[煤渣与草皮基质构建的垂直流湿地系统对城市污水的净化效率]
[Purification efficiency of vertical-flow wetland system constructed by cinder and turf substrate on municipal wastewater].
作者信息
Cui Lihua, Zhu Xizhen, Luo Shiming, Liu Yihu
机构信息
Department of Environmental Science and Engineering, South China Agricultural University, Guangzhou 510642, China.
出版信息
Ying Yong Sheng Tai Xue Bao. 2003 Apr;14(4):597-600.
Vertical-flow constructed wetlands (VFCWs) system not only has a higher hydraulic loading rate (54-64 cm.d-1), but also has a good removal efficiency for organics, ammonia nitrogen (AN) and total phosphorus (TP). The removal efficiencies of COD, BOD5, AN, and TP for septic tank effluent were 76-87%, 82-92%, 75-85% and 77-91%, respectively, and the average effluent concentrations of COD, BOD5, AN, and TP in the treated effluent were less than 60, 20, 25 and 2.0 mg.L-1, respectively. A comparison of planted and unplanted columns showed that plantation of Cyperus alternifolius could increase the removal rates of AN, TN, and TP by 2-3%, 4-6%, and 10-14%, respectively.
垂直流人工湿地（VFCWs）系统不仅具有较高的水力负荷率（54 - 64厘米·天⁻¹），而且对有机物、氨氮（AN）和总磷（TP）具有良好的去除效率。化粪池出水的化学需氧量（COD）、五日生化需氧量（BOD5）、氨氮和总磷的去除效率分别为76 - 87%、82 - 92%、75 - 85%和77 - 91%，处理后出水的COD、BOD5、氨氮和总磷的平均浓度分别低于60、20、25和2.0毫克·升⁻¹。种植和未种植柱体的比较表明，种植风车草可使氨氮、总氮和总磷的去除率分别提高2 - 3%、4 - 6%和10 - 14%。
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