Nitrogen Removal in a Full-Scale Domestic Wastewater Treatment Plant with Activated Sludge and Trickling Filter

作者: Davood Nourmohammadi , Mir-Bager Esmaeeli , Hossein Akbarian , Mohammad Ghasemian

DOI: 10.1155/2013/504705

关键词:

摘要: During the last decade, more stringent effluent requirements concerning nutrients values have been imposed by legislation and social concern. In this study, efficiency of total nitrogen removal in activated sludge trickling filter processes (AS/TF) was investigated Tehran North wastewater treatment plant. Biological system site included, anoxic selector tank, aeration final sedimentation, filter. A part treated before chlorination mixed with supernatant dewatered fed to Supernatant high concentration NH4-N diluted provide complete nitrification Produced nitrate arrived tank converted gas denitrification. According study result, low organic carbone led TF, then denitrification occurred area. decreased from 26.8 mg/L 0.29 mg/L NO3-N increased 8.8 mg/L 27 mg/L TF. Consequently, approximately 50% biological process. This has observed returned flow around 24% sedimentation into It concluded that, comparison nutrient processes, process is very efficient simple.

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