不同填料的厌氧氨氧化污泥挂膜性能比较

发布时间：2018-04-20 13:52

本文选题：生物膜 + 悬浮塑料填料　；参考：《化工学报》2016年10期

【摘要】：向厌氧氨氧化反应器内投加填料形成生物膜有利于污泥的持留,然而有关填料本身的不同特点对厌氧氨氧化生物膜生长影响的报道较少。将两种不同密度的悬浮塑料填料和两种不同密度的海绵填料置于同一反应器内,进行厌氧氨氧化污泥的挂膜,结果发现海绵填料的单个填料氨氮平均去除速率和亚硝态氮平均去除速率整体高于悬浮塑料填料,所挂污泥的EPS含量整体也高于悬浮塑料填料,并且挂膜速度也相对较快。在挂膜30 d后,单个小密度海绵填料便可检测出氨氮和亚硝态氮去除速率,且2 4(NO-N)/(NH-N)????值接近1.32。在挂膜105 d后,单个小密度海绵填料的氨氮平均去除速率为0.123 mg·L?1·h?1,亚硝态氮平均去除速率为0.160 mg·L?1·h?1,2 4(NO-N)/(NH-N)????值为1.30,最为接近理论值1.32,厌氧氨氧化活性为最佳,并且其所挂污泥的厌氧氨氧化菌丰度值在4种填料中最大,为1.73×1010 copies·(g dry sludge)?1,总体来看小密度海绵填料的挂膜效果更好。
[Abstract]:Biofilm formation by adding fillers to anaerobic ammoxidation reactors is beneficial to sludge retention. However, there are few reports on the effects of different characteristics of fillers on the growth of anaerobic ammoxidation biofilms. Two kinds of suspended plastic fillers with different density and two kinds of sponge fillers with different densities were placed in the same reactor. The results showed that the average removal rate of ammonia nitrogen and nitrite nitrogen of sponge packing was higher than that of suspended plastic filler, the EPS content of suspended sludge was also higher than that of suspended plastic filler, and the rate of membrane formation was relatively fast. The removal rate of ammonia nitrogen and nitrite nitrogen could be detected by a single small density sponge packing after 30 days of suspension of film, and the removal rate of nitrite nitrogen and nitrite nitrogen could be detected by 24% NO-N / N / N / N ~ (+) -N ~ (H-N) / N ~ (2 +). The value is close to 1.32. The average removal rate of ammonia nitrogen and nitrite nitrogen was 0.123 mg / L and 0.160 mg / L respectively, and the average removal rate of nitrite nitrogen was 0.160 mg / L ~ (-1) h ~ (-1) ~ (-1) no ~ (-N) ~ + / N ~ (2 +) N ~ (+) ~ (2 +) N ~ (2 +) / N ~ (2 +) in a single small density sponge packing for 105d. The anaerobic ammonia oxidation activity was the best, and the anaerobic ammoxidation activity of the sludge was the highest among the four fillers, which was 1.73 脳 1010 copies / g dry sludge.As a whole, the membrane hanging effect of the small density sponge packing was better.
【作者单位】：北京工业大学北京市水质科学与水环境恢复工程重点实验室;哈尔滨工业大学城市水资源与水环境国家重点实验室;
【基金】：国家自然科学基金项目(51478013) 北京市教委资助项目~~
【分类号】：X703.1

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