1. Recycling of white water in paper mill and recycling of waste water and lignin in black liquor;
2. Mechanical industry, solid liquid separation of emulsion and oily wastewater in petroleum industry;
3. Paint treatment and printing and dyeing wastewater treatment in automobile industry or other industries;
4. Pretreatment process of slaughtering and food industry;
5. It is difficult for biodegradable organic compounds to be treated with solid liquid separation;
6. Chemical treatment of heavy metal ions and electroplating wastewater.
7. Municipal tap water and drinking water treatment project;
8. Solid liquid separation and concentration process of residual sludge in wastewater treatment process.