wastewater in the wetland was investigated through a small pilot test,and the changes of pollutant removal effect in the wetland were studied under different aeration time and hydraulic loading conditions,and the suitable operation parameters were determined.The results showed that the addition of sludge biochar had a significant improvement effect on the purification of wastewater in the foldedflow artificial wetland,and the average removal rates of COD,NH_4~+-N,TN and TP were increased by 5.41%,5.31%,12.16%and 25.46%,respectively;with the increase of the aeration time,the removal rates of COD and NH_4~+-N increased,while the removal rates of TN and TP firstly increased and then decreased,and the appropriate aeration time is the most effective way to remove pollutants from domestic wastewater.Appropriate aeration time is the key to efficient pollutant removal;with the increase of hydraulic load,the removal effect of COD,NH_4~+-N,TN,and TP decreased;the best pollutant removal effect was achieved by the aeration folded-flow artificial wet modified with sludge biochar under the aeration condition of0.5 L/min,4 h/d,and a hydraulic load of 0.37 m^(3)/(m^(2)·d).Therefore,the addition of sludge biochar can realize the efficient removal of pollutants in the fold-flow artificial wetland,and its use as a wetland substrate has a broad application prospect,which has a certain reference value for the engineering application of artificial wetland for removing domestic sewage.

关 键 词：污泥生物炭 折流式人工湿地 曝气时间 水力负荷 

分 类 号：X705[环境科学与工程—环境工程]