Combined treatment of landfill leachate with fecal supernatant in sequencing batch reactor

Abstract

Abstract:A laboratory-scale sequencing batch reactor (SBR) is used to treat landfill leachate containing high concentration of ammonium nitrogen with municipal fecal supernatant. The SBR system is operated in the following sequential phases: fill period, anoxic period, aeration period, settling period, decant and idle period. The results indicated that the average removal efficiencies of COD, BOD 5 , TN, Highly effective simultaneous nitrification and denitrification was achieved in the SBR system. The ratio of nitrification and denitrification was 99% and 84%, respectively. There was partial 2 NO − denitrification in the system.

Determination of Sequencing Batch Reactor (SBR) Performance in Treatment of Composting Plant Leachate

“…Their results indicated that the average removal efficiency of TKN was 85%. They also found that there is a stable simultaneous nitrification and denitrification in this system (14). In some cases, the removal percentages obtained in this study were in agreement with the results obtained in some studies, while they were in contrast to some others.…”

“…The F/M ratio which was 0. 5 and COD were 98% and 94%, respectively (14). While in our study, the average removal efficiencies of BOD 5 and COD were lower due to the presence of interfering matters in the leachate such as nitrogen compounds, volatile fatty acids, heavy metals, ammonium, toxic, and pharmaceutical substances which inhibit biological activity.…”

“…One of the most common modified conventional activated sludge processes is biological sequencing batch reactor (SBR). This system is used for treatment of municipal and industrial wastewater as well as leachate (12)(13)(14). The SBR process includes 5 steps: filling, reaction (aeration), sedimentation, discharge, and rest.…”

“…All of these steps are done in one reactor with a discontinuous input flow (10,13,15). gen in landfill leachate treated by SBR (14). A study conducted by Hajiabadi et al showed that COD removal efficiency was above 97% for strong synthetic wastewater using SBR (17).…”

Biodegradability of leachates from Chinese and German municipal solid waste

“…SBR processes were investigated for biological treatment of different types of wastewater, like municipal wastewater (Irvine et al, 1983), hazardous wastewater (Herzbrunn et al, 1985), leachate from older and younger landfill sites (Manoharan et al, 1992;Kulikowska and Klimiuk, 2003;Klimiuk and Kulikowska, 2005;Zhou et al, 2006), and industrial wastewater e.g. from textile processing industry (Hemmi et al, 1999).…”