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

Virus removal by JOHKASOU (domestic wastewater treatment systems)

JOHKASOU（生活污水处理系统）去除病毒

基本信息

批准号：
05650525
负责人：
KANEKO Mitsumi
金额：
$ 1.02万
依托单位：
Setsunan 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-05650525/
关键词：
JOHKASOU Virus in water E.coli phage Enteric viruses concentration of viruses aeration tank with contact media ポリオウイルス接触曝気消毒

项目摘要

Virus removal of JOHKASOU,which is small treatment plant for domestic wastewater, was investigated using small model of JOHKASOU.E.coli phages (T2 phage) of 76% of viruses in influent water were removed at 1st anerobic tank. The reduction rate in 2nd anaerobic tank was 25%. The aeration tank with contact media could removed 81% of T2 phages remained in 2nd anaerobic tank. Totally the JOHKASOU could reduce 97% of phages in influent water of the model under standard loading of 0.076kg BOD/m^3・day which have been applied to actual plants. The reduction rates decreased under conditions of BOD loadings of more 1.5 times than the standard loading. When the loadings were increased by 0.152kgBOD/m^3・day (twice the loading of the standard) , the reaction rate reduced to 64%. Similar relationships between virus reductions and BOD loadings were obtained in the experiments using of polio virus and coxsackievirus. These viruses could be removed better than T2 phage. Assuming each tank to be mixed completely, virus reduction activities defined as k in the equation ; dN/dt=-kt, where N indicates viral counts, were calculated. The higher the BOD loadings, the lower the values of k. The virus densities of influent waters did not affect the virus reduction rates.

采用小型生物反应器对日本JOHKASTROPE生活污水处理厂的病毒去除进行了研究，结果表明，在第一厌氧池中，大肠杆菌T2噬菌体的去除率可达76%。第二厌氧池的还原率为25%。接触填料曝气池可去除二级厌氧池中81%的T2菌。在标准负荷为0.076kgBOD/m^3·d的条件下，JOHKASBR对模型进水COD的去除率为97%。当BOD负荷大于标准负荷的1.5倍时，去除率下降。当负荷增加0.152kgBOD/m^3·d（标准负荷的2倍）时，反应速率下降到64%。在使用脊髓灰质炎病毒和柯萨奇病毒的实验中获得了病毒减少和BOD负荷之间的类似关系。这些病毒可以比T2噬菌体更好地去除。假设每个罐完全混合，计算病毒减少活性，定义为方程中的k; dN/dt=-kt，其中N表示病毒计数。BOD负荷越高，k值越低。进水沃茨的病毒浓度对病毒去除率没有影响。