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目的研究不同的填料对厌氧氨氧化装置启动的影响,选出最有利于厌氧氨氧化反应启动的填料,解决厌氧氨氧化装置启动时间过长的问题.方法取三套生物反应器厌氧氨氧化装置,分别填入弹性填料、火山岩、陶粒3种不同填料,均接种沈阳某污水厂二沉池污泥,自配模拟废水,装置水体温度为(35±1)℃,调节pH值为7.8~8.2.结果经150 d的运行调试,三套厌氧氨氧化装置均启动成功.其中弹性填料装置经过149 d的运行,NH_4~+-N与NO_2~--N的去除率均达到91%和90%;火山岩填料装置经129 d的运行,NH_4~+-N与NO_2~--N的去除率达到96%和97%;陶粒填料装置经过135 d的运行,NH_4~+-N与NO_2~--N的去除率达到93%和94%.结论火山岩和陶粒两种填料与弹性填料相比,具有装置启动时间较短,去除率相对高等优势.
OBJECTIVE To study the effects of different fillers on the start-up of anaerobic ammonium oxidation unit, select the most favorable packing for anaerobic ammonium oxidation and solve the problem of too long start-up time for anaerobic ammonia oxidation unit.Methods Three sets of bioreactor Oxygen and ammoxidation devices were filled with elastic packing, volcanic rock and ceramsite respectively. All of them were inoculated with the second sedimentation tank sludge of a sewage treatment plant in Shenyang and self-provided with simulated wastewater. The temperature of the water body was (35 ± 1) Value of 7.8 to 8.2 Results After 150 days of operation and commissioning, three sets of anaerobic ammonia oxidation units were started successfully, of which 149 days after the elastic packing unit operation, the NH_4 ~ + -N and NO_2 ~ -N removal rate Reaching 91% and 90% respectively. After 129 days of operation, the removal rates of NH_4 ~ + -N and NO_2 ~ -N were 96% and 97%, respectively. After 130 days of operation, -N and NO_2 ~ - N was 93% and 94%, respectively.Conclusions Compared with elastic filler, the two kinds of fillers of volcanic rock and ceramsite have the advantages of shorter start-up time and relatively high removal rate.