流离球内填料配比对SBBR污染物去除影响的研究

Study on the Effect of Packing Ratio in the Flow-Separation Ball on the Removal of Pollutants in SBBR

为了探究流离球内部组合填料配比对污水中污染物去除的影响,以鲍尔环与海绵作为内部填料,组成7种不同填料配比的流离球,构建SBBR反应器进行实验。鲍尔环与海绵填料体积比分别为:0∶189、4∶27、11∶27、21∶27、37∶27、71∶27、171∶27。实验结果表明,各填料比下COD处理效果较好,改变组合填料配比主要影响了传质效果、生物膜量、厌氧空间大小进而影响了系统的脱氮性能。填料比为37∶27时氮的去除效果最好,NH_(4)^(+)-N、TN的平均去除率分别为56.4%和55.3%;此时,系统生物量适中,生物膜絮凝性好。

In order to investigate the effect of the internal combination packing ratio of flow-separation balls on the removal of pollutants in wastewater,seven kinds of flow-separation balls with different packing ratios were constructed with Pall ring and sponge as internal packing to construct SBBR reactor for experiments.The volume ratios of the Pall ring and sponge filler were 0:189,4:27,11:27,21:27,37:27,71:27 and 171:27,respectively.The experimental results showed that the COD treatment effect was better with each packing ratio,and changing the combined packing ratio mainly affected the mass transfer effect,biofilm biomass,anaerobic space size and the nitrogen removal performance of the system.The best nitrogen removal effect was achieved at the packing ratio of 37:27,and the average removal rates of NH_(4)^(+)-N and TN were 56.4%and 55.3%respectively;at this time,the system biomass was moderate and the biofilm flocculation was good.