TAILIEUCHUNG - Removal of cod and ammonium from landfill leachate by using a modified eco-bio-block material in anoxic oxic system

The research on removal efficiencies of COD and NH4 + in landfill leachate by an application of the modified Eco - Bio -Block (EBB) material in Anoxic-Oxic (A-O) system was conducted in the laboratory scale. | Journal of Science and Technology 54 (2A) (2016) 1-5 REMOVAL OF COD AND AMMONIUM FROM LANDFILL LEACHATE BY USING A MODIFIED ECO - BIO – BLOCK MATERIAL IN ANOXIC-OXIC SYSTEM Hoang Luong*, Trinh Van Tuyen, Tang Thi Chinh, Dang Thanh Tu Institute of Environmental Technology, VAST, 18 Hoang Quoc Viet Road, Hanoi, Vietnam Email: independenthanoivn@ Received: 1 April 2016; Accepted for publication: 15 June 2016 ABSTRACT The research on removal efficiencies of COD and NH4+ in landfill leachate by an application of the modified Eco - Bio -Block (EBB) material in Anoxic-Oxic (A-O) system was conducted in the laboratory scale. The experimental results showed that the treatment efficiencies of COD and NH4+ were relatively high. Removal efficiencies of COD and NH4+ in two columns (anoxic and oxic) were 35% and 50%, respectively, after 19-hour in the experimental system at the flow rate of 1 liter per hour. The results of this study might suggest technical solutions toward landfill leachate treatment at the low cost. Moreover, this method could be widely applied to other wastewater sources suitable in the condition of Vietnam. Keywords: Eco - Bio - Block, Modified EBB, Bacillus natto, A-O system. 1. INTRODUCTION Currently, the leachate from the landfill site is an alarming issue in the big cities in Vietnam. Although many researches and applications were carried out to deal with the landfill leachate most of treatment plants did not met the environmental emission standard of Vietnam (type B for the target COD and ammonium in QCVN 25-2009/BTNMT that are lower 300 mg/L and 25 mg/L, respectively, after discharge). The main reasons for low treatment efficiency are the high content of persistent organic matter that is slowly biodegradable and the high loading of total nitrogen in the landfill leachate. Consequently, COD and total nitrogen content of the landfill leachate after biological treatment are often from 400 to 500 mg/L (mostly calcitrant COD) and approximately 100

• Hoá học
• Journal of Science and Technology
• Cod and ammonium from landfill leachate
• Cod and ammonium
• Modified eco bio block material
• Eco Bio Block
• Journal of Marine science and Technology
• Marine science and Technology
• Marine science and Technology no 56
• Marine science and Technology year 2018
• Evaluation method
• Electrical energy management model
• Marine science and Technology no 53
• Diesel engines
• Journal of Fisheries science and Technology
• Fisheries science and Technology
• Fisheries science and Technology no 3
• Fisheries science and Technology year 2016
• Striped catfish
• Common carp cyprinus carpio
• Fisheries science and Technology no 4
• Fisheries science and Technology year 2018
• Coastal fi shing activities
• White striped cleaner shrimp
• Journal of Science
• Journal of Technology
• Technology Management
• Science and Technology
• International integration
• Science and Technology Strategy
• Evaluation of science and technology
• Global journal of computer science
• Global journal of computer science and technology
• Information & technology
• GIS based fire emergency response system
• Marine science and technology no 61
• Actual GPS receivers
• Display information on stability
• Nuclear science and technology
• The journal of Nuclear science and technology
• Rotary rack served for elemental concentration
• Seawaterusing co precipitation method
• Natural radionuclides
• Experimental data
• Low energy experiments
• Multigroup cross sections
• Stable isotopic values
• Radial blanket
• Dissolved nitrogen compounds
• Irradiation channels
• Neutron rich nuclei
• Prescila neutron probe
• Full core conversion
• Multipurpose research reactor
• Aquatic environment
• Geochemical parameters
• External reactor vessel cooling method
• Radiation crosslinked scaffolds
• Adipose derived stem cell culture
• Treatment plans
• Minor actinide compositions
• IM NAA of non standard geometrical samples
• Cross shaped obstacle
• University entrepreneurship
• Entrepreneurial research university
• Technology innovation
• Industry university cooperation
• Regional innovation
• Journal of technology and science education
• Bring science and technology closer to secondary school
• Technology closer to secondary school
• Secondary school teachers
• Face to face
• Technology development
• Technology commercialization
• The role of informal science centers in science education
• Informal science center
• Attudes toward science
• Scientfic thinking skills
• Scientific research
• Research quality
• Strategy and policy
• Research Organizations
• Policy Planning
• Science and Technology development
• Theory Z
• Human Resources
• Development policy of Japan
• ‘Standards’ on the bench
• Technological literacy render an adequate image of technology
• Adequate image of technology
• Standards for technological literacy
• Philosophy of technology
• The nature of technology
• Concepts of technology
• Post secondary project based learning in science
• Post secondary project based learning in technology
• Post secondary project based learning in engineering and mathematics
• Post secondary project