Department of Civil Engineering, Karadeniz Technical University, Trabzon 61080, Turkey.
Int J Environ Res Public Health. 2012 May;9(5):1581-92. doi: 10.3390/ijerph9051581. Epub 2012 May 3.
The potential long term environmental impacts of a landfill on groundwater quality depend on its liner material properties. In case synthetic liner materials are damaged during the construction or operation, many of the original chemical and biological constituents are removed by filtration and the adsorptive action of natural liner materials such as natural zeolite, perlite and bentonite minerals. Before leachate treatment, reduction of these constituents is important not only to leachate percolation, but also treatment cost and efficiency. In this study, the pollutant removal efficiency from the leachate was investigated for natural natural zeolite, expanded perlite and bentonite. Experimental studies was performed in boxes made of glass and with 1:10 sloping. Leachate quantity was determined and pH, electrical conductivity (EC), nitrate (NO(3)-N), ammonium-nitrogen (NH(4)-N), phosphate (PO(4)), chemical oxygen demand (COD) and organic matter in leachate samples were measured and the measurement was compared with control process (System 4). The results showed that natural zeolite was effective in removing NO(3), NH(4), PO(4), COD and organic matter with removal efficiencies of 91.20, 95.6, 95.5, 83.4 and 87.8%, respectively. Expanded perlite has high efficiency removing of NO(3), PO(4) and COD 83.2, 91.0 and 62.5%, respectively, but it was unsuccessful in reducing NH(4) (1.5%).
垃圾填埋场对地下水水质的潜在长期环境影响取决于其衬垫材料的特性。如果合成衬垫材料在施工或运行过程中受到损坏，许多原始的化学和生物成分将通过过滤和天然衬垫材料（如天然沸石、珍珠岩和膨润土矿物）的吸附作用而被去除。在进行渗滤液处理之前，减少这些成分不仅对于渗滤液的渗透很重要，而且对于处理成本和效率也很重要。在这项研究中，研究了天然沸石、膨胀珍珠岩和膨润土从渗滤液中去除污染物的效率。实验在玻璃制成的盒子中进行，盒子的倾斜度为 1:10。确定了渗滤液的数量，并测量了渗滤液样品中的 pH 值、电导率 (EC)、硝酸盐 (NO3-N)、铵氮 (NH4-N)、磷酸盐 (PO4)、化学需氧量 (COD) 和有机物质，并将测量结果与对照过程（系统 4）进行了比较。结果表明，天然沸石对去除 NO3、NH4、PO4、COD 和有机物具有很高的效率，去除率分别为 91.20%、95.6%、95.5%、83.4%和 87.8%。膨胀珍珠岩对去除 NO3、PO4 和 COD 的效率很高，分别为 83.2%、91.0%和 62.5%，但对 NH4 的去除效果不佳（1.5%）。
