tailieunhanh - Effect of organic loading rate on simultaneous removal of nitrogen and phosphorus from aquatic product processing wastewater by advanced A2/O – baf system

The results showed that the model not only treated organic matter well but also removed nearly completely both nitrogen and phosphorus. For loading rate of kgCOD/m3 /day, treatment efficiencies of COD, NH4 + -N, TN, TP of the model were the highest as , , , %, respectively and output values of these parameters were within the limits of QCVN 11:2008/BTNMT, column A. | Journal of Science and Technology 54 (4B) (2016) 200-207 EFFECT OF ORGANIC LOADING RATE ON SIMULTANEOUS REMOVAL OF NITROGEN AND PHOSPHORUS FROM AQUATIC PRODUCT PROCESSING WASTEWATER BY ADVANCED A2/O – BAF SYSTEM Nguyen Xuan Quynh Nhu1, *, Dang Viet Hung 2, Nguyen Thi Thanh Phuong1 1 Institute for Environment and Resources, VNU – Ho Chi Minh City, 142 To Hien Thanh St., Dist. 10, Hochiminh City 2 VNU-HCMC University of Technology, 268 Ly Thuong Kiet St., Dist. 10, Hochiminh City * Email: Received: 15 August 2016; Accepted for publication: 10 November 2016 ABSTRACT Combined system of Anaerobic/Anoxic/Oxic reactor with Biological Aerated Filter (A2/O – BAF) is used to enhance simultaneous removal of nitrogen and phosphorus on aquatic product processing wastewater treatment. A2/O reactor was operated with short solids retention time employed mainly for removal of organic matter and phosphorus together with denitrification and BAF with long solids retention time employed mainly for nitrification. The model of combined A2/O – BAF system made from polyacrylic with the capacity of liters was operated with hydraulic retention time decreased from to hours and organic loading rates increased from to kgCOD/m3/day. The results showed that the model not only treated organic matter well but also removed nearly completely both nitrogen and phosphorus. For loading rate of kgCOD/m3/day, treatment efficiencies of COD, NH4+-N, TN, TP of the model were the highest as , , , %, respectively and output values of these parameters were within the limits of QCVN 11:2008/BTNMT, column A. Keywords: combined A2/O – BAF system, aquatic product processing wastewater. 1. INTRODUCTION Wastewater with excessive nitrogen and phosphorus can result in serious environmental problems – eutrophication. To decrease such environmental pollution, the effluent requirement for nutrient discharges (especially for nitrogen and .

• Hoá học
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• Phosphorus from aquatic product processing wastewater
• Advanced A2 O – baf system
• Aquatic product processing wastewater
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