4種濕地植物對(duì)人工濕地凈化生活污水的影響比較
[Abstract]:The effects of different types of constructed wetlands on the treatment of domestic sewage are affected by many factors, among which the selection of different plant types may lead to great differences in the purification efficiency of CODN TN and TP in constructed wetlands. The effects of four wetland plants (Acorus calamus, Typha cattails, Dioscorea chinensis and Allium nigra) on the treatment of synthetic domestic sewage and the seasonal change of the removal rate of main pollutants (CODN, TP) in the constructed wetland with horizontal subsurface flow, vertical upward flow and downflow were studied. By comparing the removal effects of main pollutants from different plant types in different wetland types, the start-up conditions for achieving the best sewage purification effect were analyzed. The results showed that the removal efficiency of organic pollutants was the best in the vertical downflow wetland, the removal rate was 85.55, the removal rate of TN was the best in the vertical upstream wetland, the removal rate was 57.52, and the TP removal efficiency was the best in the vertical upstream wetland. The removal rate can reach 84.28%.
【作者單位】: 污染控制與資源化研究國(guó)家重點(diǎn)實(shí)驗(yàn)室 南京大學(xué)環(huán)境學(xué)院;江蘇省農(nóng)村環(huán)境保護(hù)與生態(tài)修復(fù)工程中心;江蘇省工程咨詢中心;
【基金】:國(guó)家水體污染控制與治理科技重大專項(xiàng)(2012ZX07204-001)
【分類號(hào)】:X799.3
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