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

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(Thermomonassp.)、鞘脂单胞菌科(Sphingomonadaceae sp.)、鞘氨醇单胞菌(Sphingomonas sp.)和根瘤菌(Rhizobium sp.)。

Treatment of super heavy oil wastewater by combination process of half saturated lignite activated coke pre-adsorption-4-stage immobilized biofilter degradation-lignite activated coke adsorption

The super heavy oil wastewater （SHOW）was treated by combination process of half saturated lignite activated coke （HSLAC）pre-adsorption–4-stage immobilized biofilters （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..