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首页> 外文学位 >The effect of landfill leachate recirculation on leachate quality, vegetation vigour, and clay hydraulic conductivity (Ontario).
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The effect of landfill leachate recirculation on leachate quality, vegetation vigour, and clay hydraulic conductivity (Ontario).

机译：垃圾渗滤液再循环对渗滤液质量，植被活力和粘土导水率的影响（安大略省）。

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摘要

Continuous recirculation of two municipal solid waste landfill leachates from Ontario, Canada, through a vegetated clay surface cover was field tested in 39 bottom-draining hysimeters over two field seasons. The degree of leachate constituent attenuation, the reduction in leachate volume, the vigour of the vegetative cover, and the influence of leachate on clay hydraulic conductivity were examined. Vegetation tested included reed canarygrass (Phalaris arundinacea L.), meadow foxtail (Alopecurus pratensis L.), weeping willow (Salix babylonica L.) and hybrid poplar (Populus sp. nigra x maximowiczii). The clay soil significantly buffered leachate pH, lowered the EC 76% to 3.22 mS cm{dollar}sp{lcub}-1{rcub}{dollar}, lowered the COD:Cl ratio 90% to 1.08, and attenuated Ca, Fe, Mn, and Zn. Anaerobic decomposition within the holding tanks lowered volatile organic concentrations by 80-100%, which was as effective as application to the clay soil. Leachate stimulated height growth 36 to 141% in the four species tested relative to the growth in the water-irrigated plants. (Abstract shortened by UMI.)
机译：在两个田间季节中，通过39个底部排水湿度计对来自加拿大安大略省的两个市政固体垃圾填埋场渗滤液通过植被覆盖的粘土表面进行了连续再循环。研究了渗滤液组成衰减的程度，渗滤液体积的减少，营养覆盖物的活力以及渗滤液对粘土水力传导率的影响。测试的植被包括芦苇金丝雀（Phalaris arundinacea L.），草甸牛尾（Alopecurus pratensis L.），垂柳（Salix babylonica L.）和杂种杨（Populus sp。nigra x maximowiczii）。粘土显着缓冲了渗滤液的pH，使EC降低76％至3.22 mS cm {dol} sp {lcub} -1 {rcub} {dol}，COD：Cl比率降低90％至1.08，并使Ca，Fe，锰和锌。储罐内的厌氧分解使挥发性有机物浓度降低了80-100％，与施用在粘土上一样有效。相对于水灌溉植物的生长，渗滤液刺激了所测试的四个物种的高度增长36％至141％。 （摘要由UMI缩短。）

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