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在自制的小型试验装置中 ,通过高温厌氧消化处理炼油厂浮选渣 ,温度控制在 55℃下 ,经过连续培养驯化及 1 80d以上的运行考察 ,结果表明 ,混合污泥经驯化后其外观、嗅觉、pH、比阻及厌氧菌数皆发生较大的变化 ,新鲜浮选渣已由灰色、油味变为黑色、臭味 ,pH与比阻降低 ,厌氧菌数增多 ;通过连续运行中的厌氧菌数、出料的MLVSS、COD及过滤比阻的详细数据分析 ,得出污泥在适应冲击后 ,在污泥停留时间为 1 0d的条件下 ,厌氧过程能较好地进行 ;厌氧菌生长良好 ,能较快地适应进料的冲击 ;经高温厌氧消化后的浮选渣 ,厌氧菌数稳定在 1 .0× 1 0 8～ 9.0× 1 0 8,COD去除率达 3 2 % ;出料液中的COD主要为低沸点的有机物 ;污泥比阻大幅降低 ,过滤脱水性能明显提高 ,并已由不易脱水物质转变为易脱水物质。
In a self-made small-scale pilot plant, the flotation residue was treated by high-temperature anaerobic digestion and the temperature was controlled at 55 ℃. After continuous cultivation and domestication and operation over 180 days, the results showed that the appearance of mixed sludge after acclimation , Smell, pH, specific resistance and number of anaerobic bacteria all changed greatly. Fresh flotation residue changed from gray and oil to black, odor, pH and specific resistance decreased, and the number of anaerobic bacteria increased. The number of anaerobic bacteria in operation, the MLVSS, COD and filtration specific resistance of the discharged material were analyzed. The results showed that the anaerobic process was better under the condition of sludge residence time of 10d The anaerobic bacteria grew well and could adapt to the impact of feed quickly. The number of anaerobic bacteria stabilized by the anaerobic digestion flotation slag was 1.0 × 108 ~ 9.0 × 108, COD removal rate of 32%; discharge of COD mainly low boiling point organic matter; sludge specific resistance significantly reduced filtration dewatering performance was significantly improved, and has not easily dehydrated material into easily dehydrated material.