| Project/Area Number |
10558092
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 展開研究 |
|---|
| Research Field |
環境保全
|
|---|
| Research Institution | Nagaoka University of Technology |
|---|
Principal Investigator |
KOBAYASHI Takaomi Faculty of Engineering Associate Professor, 工学部, 助教授 (90225516)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SUWA Masaaki Chuetsu Yeast Researcher, 合同研究室, 課長(研究職)
TAKEDA Tuyoshi Chuetsu Yeast Researcher, 合同研究室, 係長(研究職)
FUJII Nobuyuki Faculty of Engineering Professor, 工学部, 教授 (50011119)
TAKAHASHI Kazuo Chuetsu Yeast Researcher, 合同研究室, 取締役(研究職)
|
|---|
| Project Period (FY) |
1998 – 1999
|
| Project Status |
Completed (Fiscal Year 1999)
|
| Budget Amount *help |
¥10,800,000 (Direct Cost: ¥10,800,000)
Fiscal Year 1999: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1998: ¥7,900,000 (Direct Cost: ¥7,900,000)
|
|---|
| Keywords | Ultrasound membrane process / Membranes / Waste water treatment / Sonic power / Fouling / Cleaning technique / Permiability / Membrane separetion / 超音波処理 / ソノ膜処理 / ファウリング / キャビテーション / 共振周波数 / 透過速度 |
|---|
| Research Abstract |
Ultrasound cleaning technique was applied to remove fouling of ultrafiltration and microfiltration membranes, as peptone solution was permeated by cross-flow filtration. The ultrasound employed had 45 kHz frequency with 2.73 W/cm2 output power. For each polymeric membrane made of polysulfone, polyacrylonitrile and polyvinlidene fluoride, the cleaning experiments were carried out with three kinds of methods using sonication, water cleaning and water cleaning under sonication. It was found that water cleaning under sonication is effective methods for recovery of permeate flux. The ultrasound effect on cleaning of fouled membrane was also examined at different filtration temperatures using various peptone concentrations. It was discussed that the cleaning of fouled membrane by ultrasound association with water cleaning is a new effective method.
|
