[Biodegradation behavior of ethylenediaminetetraethylene acid].
Aerobic and anaerobic degradability of ethylenediaminetetraethylene acid(EDTA) were measured on Warburg respirometer and anaerobic batch reactors. Biodegradation of EDTA as a single substance was poor, but biodegradation of EDTA with co-substrate could be improved. The wastewater containing EDTA can be treated by activated sludge process. The EDTA removal efficiency was 80% under the circumstance HRT 16 h and EDTA removal efficiency reached to 92.5%-95.1% when HRT was 20 h. The main factor affecting the biodegradability of EDTA is sludge remained time.
Yang
X
X
Dept. of Environ. Sci. and Eng., Tsinghua University, Beijing 100084, China.
Jiang
Z
Z
Shi
S
S
Guan
Y
Y
Deng
J
J
Lu
M
M
D001673:Biodegradation, Environmental; D004492:Edetic Acid / Q000378:metabolism*; D012722:Sewage
D012722:Sewage; D004492:Edetic Acid