间歇曝气SBR与传统SBR处理养猪沼液的比较研究

发布时间：2019-02-17 08:18

【摘要】：采用间歇曝气序批式反应器(intermittently aerated sequencing batch reactor,IASBR)和传统序批式反应器(SBR)处理养猪沼液,研究进水中化学需氧量(COD)与总氮(TN)比值(COD/TN)和运行负荷对污染物去除效果的影响.结果表明,在进水COD/TN约为2.2、氨氮负荷为(0.12±0.04)kg·(m3·d)-1时,IASBR中的氨氮、TN和有机物去除率分别为97.2%±4.4%、81.5%±7.5%、88.5%±2.4%,优于SBR的78.3%±19.6%、79.8%±4.9%、86.6%±3.2%;当氨氮负荷提高至(0.18±0.02)kg·(m3·d)-1时,IASBR中的氨氮、TN和有机物去除率略有降低,分别为92.4%±7.3%、77.5%±5.3%、86.4%±2.2%,但仍然优于SBR中的相应去除率78.1%±15.4%、61.8%±11.2%、81.8%±5.6%.在氨氮负荷为(0.20±0.01)kg·(m3·d)-1下,提高进水COD/TN至约3.0,则IASBR和SBR的污染物去除能力较进水COD/TN为2.2时有显著提升,IASBR中氨氮、TN和有机物去除率分别达到99.6%±0.2%、91.5%±2.9%和92.0%±0.9%,仍然高于SBR的90.2%±1.4%、83.0%±1.9%、90.2%±0.5%.总体而言,相较SBR,IASBR对TN和氨氮的去除更高效、耐冲击负荷能力更强,因此对养猪沼液等低碳氮比的废水更为适用.
[Abstract]:The pig biogas liquid was treated by (intermittently aerated sequencing batch reactor,IASBR (intermittent aeration sequencing batch reactor) and (SBR) (traditional sequencing batch reactor). The effects of (COD) / (TN) ratio (COD/TN) and operating load on the removal of pollutants in influent were studied. The results showed that when the influent COD/TN was about 2.2 and the ammonia nitrogen load was (0.12 卤0.04) kg (m3 d) -1, the removal rates of ammonia nitrogen, TN and organic matter in IASBR were 97.2% 卤4.4% 卤8.5% 卤7.5%, respectively. 88. 5% 卤2. 4%, superior to 78.3% 卤19. 6% of SBR, 79.8% 卤4. 9% and 86.6% 卤3. 2%. When the ammonia-nitrogen load was increased to (0.18 卤0.02) kg (m3 d) -1, the removal rates of ammonia nitrogen, TN and organic matter in IASBR decreased slightly, which were 92.4% 卤7.3% 卤77.5% 卤5.3% 卤86.4% 卤2.2, respectively. But it is still superior to the corresponding removal rate in SBR by 78.1% 卤15.4% 卤61.8% 卤11.2% and 81.8% 卤5.6%. When the ammonia nitrogen load was (0.20 卤0.01) kg (m3 / d) -1 and the influent COD/TN was increased to about 3.0, the pollutant removal capacity of IASBR and SBR was significantly higher than that of the influent COD/TN of 2.2, and the ammonia nitrogen in IASBR was significantly higher than that in the influent COD/TN. The removal rates of TN and organic matter reached 99.6% 卤0.2% 卤2.9% and 92.0% 卤0.9%, respectively, which were still higher than those of SBR (90.2% 卤1.4) and 83.0% 卤1.9% 卤0.5%, respectively. In general, compared with SBR,IASBR, the removal of TN and ammonia nitrogen is more efficient and more resistant to impact loading, so it is more suitable for wastewater with low C / N ratio such as pig biogas liquid.
【作者单位】：上海师范大学生命与环境科学学院;浙江清华长三角研究院生态环境研究所浙江省水质科学与技术重点实验室;三菱丽阳水处理研发中心;清华大学环境学院;
【基金】：浙江省重大科技专项(2014C03022) MRC合作项目嘉兴市科技计划项目(2014AY21014)
【分类号】：X713

【相似文献】