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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.

为了研究处理效果与运行条件的关系、生物膜的附着和解吸特性以及生物活性炭对微生物的固定化。采用生物活性炭流化床工艺，以真实的受污染的沃茨（SS= 15 mg/l，COD= 8 mg/l）为试验对象，进行了中试试验。试验结果表明，水力停留时间（HRT）从0.5小时增加到2小时，随着HRT的增加，TOC、DOC等有机物的处理效率提高。试验结果表明，HRT= 1h的工艺较为合理，TOC和DOC的去除率均在40%以上。对SS、氨氮和藻类的去除率分别为50%、55%和50%。虽然运行一段时间后处理效率有所下降，但每两周通过水和空气的组合进行适当的通风可以恢复。在流化床工艺中调查了10种鞭毛虫，17种纤毛虫，17种肉足虫，17种后生动物（包括旋转门，线虫门，寡毛门）。优势种为单胞菌属、涡胞菌属、Epistylis、Stentor和Philodina，最大种群数为500个/ml。线虫是一种障碍性生物，其防治仍在研究中。假单胞菌属、产碱菌属、不动杆菌属等也有检出，其数量可达10^7-10^8个/ml，证明该工艺处理后的水可作为供水水源。