活性污泥微生物种群变化特性的研究
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摘要
本课题在试验室条件下,采用SBR工艺,将生活污水在试验装置中直接曝气,通过控制环境条件逐步培养出活性污泥。在活性污泥培养过程中,依据试验现象重点分析微生物种群的变化规律及其生物降解特性;同时对培养过程中出现的大量菌胶团进行了观察与分析;并通过人为的改变负荷,研究负荷对活性污泥主体微生物的影响。
     研究结果表明:一,在试验室条件下,通过控制环境条件成功的培养出了活性污泥。培养过程中,生物是由低等向高等演化的。二,活性污泥培养过程中,主体微生物的群落在不断的发生着变化,出水水质指标也有相应的变化。培养初期,以大量的游离细菌为主体微生物,所测得污泥的MLSS与SV_(30)数据均偏小,分别为186 mg/L、1.30%;污水出水效果差:COD的去除率为40%,BOD的去除率26.6%。培养中期,游泳型纤毛虫是主体微生物,污泥的结构也比培养初期紧密,MLSS与SV_(30)数据分别为1075 mg/L、5%;污水出水效果有所提高:COD的去除率为60%,BOD的去除率64.5%。培养后期,钟虫类原生动物的出现并成为优势种群,标志着活性污泥已成熟,所测得的MLSS、SV_(30)数据分别为1949.6mg/L、15%;大量枝状菌胶团,使得污泥絮体变大;此时COD去除率达74%,BOD的去除率达74.2%,污水净化效果良好。三,此次培养活性污泥的试验过程中,产生了生枝状菌胶团,显著提高了污水COD去除率,枝状菌胶团对水质及冲击负荷的耐受力较强,它的存在可增强受损活性污泥的可逆转性。四,人为的改变有机负荷,观察其对于主体微生物的影响,结果表明高负荷容易引起线虫的大量繁殖,使得污泥发生异常,出水水质差,而主体微生物枝状菌胶团对冲击负荷的耐受力较强,并未发生明显改变。
In this dissertation, by using the method of SBR in the lab condition, the domestic sewage was direct aerated in testing equipment. The activated sludge was cultivated step by step by controlling the environment conditions. During the process of cultivating activated sludge, the laws of change and biodegradation characteristics of microorganism population were emPH atically analyzed according to the experiment PHenomenon. Observed and analyzed large amount of zoogloeas which appeared during the process of cultivating. The influences of load on main microbe by changing the load were studied.
    The results showed that: 1. The activated sludge was cultivated successfully in lab by controlling the environment conditions. The microbe evolved from low-grade to high-grade during the process of cultivating. 2. During the process of cultivating, the effluent quality indexes changed with the change of main microbial community. At the early stage of cultivating, the free cells were the main microbe. The effluent effect was not good. The removal rate of COD is 40%, of BOD is 26.6%. The sludge settleability was not good enough in Aeration Tank, the value of SV_(30) is 1.3%.At the medium stage of cultivating, the swimming type of ciliates were the main microbe. The structue of sludge is compacter than at the early stage of cultivating. The effluent effect was improving. The removal rate of COD is 60%, of BOD is 64.5%. The sludge's SV30 in Aeration Tank is 5%. At the late stage of cultivating, the Vorticella like protozoan appeared and became the dominant population. It marked the maturity of the activated sludge. The value MLSS achieved 1949.6mg/L. A large amount of branched zoogloeas made the flocs of activated sludge bigger. The removal rate of COD achieved 74%, of BOD achieved 74.2%. The sludge's SV_(30) in Aeration Tank is 15%. The efficiency of sewage treatment is good.3. During the process of cultivating activated sludge, Branched zoogloeas appeared. The removal rate of COD increased remarkably. Branched zoogloea possesses stronger tolerance for water quality and shock loading ,which can enhance the reversibility of injured activated sludge.4. Observed the influences of changing organic load on main microbe, the results showed that high load can cause the nematode mass rearing, made the sludge abnormal and the effluent quality bad. Branched zoogloea possesses stronger tolerance for water quality and shock loading, so did not change.
引文
[1] 张寿金,黄巍.中国水资源的可持续利用研究[J].中国人口资源与环境,1999,9(2):21-25
    [2] 王先甲,胡振鹏.水资源持续利用的支持条件与法则[J].自然资源学报,2001,16(1):9-12
    [3] 郭培章,宋群,主编.中外节水技术与政策案例研究[M].北京:中国计划出版社,2003:100~104
    [4] 徐祖信,编著.河流污染治理技术与实践.北京:中国水利水电出版社,2003:516-520
    [5] 刘兆荣,等编.环境化学教程.北京:化学工业出版社,2003:21-24
    [6] 石淑倩,我国城市污水回用现状及前景,环境技术,2002(2):33
    [7] 喻泽斌,网敦球,张学洪,城市污水处理技术发展回顾与展望,广西师范大学学报:自然科学版 2004,22(2):81~87
    [8] 城市污水强化一级处理新工艺——活化污泥法,蒋展鹏,尤作亮,师绍琪等.《中国给水排水》1999年第12期
    [9] 郑一军.推进城市污水资源化 保障水资源可持续利用.21世纪国际城市污水处理及资源化发展战略研讨会与展览会.2001.11:49-51
    [10] M.F.WENTZEL,m.c.AND Ekama, G.A(1997a).Activated sludge mixed liquorheterotroPH ic active biomass.Water SA(inpress).
