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Assessment of Bio-Trickling Filter Startup forTreatment of Industrial Wastewater | ||
| International Journal of Environmental Research | ||
| مقاله 39، دوره 9، شماره 2، تیر 2015، صفحه 769-776 اصل مقاله (298.28 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijer.2015.951 | ||
| چکیده | ||
| The aim of the present study was to assess the bio-trickling filter startup for the treatment of wastewater produced by Pegah Dairy Company at psychrophilic condition. The startup time of a bio-trickling filter is directly proportional to the concentration of microbial population. Abio-trickling column with a height of 150 cm was packed with lava rocks with the liquid recirculated through the packing. The startup flow rate for the pilot was 0.0035 L/min, with hydraulic retention time (HRT) of 10 days at 7-13ºC. Results indicated that for HRT of 10 days, the efficiency of chemical oxygen demand (COD) removal was more than 85% for less than 100 g COD/m3/h. Subsequently, dairy wastewater was added to the reminder of activated sludge with the HRT of 8 days, 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 startup was performed completely. | ||
| کلیدواژه‌ها | ||
| Bio-degradation؛ Bio-trickling filter؛ Industrial wastewater؛ Lava rocks؛ Startup | ||
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آمار تعداد مشاهده مقاله: 2,407 تعداد دریافت فایل اصل مقاله: 4,429 |
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