Sudden failure of biological nitrogen and carbon removal in the full-scale pre-denitrification process treating cokes wastewater

Decontamination of industrial wastewater containing pesticides by combining large-scale homogeneous solar photocatalysis and biological treatment

“…Nevertheless this problem is not critical, as the solution will be to perform the inoculation and start-up of the biological system again, considering the need for a longer and more gradual adaptation process to nitrogenous forms, permitting the growth of nitrifying bacteria. It has been demonstrated that, after a correct adaptation period of the biomass, aerobic biological systems are able to treat high-ammonium concentrations (between 200 and 300 mg N/L) without nitrifier inhibition [29][30][31]. Moreover, several immobilized biological systems (as fixed biofilms) have been demonstrated to be successful for carbon and nitrogen removal [32][33][34][35].…”

Development of four-stage moving bed biofilm reactor train with a pre-denitrification configuration for the removal of thiocyanate and cyanate

“…The performance of the MBBR with a pre-denitrification configuration was consistent with other studies. Pre-denitrification process to remove nitrogen compounds from coke wastewater has been intensively studied by the group of Jong Moon Park (Kim et al, 2011(Kim et al, , 2009Lee and Park, 1998). In this suspended sludge process, organic matter (including phenol and SCN À ) was used in an anoxic tank to remove nitrate through denitrification.…”

Phenol degradation by isolated bacterial strains: kinetics study and application in coking wastewater treatment

“…In addition, phenol 124 www.soci.org XB Zhu, JP Tian, LJ Chen is the most abundant pollutant in coking wastewater, and its concentration can be as high as 300 mg L −1 . 13 It could therefore be a serious inhibitor to the added degrading bacteria. 1,14 Therefore, if phenol could be degraded significantly by bioaugmentation, this would improve the efficiency of biological treatment of coking wastewater.…”