    [11] A.P.C.,Ekama.G.A and Marais,G.v.R.(1986).The activated sludge process Part 4-application of the general kinetic model to anxic-aerobic digenstion of waste activated sludge.Water Res,20(8),943-958
    [12] 胡家骏,周群英.环境工程微生物学.北京:高等教育出版社,1988
    [13] 周凤霞,白京生.环境微生物.北京:化学工业出版社,2003
    [14] 顾夏声,李献文,竺建荣.水处理微生物学.北京:中国建筑工业出版社,1998
    [15] 高廷耀,顾国维.水污染控制工程(下册).北京:高等教育出版社,1999
    [16] 徐亚同,史家樑,张明.污染控制微生物工程.北京:化学工业出版社,2001
    [17] Feng, Q., Cheng, G.D., Masao, M.K. Trends of water resource development and utilization in add north-west China. Environmental Geology, 2000, 39(8): 831-838
    [18] Calijuri, Maria Lucia, Bhering, Eduardo M.,Souza, Ligiane A.,et al. Environmental and socioeconomic information system for water resource management. Journal of Surveying Engineering, 2005, 131(3):97-101
    [19] Bastian, Robert K. The future of water reuse. BioCycle, 2006, 47(5): 25-27
    [20] 马志毅,苏玉民.环境工程专业英语.北京:中国环境科学出版社,1995:49-51
    [21] 龙腾锐,何强,林刚.活性污泥中丝状菌与絮体结构的关系研究.中国给水排水,2000.2,vol.16:5-8
    [22] 罗宁,洪焰.活性污泥法快速培菌的探索与实践.环境与开发,2000.4,vol.15:37-39
    [23] 张一丁,王宏韬,郑丽娜.浅谈活性污泥处理法的革新和替代技术.国土与自然资源研究,2002.1:54-55
    [24] 陈声贵,许木启,曹宏,杨向平,甘一萍,翟家骥,刘伟岩,邵永怡.活性污泥运转效能的生物检测.应用与环境生物学报,2002.8(4):438-442
    [25] 管位农,朱晓玫.活性污泥沉降性能的改善.石化技术与应用,2000.6,vol.18,No.3:182-184
    [26] 赵立春,赵清华,李英姿.微生物在活性污泥法水处理中的应用.山东环境,1998.4,vol.26,No.4:410-412
    [28] 奚旦立.环境工程手册(环境监测卷).北京:高等教育出版社,1998:338-342
    [29] 高春娣,彭永臻,王淑莹,川哲夫,尾崎益雄,李春全.不同有机负荷下氮缺乏对活性污泥膨胀的影响.安全与环境学报,2002.6,vol.2,No.3:22-26
    [30] 李探微 彭永臻 朱晓.活性污泥中原生动物的特征和作用.给水排水,2001,27卷,4期
    [31] 孙玉林.中水技术发展的新阶段.
    [32] 张可方,张朝升,方茜,伍小军,周莉萍,谭小萍.序批式活性污泥法处理城市污水试验研究.广州大学 土木工程学院市政与环境工程系,广东 广州 2003
    [33] 侯志和,黄志胜.中段水处理水活性污泥的培养.环保与节能,2001,11:48-49
    [34] 中华人民共和国国家标准《建筑中水设计规范》.GBJXX-2001.2001年11月.
    [35] 李伟英,范理初.浅议中水回用技术.
    [36] Huang L P, Zhou J T, Yang F L, et al. Biodegradation of 1-amino-4-bromoanthraquinone-2-sulfonic acid by Zoogloea itzigohn HP3[A].In: Hu X J, Po L Y(eds). Proceedings of the Third Asia-Pacific Conference on Sustainable Energy and Environmental Technolog
    [37] 王淑莹,彭永臻,周利.用溶解氧浓度作为SBR法过程和反应时间控制参数[J].中国环境科学,1998,18(5):415-418
    [38] 周凤霞,陈剑虹.淡水微型生物图谱[M].北京:化学工业出版社,2005
    [39] 张方可,荣宏伟,张朝升.间歇式活性污泥法处理生活污水的试验研究[J].哈尔滨工业大学学报(自然科学版),2002,18(2):201-204
    [40] 许保玖,龙腾锐.当代给水与废水处理原理[M].北京:高等教育出版社,2000
    [41] 程树培.环境生物技术试验指南.南京:南京大学出版社,1995:97-101
    [42 陈丽华、王增长、牛志卿.活性污泥的相关理论及控制方法.太原理工大学.2002.11
    [43] 高春娣,彭永臻,王淑莹,川哲夫,尾崎益雄,杨庆.营养物质缺乏引起的丝状菌污泥膨胀.安全与环境学报,2002.:80-91

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