半饱和褐煤活性焦预吸附—4级固定化生物滤池降解—褐煤活性焦吸附组合工艺处理超稠油废水

摘要

采用半饱和褐煤活性焦(HSLAC)预吸附-4级固定化生物滤池(Ⅰ-BFs)降解—褐煤活性焦(LAC)吸附组合工艺处理超稠油废水.实验结果表明:组合工艺能达到出水COD≤50 mg/L的排放标准;4级Ⅰ-BFs可完全去除有机酸、酯、呋喃类有机物,部分去除酚类物质,不能去除酰胺类物质,可将大分子有机物降解为小分子烷烃;Ⅰ-BFs对疏水性有机碳和中性有机物有较高的去除率和去除量,较难去除腐殖质和腐殖质降解产物;4级Ⅰ-BFs反应器内优势菌为类杆菌(Bacteroides sp.)、假单胞菌(Pseudomonas sp.)、异养反硝化菌(Thermomonas sp.)、鞘脂单胞菌科(Sphingomonadaceae sp.)、鞘氨醇单胞菌(Sphingomonas sp.)和根瘤菌(Rhizobium sp.).%The super heavy oil wastewater (SHOW)was treated by combination process of half saturated lignite activated coke (HSLAC)pre-adsorption-4-stageimmobilizedbiofilters (Ⅰ-BFs)degradation-lignite activated coke (LAC)adsorption.The experimental results indicated that:The effluent by the combination process met the discharge standard (COD ≤ 50 mg/L);By the 4-stage Ⅰ-BFs process,organic acids,esters and furans were completely removed,phenolics were partly removed,but amides were not removed,the macromolecular organic compounds were degraded into small molecular alkanes;The removal rate and removal amount of hydrophobic organic carbon and neutral organics were high by the Ⅰ-BFs,but humus and building blocks were hardly removed;Thedominant bacteria in the 4-stage Ⅰ-BFs were Bacteroides sp.,Pseudomonas sp.,Thermomonas sp.,Sphingomonadaceae sp.,Sphingomonas sp.and Rhizobium sp..