Addition of anaerobic tanks to an oxidation ditch system to enhance removal of phosphorus from wastewater.
The oxidation ditch has been used for many years all over the world as an economic and efficient wastewater treatment technology. It can remove COD, nitrogen and a part of phosphorus efficiently. In the experiment described, a pilot scale Pasveer oxidation ditch system has been tested to investigate the removal of phosphorus from wastewater. The experimental results showed that influent total phosphorus(TP) was removed for 35%-50%. After this, two anaerobic tanks with total volume of 11 m3 were added to the system to release phosphorus. As a result, the TP removal efficiency increased by about 20%. At an anaerobic HRT of about 6 hours, a TP removal efficiency of 71% was achieved.
Liu
Jun-xin
JX
Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. jxliu@mail.rcees.ac.cn
van Groenestijn
J W
JW
Doddema
H J
HJ
Wang
Bao-zhen
BZ
D001421:Bacteria, Anaerobic; D019149:Bioreactors; D005068:Eutrophication; D010084:Oxidation-Reduction; D010758:Phosphorus / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*
D010758:Phosphorus