嗜盐菌对SBR处理高盐废水中氨氮及COD的影响
|
摘要
向活性污泥中加入从实验室剩余污泥中分离的菌种,利用2个SBR装置分别对加入了菌种的混合液和普通活性污泥进行盐度梯度培养,探究不同盐度条件下,实验室剩余污泥中的菌种对活性污泥处理高盐废水中氨氮及COD的影响。结果表明:当进水氨氮浓度为30～33 mg/L、COD浓度为800～830 mg/L时,该菌种作用的适宜盐度为19～25 g/L,此时2组(S和D组)氨氮去除率差值在20%以上,实验分离出的菌种能够一定程度上强化活性污泥对废水中氨氮的去除,短时间内可以作为调节试剂使用。实验所得的最佳盐度为25 g/L,此时两组氨氮去除率差值为30.18%,该菌种内多含弱嗜盐菌。整个实验过程中,S组氨氮去除率在60%左右,COD去除率在90%以上;D组氨氮去除率在40%左右,COD去除率在85%以上。2组的SVI和SV随着盐度的增大而减小,盐度能够抑制污泥膨胀,增强污泥的沉降性。菌种加入后,混合液的MLSS值增长速度增大,污泥量增长更快。
The strains isolated from the excess sludge in the laboratory were added to the activated sludge. The two SBR devices were used to carry out the salinity gradient culture of the mixture and the common activated sludge, and explore the different salinity conditions. The effect of strains in laboratory excess sludge on ammonia nitrogen and COD in activated sludge treated high-salt wastewater. The results showed that when the influent ammonia nitrogen concentration was 30～33 mg/L and the COD concentration was 800～830 mg/L, the suitable salinity of the strain was 19～25 g/L. At this time, the two groups(S and D groups) The difference of ammonia nitrogen removal rate is more than 20%. The strains isolated from the experiment can enhance the removal of ammonia nitrogen in the wastewater by activated sludge to a certain extent, and can be used as a regulating reagent in a short time. The optimum salinity obtained by the experiment was 25 g/L. At this time, the difference of ammonia nitrogen removal rate between the two groups was 30.18%, and the strain contained many weak halophilic bacteria. During the whole experiment, the removal rate of ammonia nitrogen in S group was about 60%, and the removal rate of COD was above 90%. The removal rate of ammonia nitrogen in group D was about 40%, and the removal rate of COD was above 85%. The SVI and SV of the two groups decreased with the increase of salinity, and the salinity could inhibit the sludge expansion and enhance the sedimentation of the sludge. After the bacteria are added, the MLSS value of the mixture increases and the sludge volume increases faster.
The strains isolated from the excess sludge in the laboratory were added to the activated sludge. The two SBR devices were used to carry out the salinity gradient culture of the mixture and the common activated sludge, and explore the different salinity conditions. The effect of strains in laboratory excess sludge on ammonia nitrogen and COD in activated sludge treated high-salt wastewater. The results showed that when the influent ammonia nitrogen concentration was 30～33 mg/L and the COD concentration was 800～830 mg/L, the suitable salinity of the strain was 19～25 g/L. At this time, the two groups(S and D groups) The difference of ammonia nitrogen removal rate is more than 20%. The strains isolated from the experiment can enhance the removal of ammonia nitrogen in the wastewater by activated sludge to a certain extent, and can be used as a regulating reagent in a short time. The optimum salinity obtained by the experiment was 25 g/L. At this time, the difference of ammonia nitrogen removal rate between the two groups was 30.18%, and the strain contained many weak halophilic bacteria. During the whole experiment, the removal rate of ammonia nitrogen in S group was about 60%, and the removal rate of COD was above 90%. The removal rate of ammonia nitrogen in group D was about 40%, and the removal rate of COD was above 85%. The SVI and SV of the two groups decreased with the increase of salinity, and the salinity could inhibit the sludge expansion and enhance the sedimentation of the sludge. After the bacteria are added, the MLSS value of the mixture increases and the sludge volume increases faster.
引文
[1]林玉科,张洁,吴志国,等.MBR污泥驯化和在高盐废水处理中的应用[J].膜科学与技术,2017,37(4):86-92.Lin Yuke,Zhang Jie,Wu Zhiguo,et al.MBR sludge acclimation and application in high-salt wastewater treatment[J].Membrane Science and Technology,2017,37(4):86-92.
[2]李玲玲.高盐度废水生物处理特性研究[D].青岛：中国海洋大学,2006.Li Lingling.Study on the Biological Treatment of High-salinity Wastewater[D].Qingdao:China Ocean University,2006.
[3]周贵忠,许硕,姚倩,等.不同盐度下活性污泥中微生物群落变化规律及其处理模拟染料废水[J].环境科学,2017,38(7):2972-2977.Zhou Guizhong,Xu Shuo,Yao Qian,et al.Variation of microbial community in activated sludge under different salinity and its treatment of simulated dye wastewater[J].Environmental Science,2017,38(7):2972-2977.
