@article { author = {}, title = {Assessment of Bio-Trickling Filter Startup forTreatment of Industrial Wastewater}, journal = {International Journal of Environmental Research}, volume = {9}, number = {2}, pages = {769-776}, year = {2015}, publisher = {University of Tehran/Springer}, issn = {1735-6865}, eissn = {2008-2304}, doi = {10.22059/ijer.2015.951}, abstract = {The aim of the present study was to assess the bio-trickling filter startup for the treatment ofwastewater produced by Pegah Dairy Company at psychrophilic condition. The startup time of a bio-tricklingfilter is directly proportional to the concentration of microbial population. Abio-trickling column with a height of150 cm was packed with lava rocks with the liquid recirculated through the packing. The startup flow rate for thepilot was 0.0035 L/min, with hydraulic retention time (HRT) of 10 days at 7-13ÂșC. Results indicated that for HRTof 10 days, the efficiency of chemical oxygen demand (COD) removal was more than 85% for less than 100 gCOD/m3/h. Subsequently, dairy wastewater was added to the reminder of activated sludge with the HRT of 8days, and the nutrients were added to the pilot tank with a daily ratio of carbon/nitrogen/phosphorous: 100/5/1.For the subsequent 5 days, the pilot was maintained in a steady state. The results revealed that the pilot startupwas performed completely.}, keywords = {Bio-degradation,Bio-trickling filter,Industrial wastewater,Lava rocks,Startup}, url = {https://ijer.ut.ac.ir/article_951.html}, eprint = {https://ijer.ut.ac.ir/article_951_93772fe1dc8653663dc120bc640f6f2e.pdf} }