权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study on Municipal Wastewater Treatment by Immobilized Microbes

固定化微生物处理城市污水的研究

基本信息

批准号：
60550380
负责人：
SOMIYA Isao
金额：
$ 1.15万
依托单位：
Kyoto 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：
1985
资助国家：
日本
起止时间：
1985 至 1987
项目状态：
已结题

项目摘要

In order to treat mainly dissolved substrate contained in domestic sewage, a new biological treatment process named Auto-Immobilized Microbial System (AIMS) has been developing for these few years by the suthors.The bench-scale experiments have been conducted for more than 300 days with varying the influent substrate concentration of artificial wastewater. From the results, AIMS could reduce effluent total and dissolved COD concentrations to as low as around 16 and 9 mg/l, respectively, against influent COD around 220 mg/l with no application of sludge recycle and final solids-liquid separation processes. The particulate matter discharged from AIMS was mostly rotifer's bodies which were expected to be fed upon by fish. Thus, there will not be such an intensive requirement for treatment and disposal of sludge produced in wastewater treatment process as that for activated sludge process.This process has been also applied to the bench-scale experiments by using practical domestic sewage. Generally speaking from the view point of energy saving, on a small scale biological treatment plant, full decomposition of particulate organic matter has not been recommended from the view point of energy saving. In this research, particulate pollutants and phosphorus were controlled and removed in high efficiency by applying chemical coagulation-sedimentation operation to raw sewage. The supernatant was introduced to the AIMS. The results of this experiments against practical domestic sewage showed that influent total and dissolved COD were removed by around 30 - 50 mg/l to the level of 20 and 15 mg/l in the effluent, respectively, at 10 deg.C. which was comparatively lower water temperature in Japan.

为了处理生活污水中含有的主要溶解性基质，近年来作者开发了一种新的生物处理工艺——自动固定化微生物系统（AIMS）。通过改变人工废水的进水基质浓度，进行了300多天的实验。结果表明，在不使用污泥循环和最终固液分离工艺的情况下，AIMS可以将出水总COD和溶解COD浓度分别降低至16 mg/l和9 mg/l左右，而进水COD约为220 mg/l。AIMS排放的颗粒物主要是轮虫的身体，预计会被鱼类吃掉。因此，对废水处理过程中产生的污泥的处理和处置，将不像对活性污泥处理过程那样有密集的要求。该工艺已应用于实际生活污水的实验中。一般来说，从节能的角度来看，在小型生物处理厂上，从节能的角度来看，还不建议完全分解颗粒有机物。在本研究中，采用化学混凝沉淀法对原污水进行了颗粒污染物和磷的高效控制和去除。将上清液引入AIMS。对实际生活污水进行的实验结果表明，在10℃条件下，进水总COD和溶解COD分别去除约30 - 50 mg/l至20和15 mg/l的水平。日本的水温相对较低。