[4]宁卓,张波.嗜盐菌的研究进展及应用[J].现代盐化工2007(1):31-32.Ning Zhuo,Zhang Bo.Research progress and application of halophilic bacteria[J].Modern Salt Chemical Industry,2007(1):31-32.
[5]赵胜楠,赵天楚,高会杰.硝化菌耐盐驯化及处理高含盐氨氮废水实验研究[J].水处理技术,2017(3):56-58.Zhao Shengnan,Zhao Tianchu,Gao Huijie.Experimental study on salt tolerance domestication of nitrifying bacteria and treatment of high salt ammonia nitrogen wastewater[J].Water Treatment Technology,2017(3):56-58.
[6]宋晶.直接驯化嗜盐菌处理高盐废水的研究[J].环境污染与防治,2010,32(2):51-54.
[7]石恺.利用嗜盐海洋细菌强化间歇曝气生物滤池对高盐度废水的处理[D].济南：山东大学,2012.Shi Kai.Halophilic Marine Bacteria Were Used to Strengthen the Treatment of High Salinity Wastewater by Intermittent Biological Aerated Filter[D].Jinan:Shandong University,2012.
[8]李维国,马放,苏俊峰,等.一株中度嗜盐菌的分离鉴定及其强化高盐有机废水处理的研究[J].湖南大学学报:自科版,2008,35(2):84-88.
[9]安立超,严学亿.嗜盐菌的特性与高盐废水生物处理的进展[J].环境污染与防治,2002,24(5):293-296.An Lichao,Yan Xueyi.Characteristics of halophilic bacteria and progress in biological treatment of high salt wastewater[J].Environmental Pollution and Prevention and Control,2002,24(5):293-296.
[10]刘爱民.嗜盐菌的研究进展[J].安徽师范大学学报:自然科学版,2002,25(2):181-184.Liu Aimin.Research progress of halophilic bacteria[J].Journal of China Normal University:Natural Science Edition,2002,25(2):181-184.
[11]陈晓光,王硕,王燕,等.好氧颗粒污泥处理含盐生活污水的特性[J].中国给水排水,2014(5):15-19.
[2]李玲玲.高盐度废水生物处理特性研究[D].青岛：中国海洋大学,2006.Li Lingling.Study on the Biological Treatment of High-salinity Wastewater[D].Qingdao:China Ocean University,2006.
[3]周贵忠,许硕,姚倩,等.不同盐度下活性污泥中微生物群落变化规律及其处理模拟染料废水[J].环境科学,2017,38(7):2972-2977.Zhou Guizhong,Xu Shuo,Yao Qian,et al.Variation of microbial community in activated sludge under different salinity and its treatment of simulated dye wastewater[J].Environmental Science,2017,38(7):2972-2977.
[4]宁卓,张波.嗜盐菌的研究进展及应用[J].现代盐化工2007(1):31-32.Ning Zhuo,Zhang Bo.Research progress and application of halophilic bacteria[J].Modern Salt Chemical Industry,2007(1):31-32.
[5]赵胜楠,赵天楚,高会杰.硝化菌耐盐驯化及处理高含盐氨氮废水实验研究[J].水处理技术,2017(3):56-58.Zhao Shengnan,Zhao Tianchu,Gao Huijie.Experimental study on salt tolerance domestication of nitrifying bacteria and treatment of high salt ammonia nitrogen wastewater[J].Water Treatment Technology,2017(3):56-58.
[6]宋晶.直接驯化嗜盐菌处理高盐废水的研究[J].环境污染与防治,2010,32(2):51-54.
[7]石恺.利用嗜盐海洋细菌强化间歇曝气生物滤池对高盐度废水的处理[D].济南：山东大学,2012.Shi Kai.Halophilic Marine Bacteria Were Used to Strengthen the Treatment of High Salinity Wastewater by Intermittent Biological Aerated Filter[D].Jinan:Shandong University,2012.
[8]李维国,马放,苏俊峰,等.一株中度嗜盐菌的分离鉴定及其强化高盐有机废水处理的研究[J].湖南大学学报:自科版,2008,35(2):84-88.
[9]安立超,严学亿.嗜盐菌的特性与高盐废水生物处理的进展[J].环境污染与防治,2002,24(5):293-296.An Lichao,Yan Xueyi.Characteristics of halophilic bacteria and progress in biological treatment of high salt wastewater[J].Environmental Pollution and Prevention and Control,2002,24(5):293-296.
[10]刘爱民.嗜盐菌的研究进展[J].安徽师范大学学报:自然科学版,2002,25(2):181-184.Liu Aimin.Research progress of halophilic bacteria[J].Journal of China Normal University:Natural Science Edition,2002,25(2):181-184.
[11]陈晓光,王硕,王燕,等.好氧颗粒污泥处理含盐生活污水的特性[J].中国给水排水,2014(5):15-19.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |