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针对抗生素类制药工业废水难处理的特点,将某高效复合微生物菌群负载在以中孔和大孔为主的污泥炭颗粒的表面和孔隙内部,制备得到生物改性污泥炭。采用装填生物改性污泥炭的新型填料曝气生物滤池及向下流、中下部曝气的运行方式对以抗生素类制药废水为主的混合工业废水絮凝沉淀池出水中的主要污染物进行深度处理。结果表明,污泥炭载体在水中发挥2种作用,即吸附功能和载体功能,污泥炭表面及内部孔隙结构非常发达,为不同种类和功能的高效微生物菌群的构建和负载提供了良好的载体;采用粒径为8~10 mm的生物改性污泥炭、HRT 100 min及气水比3∶1,进水COD浓度96~123 mg/L、NH3-N浓度8.8~17.4 mg/L、TP浓度0.390~0.623 mg/L、pH 6~9,新型填料曝气生物滤池对混合工业废水中的COD、NH3-N和TP的平均去除率分别为47.2%、49.2%和35.6%,相比污水厂常规陶料填料生物滤池分别提高了27.9、21.6和12.8个百分点,该工艺处理效果稳定,运营管理简单,为极难生物降解的抗生素类废水为主的混合工业废水的深度处理提供了新思路。
In view of the difficult characteristic of antibiotic pharmaceutical industrial waste water, a high-efficient composite microbial flora is loaded on the surface and pores of carbonaceous sludge particles mainly containing mesopores and macropores, and biological modified sludge charcoal is prepared. Adopting the new type of stuffing aerated biological filter filled with biological modified sludge charcoal and the operating mode of downward aeration and middle and lower aeration, the main pollutants in the effluent of flocculation sedimentation tank are mainly mixed with antibiotic-based pharmaceutical wastewater deal with. The results show that sludge carbon carrier plays two roles in water, that is, adsorption and carrier functions. The surface and internal pore structure of sludge carbon is well developed, which provides a good method for the construction and loading of efficient microorganisms with different kinds and functions The biotransformation sludge sludge with particle size of 8-10 mm was used. HRT 100 min and gas-water ratio of 3:1 were used. The influent COD concentration was 96-123 mg / L and the NH3-N concentration was 8.8-17.4 mg / L , The average removal rates of COD, NH3-N and TP in the mixed industrial wastewater were 47.2%, 49.2% and 35.6%, respectively, with TP concentrations of 0.390-0.623 mg / L and pH values of 6-9. Compared with the conventional ceramic filter biofilter, the biofilters increased by 27.9, 21.6 and 12.8 percentage points respectively. The treatment effect is stable, operation and management is simple, and the advanced treatment of mixed industrial wastewaters, mainly biodegradable antibiotic-based wastewater Provide a new idea.