A lab-scale UCT-type membrane bio-reactor (MBR) was operated for biological nitrogen (N) and phosphorus (P) removal simultaneously. In order to examine biological nutrient removal (BNR) characteristics of MBR, the lab unit was fed with a synthetic strong and weak wastewater. With strong wastewater, a simultaneous removal of N and P was achieved while application of weak wastewater resulted in a decrease of both N and P removal. Recycled nitrate due to the limited organic in weak wastewater operation probably caused a nitrate inhibition in anaerobic zone. In step feed modification with weak wastewater, both N and P removal capability recovered in the system, indicating that the allocation of COD for denitrification at anoxic zone was a key to increase the biological P removal. In addition, the analysis on the specific P uptake rate in anoxic zone demonstrated that denitrifying phosphorus accumulating organism (dPAO) played an important role to remove up to 40% of P along with N. The sludge production characteristics of UCT-type MBR were similar to ordinary activated sludge with BNR capability.
Skip Nav Destination
Article navigation
Research Article|
June 01 2009
Biological nitrogen and phosphorus removal in UCT-type MBR process
H. Lee;
1Department of Environmental Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, South Korea E-mail: [email protected]; [email protected]
E-mail: [email protected]
Search for other works by this author on:
J. Han;
J. Han
1Department of Environmental Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, South Korea E-mail: [email protected]; [email protected]
Search for other works by this author on:
Z. Yun
Z. Yun
1Department of Environmental Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, South Korea E-mail: [email protected]; [email protected]
Search for other works by this author on:
Water Sci Technol (2009) 59 (11): 2093–2099.
Citation
H. Lee, J. Han, Z. Yun; Biological nitrogen and phosphorus removal in UCT-type MBR process. Water Sci Technol 1 June 2009; 59 (11): 2093–2099. doi: https://doi.org/10.2166/wst.2009.242
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00