TY - GEN
T1 - Use of DSS-MBR-PACT process to improve nitrification and AOX removal in the treatment of herbicides production wastewater
AU - Shoshani, Liron
AU - Sheindorf, Chaim
AU - Brenner, Asher
N1 - Publisher Copyright:
Copyright © 2014 Water Environment Federation.
PY - 2014/10/1
Y1 - 2014/10/1
N2 - This study assessed whether the addition of powdered activated carbon (PAC) to a continuous dual-sludge membrane bioreactor system (DSS-MBR-PACT) can improve the removal of various contaminants from complex herbicide production wastewater. The main focus was on the removal of nitrogen compounds, TOC, and AOX. The dual-sludge pilot setup comprised a CAS system feeding MBR system. The dilution ratio was gradually decreased (with well water) from 0.8 to 0 (no dilution), and PAC was added in the last phase to maintain an equilibrium concentration of 2,000 mg/L. PAC addition effected a high and steady removal (98%) of the ammoniacal nitrogen conforming to the sea discharge limit of 5 mg/L. However, the effluent concentrations of total nitrogen, TOC, and AOX were still above the stringent discharge limits of 20, 100, and 0.5 mg/L, respectively. It is recommended that complementary physico-chemical treatment steps be added in the treatment of this kind of wastewater.
AB - This study assessed whether the addition of powdered activated carbon (PAC) to a continuous dual-sludge membrane bioreactor system (DSS-MBR-PACT) can improve the removal of various contaminants from complex herbicide production wastewater. The main focus was on the removal of nitrogen compounds, TOC, and AOX. The dual-sludge pilot setup comprised a CAS system feeding MBR system. The dilution ratio was gradually decreased (with well water) from 0.8 to 0 (no dilution), and PAC was added in the last phase to maintain an equilibrium concentration of 2,000 mg/L. PAC addition effected a high and steady removal (98%) of the ammoniacal nitrogen conforming to the sea discharge limit of 5 mg/L. However, the effluent concentrations of total nitrogen, TOC, and AOX were still above the stringent discharge limits of 20, 100, and 0.5 mg/L, respectively. It is recommended that complementary physico-chemical treatment steps be added in the treatment of this kind of wastewater.
KW - AOX
KW - Activated sludge
KW - De-nitrification
KW - Dual-sludge system
KW - Herbicides wastewater treatment
KW - Membrane bioreactor
KW - Nitrification
KW - Powdered activated carbon treatment
UR - http://www.scopus.com/inward/record.url?scp=84946035819&partnerID=8YFLogxK
U2 - 10.2175/193864714815940640
DO - 10.2175/193864714815940640
M3 - Conference contribution
AN - SCOPUS:84946035819
T3 - 87th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2014
SP - 2504
EP - 2520
BT - 87th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2014
PB - Water Environment Federation
T2 - 87th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2014
Y2 - 27 September 2014 through 1 October 2014
ER -