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In contrast, the leachates COD and ammoniac nitrogen of anaerobic landfill need more than one decade and even several decades to decrease to the same standard.
相比之下,厌氧填埋场渗滤液中的类似污染物在自然条件下需要十几年甚至几十年的时间方能达到相同标准。
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The simulative results show that the leachates COD of semi-aerobic landfills decrease to National Discharge Standard Class I (100mg/L) in 2-3 years, and ammoniac nitrogen reduce to the standard (15 mg/L) in one year or so.
在室内模拟的条件下显示,准好氧填埋场垃圾渗滤液的COD自然衰减至国家一级排放标准(100mg/L)仅需2~3年,而氨氮只需1年左右即可达到相应的国家一级排放标准(15 mg/L)。
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NH4(superscript +)-N in landfill leachates was enriched in catholyte by electrodialysis, then removed by chemical precipitation.
垃圾渗滤液中的氨氮通过电渗析技术富集到阴极液中,随后用化学沉淀法加以去除。
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The results show that all aluminum anodizing sludges were slightly neutral to acidic and mainly consist of more than 50% Al2O3; the similar total contents of Cu, Pb, Zn, Ni, Cd, and Cr in the 7 samples were found, namely, the concentrations of Pb, Cd were relatively lower, but that of Cu, Zn, Ni, and Cr were higher; the leaching tests indicate that all the samples were classed as nonhazardous wastes; but each of metals in the sample shows very different leaching behavior, possibly depending on their total contents and the final pH of leachates.
结果表明,铝型材污泥属于中性偏酸性物质,主要由Al2O3组成,含量在50%以上。各试样中Cu、Pb、Zn、Ni、Cd及Cr的总含量的分布趋势基本是一致的,其中Pb、Cd的含量较低,Cu、Zn、Ni及 Cr的含量较高。浸出毒性试验表明铝型材污泥属于非危险废物,但污泥中各重金属的浸出特性又各自不同,可能主要与它们在试样中的总含量和浸出液的最终pH值有关。
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More than 100 studies have explored the bioactivity of bisphenol A leachates from polycarbonates.
超过100 项研究探索了聚碳酸酯纤维的bisphenol A leachates 在生态的反应。
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Garbage leachates:垃圾渗滤液
碎片回收:Garbage collection | 垃圾渗滤液:Garbage leachates | 垃圾回收:garbage collect
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landfill leachates:垃圾渗滤液
垃圾渗沥液:landfill leachate | 垃圾渗滤液:landfill leachates | 填埋结构:landfill structure