Biosolids Study and Testing in China
Currently, the wastewater influent first is filtered through coarse mechanical screens, then fine mechanical screens. After the screening processes, the wastewater goes through a grit removal process, and then it is treated by a biological process through two oxidation ditches with blowers and diffusers. The mixed liquor is discharged to four secondary clarifiers. The wastewater effluent is disinfected with chlorine in a contact basin before it is discharged into the Xiang River. The wasted activated sludge is dewatered by a total of three centrifuges. Polymer is added as the dewatering aid. The average cake solids content is approximately 20%, which is disposed in landfills.
Project Outcomes and Benefits
- Providing biosolids study and testing services
- Evaluating historical biosolids treatment performance
- Selecting potential treatment methods
- Testing potential biosolids treatment methods