CAJ | 학술논문

采用自主设计的悬浮载体生物膜/颗粒污泥耦合装置，利用硝化菌载体生物膜和反硝化聚磷菌颗粒污泥，研究水力停留时间对生物膜/颗粒污泥耦合工艺脱氮除磷的影响，得出最佳工艺参数。试验考查水力停留时间分别为6 h、7 h、8.5 h和10.5 h，结果表明，当水力停留时间为8.5 h时，系统的COD去除率为91.26%，氨氮和总氮的去除率分别为80.68%和70.58%，厌氧释磷速率也较稳定，为0.47 mg P·(g SS)-1·h-1，厌氧释磷速率最高，其碳源利用率最大，反硝化除磷效率最稳定，PO43--P去除率为76.50%，反硝化除磷效率为1.04 mg P·(mg NO-3-N)-1，所以当水力停留时间为8.5 h时，系统具有较高的脱氮除磷效率。当水力停留时间过短时，氮磷的去除不完全，过长时，系统不稳定，系统的最优水力停留时间为8.5 h。
채용자주설계적현부재체생물막/과립오니우합장치，이용초화균재체생물막화반초화취린균과립오니，연구수력정류시간대생물막/과립오니우합공예탈담제린적영향，득출최가공예삼수。시험고사수력정류시간분별위6 h、7 h、8.5 h화10.5 h，결과표명，당수력정류시간위8.5 h시，계통적COD거제솔위91.26%，안담화총담적거제솔분별위80.68%화70.58%，염양석린속솔야교은정，위0.47 mg P·(g SS)-1·h-1，염양석린속솔최고，기탄원이용솔최대，반초화제린효솔최은정，PO43--P거제솔위76.50%，반초화제린효솔위1.04 mg P·(mg NO-3-N)-1，소이당수력정류시간위8.5 h시，계통구유교고적탈담제린효솔。당수력정류시간과단시，담린적거제불완전，과장시，계통불은정，계통적최우수력정류시간위8.5 h。
In home-designed coupling unit consisting of suspended carrier biofilm and granular sludge, biofilm supported nitrifying bacteria and denitrifying phosphorus granular sludge were used for investigating the effect of the hydraulic retention time (HRT) on nitrogen and phosphorus removal to arrive at optimizing process parameters. In the experiment, HRT was set at 6 h, 7 h, 8.5 h and 10.5 h. The results showed that when HRT was 8.5 h, the removal rates of COD, ammonia nitrogen and total nitrogen were 91.26%, 80.68%and 70.58%respectively. The release rate of phosphorus was 0.47 mg P·(g SS)-1·h-1, anaerobic phosphorus release and carbon source utilization were both at the highest rate, PO4 3--P removal rate 76.50%, denitrifying phosphorus removal efficiency 1.04 mg P·(mg NO-3-N)-1. At the hydraulic retention time 8.5 h, the system had higher nitrogen and phosphorus removal efficiency. When the HRT was too short, nitrogen and phosphorus removal was incomplete, If too long, the system was unstable. Therefore, the system’s optimal hydraulic retention time was 8.5 h.