TAILIEUCHUNG - Integration of nitrification with denitrification for water treatment

The study was conducted by an experiment at the lab-scale focused on the integration of a nitrification system with a denitrification system to remove ammonia and other nitrogen compounds in treatment surface water and groundwater. | BÀI BÁO KHOA H C INTEGRATION OF NITRIFICATION WITH DENITRIFICATION FOR WATER TREATMENT Luong Van Anh1, Nguyen Thuy Linh1, Duc Toan Do2 Abstract: With poor water catchment protection, surface water and groundwater sources can be polluted by many substances, of which, ammonia is one of the primary factors. While conventional methods for ammonia treatment using chlorine present limitations during treatment processes, biological treatment solutions are highly appropriate in efficiently removing contaminants such as ammonia. The study was conducted by an experiment at the lab-scale focused on the integration of a nitrification system with a denitrification system to remove ammonia and other nitrogen compounds in treatment surface water and groundwater. The results revealed that the nitrification system with hydraulic rate of L min-1 can remove 83 mg NH4-N day-1 with m2 of polypropylene media. It corresponds to 17 mg NH4-N m-2 day-1 of ammonium nitrogen surface load. Meanwhile, 716 mg NO3-N day-1 was eliminated by the denitrification system with hydraulic rate of 42 ml min-1. Keywords: Nitrogen, ammonia, nitrification, denitrification, barley straw. 1. INTRODUCTION1 With the expanse of major cities led by the population boom over the world and poor water catchment protection, water sources including both surface water and groundwater have been affected by a deterioration of both quantity and quality. Human activities in catchment areas are believed to be a main reason for these issues (Henry & Heineke 1996). Surface water and groundwater sources can be polluted by many substances, of which ammonia is one of the primary factors. The ammonia content in these water sources varies from over 0 mg NH4+ L-1 to 25 mg NH4+ L-1 (Angelopoulos et al. 2009). The low concentration of ammonium nitrogen (under 5 mg NH4+ L-1) has been recorded in a number of sources. Ammonia seriously influences chlorine disinfection processes which is an important stage in drinking water .

• Môi trường
• Integration of nitrification with denitrification
• Nitrification with denitrification
• Water treatment
• Barley straw
• Wheat and barley straw
• Barley straw for production
• Production of mushrooms
• Barley straw for production of mushrooms
• Ready to eat food
• Grain yield
• Nitrogen and rice straw incorporation
• Barley (Hordeum vulgare L
• Rice straw incorporation
• Different nitrogen level
• Straw yield
• Nitrogen on growth of barley
• Yield of barley
• Different sources of nitrogen
• Beverage industry effluent
• Fresh water
• Lower grain and straw yield
• Beverage industry effluent irrigation