Comparison of Performance of Different Combined Processes for Treatment of Aged Landfill Leachate
The research object of this study was an aged landfill,for which the short-range nitrification SBR+anaerobic ammoxidation ASBR combined process and the short-range nitrification SBR+anaerobic ammoxidation biofilter combined process were compared in terms of their treatment effects on landfill leachate,so as to select a more suitable combined process.It is found that both systems can respond to leachate quality quickly.Among them,the combined technology of SBR and anaerobic ammoxidation ASBR can bear the maximum total nitrogen capacity burden,the value of which reaches 0.280 kgN·(m3·d)-1.In contrast,the SBR+anaerobic ammonium oxidation biofilter can handle a total nitrogen load of up to 0.550 kgN.·(m3·d)-1.This indicates that the integrated approach of short-range nitrification SBR+anaerobic ammonium oxidation biofilter has the potential to cope with higher workload and have stronger impact resistance to cope with large water quality changes.
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