Abstract
Municipal landfill leachate is a high strength wastewater characterized by high concentrations of organics and ammonia and potentially containing toxic materials. The paper reports the results of a laboratory scale investigation aimed at evaluating the effectiveness of mature municipal landfill leachate treatment by a biological stage (used SBBR as a biological treatment) to study the nitrogen removal capabilities for treatment of sanitary landfill leachate containing high ammonia concentration. The monitored sample taken from the Chang Sheng bridge landfill site in Chongqing city-China, has its concentrations of COD, BOD5 and NH3-N about 1650, 75 and 1100 mg L-1 respectively. The results showed that after two months long period of domestication and one month period of stability, the ammonia nitrogen removal efficiency reached to 99% in the SBBR reactor, at nitrogen loading rate 0.51 kg TN m-3 per day and HRT was 9 hrs, met to Chinese standards for discharge.
Highlights
Sanitary landfills have been suggested to be the most economical and environmentally acceptable method for disposal of municipal solid wastes
The Sequencing batch biofilm reactor (SBBR) process strategy is characterized by a controlled periodic change of process conditions such as concentration of oxygen and other biological reactants
The Sequencing batch biofilm reactor (SBBR) is used to biologically treat wastewater containing volatile waste components, dilute solutions or those requiring maintenance of slow growing consortium[9]. The objective of this investigation is to study of using the SBBR system to remove the ammonia as a biological treatment of landfill leachate and to meet with standards
Summary
Sanitary landfills have been suggested to be the most economical and environmentally acceptable method for disposal of municipal solid wastes. The SBBR (sequencing Batch Biofilm Reactor) process strategy is characterized by a controlled periodic change of process conditions such as concentration of oxygen and other biological reactants (e.g., substrate and inorganic nutrients) These environmental conditions are controlled using fill and draw operations at distinct time intervals. The Sequencing batch biofilm reactor (SBBR) is used to biologically treat wastewater containing volatile waste components, dilute solutions or those requiring maintenance of slow growing consortium[9]. The objective of this investigation is to study of using the SBBR system to remove the ammonia as a biological treatment of landfill leachate and to meet with standards
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