levapor carriers nitrification of industrial and complex effluent bnr removal simultaneous nitrification denitrification ifas mbbr/ifas media mbbr/ifas nitrification biological wastewater treatment wastewater treatment bio carriers ifas process mbbr bnr municipal wastewater treatment pu carriers levapor technology anaerobic-aerobic treatment etp/stp upgradation polluted air treatment activated sludge plant retrofit and upgradation mbbr media industrial effluent treatment upgradation/expansion of bod removal plant nutrient removal for municipal wastewater sndn biological nutrient removal anaerobic treatment levapor complex effluent industrial effluents pulp and paper pulp and paper mill effluent ammonia/nitrate removal voc removal h2s removal bio trickling filter increasing capacity of existing etp reversible adsorption powdered activated carbon activated sludge process biodegradation of recalcitrant organics refractory substances nitrification in cold climate upgradation of existing etp/stp treatment of complex effluent biofiltration of air etp/stp trouble shooting and optimization biotrickling filter (btf) process engineering upgradation of existing etp and stp herbicides pesticides agro chemicals industrial effluent integrated fixed film activated sludge biological media high surface area nitrogen removal refractory cod removal biological nitrogen removal in industrial effluent complex effluent nitrification mbbr/ifas biological nitrification active biocides removal with nitrification hyper saline effluent nitrification agro chemicals effluent treatment fluidized bed reactor simultaneous nitrification and denitrification low temperature nitrification effluent treatment hospital wastewater treatment technologies stepfeed mlvss svi activated sludge chlorination ras filamentous growth mlss oxygen consumption energy efficiency sediment risk assessment sediment triad microtox solid phase test sediment reference sample toxicity metal speciation biomass injection cod reduction coke oven effluents phenols fixed film process sulfite pulp and paper mill effluent carriers pu sewage treatment anaerobic-aerobic petro chemicals industry high ammonia immobilization bio film
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