【作者】 刘志刚；

【导师】 邱忠平；

【作者基本信息】 西南交通大学 ， 生物化学与分子生物学， 2014， 硕士

【摘要】 SBR能够有效地处理生活污水和低浓度有机工业废水,且工艺简单、运行费用低。垃圾渗滤液水质复杂,含有多种有机污染物,CODcr和氨氮含量高,对微生物有抑制作用,降低了SBR的处理效果。本文研究复合菌剂强化SBR工艺对渗滤液的处理效果的影响。得出如下结论：(1)经过※个周期不同进水驯化,确定SBR最佳运行参数,具体运行工况为：进水期※h、曝气※h、缺氧※h、曝气期※h、缺氧※h、曝气※h、沉淀期※h、排水期※h。(2)运行SBR反应器,分别处理稀释※%、※%、※%、※%、※%、※%渗滤液以及渗滤液原样,实验组比对照组对CODCr、NH3-N、TN、TP、BOD5、SS平均去除率分别※了※%、※%、※%、※%、※%、※%,表明复合菌剂※了SBR对渗滤液的处理效果；分别对两组反应器进行有机负荷冲击,实验组对CODcr的去除率比对照组※※%,表明复合菌剂※了活性污泥耐负荷冲击能力。(3)分别对驯化前活性污泥、驯化结束后、运行结束后实验组和对照组活性污泥取样,采用MPN计数法对其中微生物进行计数,对比对照组,实验组细菌数量※了※个/L,表明投加复合菌剂※了污泥中微生物的生长繁殖；计算并分析五组样品中微生物群落ERIC-PCR指纹图谱※以及各样品的指纹图谱条带,实验组的条带明显比对照组※驯化及运行结束后,实验组与对照组的ERIC-PCR指纹图谱相似性均为※%,表明复合菌剂※了活性污泥的微生物种群结构。更多还原

【Abstract】 SBR is effective and feasible to domestic sewage and low concentration organic industrial wastewater treatment, which has a simple process and low operation cost. Leachate has complex component and contains a variety of organic pollutants. Besides, the concentration of CODcr and nitrogen is high and the growth of microbiology is inhibited, and then reduces the treatment effect of SBR. In this paper, through the applications of laboratory microbial agents on SBR process in treatment of chengdu solid waste sanitary landfill, we study the influence of the agent on the micro ecology in activated sludge as well as the effect of pollutant removal in the leachate. The main results are as follows:(1) Through※cycles of different concentration of feed water domestication, determined the optimal operation parameters for SBR, and the operation condition was:the water phase for※h, aeration period for※h, a lack of oxygen for※h, oxygen aeration period for※h, a lack of oxygen for※h, xygen aeration period for※h, precipitation for※h and drainage period for※h.(2) We set the two reactors to treat different dilution of leachate at※%※%※%※%、※%※%※%and the※leachate. Comparing with the blank group, the average removal rate of leachate CODCr, NH3-N, TN, TP and BOD5, and SS of the experimental group respectively increased by※%,※%,※%,※%,※%,※%. It showed that the microbial lab agents changed the activated sludge biological systems, raised the sludge microbial metabolism and increased the removal efficiency of leachate. Through the study of the impact load of the two reactors, we could find that the removal rate of CODcr which was in experimental group reactor was nearly※%higher than the average blank group reactor. And the new system had a strong resistance to impact the load capacity.(3)The activated sludge sampled from unacclimated activated sludge, acclimated activated sludge and the sludge of blank group and experimental group after treatment. Count the bacteria of the※kind sludge with MPN method. Compared to blank group, the bacteria quantity of experimental group increased※A/L, which shows the agents improved the growth of microbiology in activated sludge. Using ERIC-PCR technique to calculate the similarity of※kind of sludge, the results show that the similarity of acclimated sludge and the sludge after operation, as well as the sludge of experimental and the blank group, reached to※%, which shows the agents changed the microbe species of the sludge.更多还原