| BEIJING ECOJOY WATER TECHNOLOGY CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110068058 | APPARATUS AND PROCESS FOR TREATING WASTEWATER - An apparatus for treating wastewater is provided, which comprises a biological reaction tank and a membrane separation device. The membrane separation device is provided outside the biological reaction tank. A mixing device is provided inside the biological reaction tank and an aeration device is provided inside the membrane separation device or inside a container for loading the membrane separation device. The biological reaction tank is connected to the membrane separation device or the container for loading the membrane separation device through a pipeline. A process using the apparatus for treating wastewater is also provided. | 03-24-2011 |
| 20110067737 | METHOD AND APPARATUS FOR CLEANING A FILM SEPERATING DEVICE - A method for cleaning a film separating device involves: a) performing positive-direction water cleaning when the ratio between the film filter resistance and the preliminary film filter resistance is less than 1.2; b) performing reverse water cleaning when the ratio between the film filter resistance and the preliminary film filter resistance is greater-than or equal-to 1.2; c) performing reverse chemical cleaning when the ratio between the film filter resistance and the preliminary film filter resistance is greater-than or equal-to 2; d) performing positive-direction chemical cleaning when the ratio between the film filter resistance and the preliminary film filter resistance is greater-than or equal-to 3. | 03-24-2011 |
