Combustion residuals and the resulting leachate from storage sites represent a large volume of wastewater in the United States (U.S.) that has not been quantified. This work estimates the constituents present, volume of wastewater, and costs of treatment for both combustion residual landfill leachate and the leachate from surface impoundment closures. Combustion residual landfill leachate produced from contact with bituminous coal combustion byproducts is generally predicted to be higher in lithium and manganese, whereas landfill leachate produced from contact with subbituminous coal combustion byproducts is generally predicted to be higher in mercury and vanadium. The annual volume of a single landfill with combustion residual leachate can reach more than 800,000 cubic meters. This leachate represents an annual volume of 26.8–42.8 million cubic meters nationally. Closing surface impoundments can yield between 830 and 1040 cubic meters of leachate nationally for a three-year closure period. Costs as low as $1.5/m³ or as high as $95/m³ are observed. Treatment trains will need to remove 72% of total suspended solids (TSS), 87% of arsenic, and 64% of mercury from landfill leachate. When applied to impoundments, these treatment trains would need to remove 97% of arsenic.

燃烧残留物和储存地点产生的渗滤液代表了美国大量尚未量化的废水。这项工作估算了燃烧残余垃圾填埋场渗滤液和地表蓄水池渗滤液的存在成分、废水量和处理成本。与沥青接触产生的燃烧残余垃圾渗滤液通常预计煤炭燃烧副产物的锂和锰含量较高，而与次烟煤燃烧副产物接触产生的垃圾填埋场渗滤液通常预计汞和钒含量较高。单个垃圾填埋场燃烧残余渗滤液年处理量可达80万立方米以上。全国渗滤液年产生量为 26.8-4280 万立方米。关闭地表蓄水池在三年关闭期内可产生 830 至 1040 立方米的渗滤液。成本低至 1.5 美元/m ³或高达 95 美元/m ³被观察到。处理系统需要从垃圾填埋场渗滤液中去除 72% 的总悬浮固体 (TSS)、87% 的砷和 64% 的汞。当应用于蓄水池时，这些处理系统需要去除 97% 的砷。