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以养猪废水为处理对象,对比研究了两种潜流湿地的除磷效能。结果表明,当进水负荷为0.02 m~3/(m~2·d)时,水平潜流湿地(HSSF)和垂直潜流湿地(VSSF)均表现出较高且稳定的除磷能力,对TP的平均去除率分别为88.41%和95.71%;红壤、海蛎壳和废砖块等填料的吸附沉淀作用是湿地系统除磷的主要途径,植物和微生物所起作用不大,但均可通过影响湿地的其他条件而间接影响除磷效率;被截留的磷素在两湿地填料层中具有不同的空间分布特征,填料层中无机磷的分布特征与全磷一致且含量较高,进一步证明了填料的吸附沉淀作用是湿地除磷的主要途径;与水平潜流湿地相比,垂直潜流湿地因其独特的结构设计,更有利于对养猪废水中磷素的去除。
Pig waste water was taken as the treatment target, and the phosphorus removal efficiencies of two underflow wetlands were comparatively studied. The results showed that both HSSF and VSSF exhibited high and stable phosphorus removal efficiencies at inflow loads of 0.02 m 3 / (m 2 · d) The average removal rates were 88.41% and 95.71%, respectively. Adsorption and sedimentation of red soil, sea oyster shell and waste brick were the main ways to remove phosphorus in wetland systems. Plants and microorganisms did not play a role, Of the other conditions indirectly affect the phosphorus removal efficiency; retained phosphorus in the two wetland packing layer has a different spatial distribution characteristics of the packing layer of inorganic phosphorus distribution characteristics consistent with the high phosphorus content, further evidence of filler Adsorption and sedimentation are the main ways to remove phosphorus in wetlands. Compared with horizontal subsurface flow wetlands, vertical subsurface flow wetlands are more conducive to the removal of phosphorus from pigs’ wastewater due to their unique structural design.