Approach to the Enhancement of Removal of Phosphorus and Nitrogen in Oxidation Ditch
WANG Kun -ping, DENG Rong- sen, LI Wei -min, WANG Tao ,
DOI:10.11835/j.issn.1674-4764.2006.06.021
Received April 25, 2006,Revised April 25, 2006, Accepted , Available online July 01, 2015
Volume ,2006,Pages 79-83
- Abstract
In response to the characteristic of oxidation ditch and its limitation in removal of phosphorus and nitrogen,the research of the biological phosphorus and nitrogen removal in micro-environment and macroenvironment was reviewed.The process of enhancing phosphorus and nitrogen removal was discussed,the way to improve the phosphorus and nitrogen removal was presented:(1)the proper sequential arrangement of the locations of aerator,influent,effluent and return sludge to form the reversed A~2/O process;(2)forming more rigorously anaerobic zone by means of vertical flow circle;(3)the proper supply of oxygen,to avoid insufficiency of aerobic phosphorus uptake and nitrification with low oxygen supply;While to keep from overmuch waste of carbon source going against de-nitrification,and high oxygen concentration going against anaerobic phosphorus release due to high oxygen supply;(4)the proper hydraulic parameter and oxygen supply mode.