Study on the Immobilization of the Effective Microorganisms Using Biological Activated Carbon

生物活性炭固定化有效微生物的研究

基本信息

批准号：
05680478
负责人：
SUDO Ryuichi
金额：
$ 1.22万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05680478/
关键词：
Biological activated carbon Raw water Attached bacteria Protozoa Rotatoria Nematoda Philodina 二者培養消毒

项目摘要

In order to investigate the relation ship between treatment efficiency and operation conditions, characteristics of attachment and desorption of biofilm, and the immobilization of microorganisms on the biological activated carbon. A series of pilot plants called the biological activated carbon fluidized bed process were installed, and the real polluted lake waters (SS=15mg/l, COD=8mg/l) were used in these pilot plant experiments. The result obtained through this experimental study may be summarized as follows.The treatment efficiency for organic matter such as TOC and DOC was found to be increased if the hydraulic retention time (HRT) increased, while the HRT was increased from 0.5 to 2 hours. It was recognized that HRT=1 hour was more reasonable in this process, and the removal of TOC and DOC was more than 40%. In the meantime the removals of SS,ammonium nitrogen and algae were found to be 50%, 55% and 50%, respectively. Although the treatment efficiency decreased after some periods of operation, it can be recovered through the proper backwash by the combination of water and air every two weeks.10 species of Flagellate, 17 Ciliata, 17 Sarcodina, ( Metazoa (including Rotatoria, Nematoda, Oligochaeta) were investigated in the fluidized bed process. The dominant species were found to be Monas, Vorticella, Epistylis, Stentor and Philodina, and the maximum population was 500/ml. Nematoda was found to be an obstruct organism, its control is still being studied. Pseudomonas, Alcaligenes, Acinetobacter etc. were lso recognized, the population reached to 10^7-10^8/ml.It was verified that the treated water by this process could be used as a source of raw water for water supply.

为了研究治疗效率和操作条件之间的关系，依恋的特征和生物膜解吸的特征，以及在生物活化碳上的微生物固定。在这些试验植物实验中，使用了一系列称为生物活化碳流化床工艺的试验厂，并使用了实际污染的湖水（SS = 15mg/L，COD = 8mg/L）。通过这项实验研究获得的结果可以总结如下。如果液压保留时间（HRT）增加，发现有机物（例如TOC和DOC）的治疗效率会增加，而HRT的HRT从0.5小时提高到2小时。人们认识到，在此过程中，HRT = 1小时更合理，而删除TOC和DOC则超过40％。同时，发现SS，氮和藻类的去除率分别为50％，55％和50％。 Although the treatment efficiency decreased after some periods of operation, it can be recovered through the proper backwash by the combination of water and air every two weeks.10 species of Flagellate, 17 Ciliata, 17 Sarcodina, ( Metazoa (including Rotatoria, Nematoda, Oligochaeta) were investigated in the fluidized bed process. The dominant species were found to be Monas, Vorticella, Epistylis, Stentor and菲洛迪纳（Philodina）和最高人口为500毫升。