MATEC Web Conf.
Volume 70, 20162016 The 3rd International Conference on Manufacturing and Industrial Technologies
|Number of page(s)||5|
|Section||Environmental Sciences and Engineering|
|Published online||11 August 2016|
Removal of High C and N Contents in Synthetic Wastewater Using Internal Circulation of Anaerobic and Anoxic/Oxic Activated Sludge Processes
School of Environmental Engineering, Institute of Engineering, Suranaree University of Technology
Internal circulation (IC) of activated sludge anaerobic and anoxic/oxic processes was used to treat high carbon (C) and nitrogen (N) synthetic wastewater in order to achieve an effluent standard. The 1st & 2nd internal circulation anoxic (ICA) has shown a great advantage. Because under anoxic conditions heterotrophs utilize organic matter (OM). OM and NO3−-N are an electron donor and an electron donor, respectively. As a result, under conditions high carbon and NO3−-N, N2 production can generate higher than with 1st ICA BNR system only. Aerobic IC to anoxic, 1st ICA, and effluent IC to anoxic, 2nd ICA, could remove 100% of COD, 99.60% of TKN, and 99.90% of NH4+-N. The organic loading rate and NH4+-N loading rate are 68.38 kg-COD m−3 d−1 and 9.86 kg NH4+-N m−3 d−1, respectively in synthetic wastewater. Performance of these ICA activated sludge treatment was achieved the discharge standard with effluent COD less than 0 mg L−1,effluent NH4+-N less than 4 mg NH4+-N L−1, effluent NO2−-N less than 0.1 mg NO2−-N L−1, and NO3−-N less than 0.02 mg NO3−-N L−1.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.