DINGYan-yan,YUHong-yu,DAIXiao-hu.Research Progress on Phosphorus in Sludge and Its Recovery Technology[J].China Water & Wastewater,2022,38(16):29-34.
Research Progress on Phosphorus in Sludge and Its Recovery Technology
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第16期
Page:
29-34
Column:
Date of publication:
2022-08-17
- Keywords:
- sludge; phosphorus recovery; phosphorus occurrence states; technology selection; comprehensive treatment
- Abstract:
- Phosphorus recovery from sludge is a strategic demand to solve the shortage of phosphorus resources and an effective means of waste recycling. Phosphorus release has become an important prerequisite for phosphorus recovery from sludge due to the presence of toxic substances. The occurrence states and transformation mechanism of phosphorus in three main phosphorus-rich sludge were introduced based on different sewage treatment processes and subsequent sludge treatment and disposal technologies. The importance of identifying phosphorus occurrence states in sludge for phosphorus recovery technology development was proposed. Based on the current understanding of the phosphorus occurrence sates in sludge, the chemical method represented by acid extraction and the physicochemical biological combination technology with anaerobic digestion as the core were effective methods of phosphorus release from sludge. The current research status and existing problems of phosphorus recovery technology in sludge combing the concept of comprehensive treatment and disposal of sludge were discussed. It is pointed out that the development of phosphorus recovery technology suitable for anaerobic resource utilization of sludge has become a sustainable development direction.
Last Update:
2022-08-17