Research The Effect Of Shortcut Nitrification-Anammox In Treat Landfill Leachate Process By SBBR

This article introduced the origin of the leachate and water quality characteristics,piont out the endanger for environment,at first.It's simply related that actuality of the treatment and the existent deficiency,at the present time,biologic processes are dominating method for the leachate treatment,excepting the conventional method of nitrification and Denitrication, some late-model methods have been paid attention in these years,including simultaneous nitrification-denitrification (SND),shortcut nitrification-denitrification,anaerobic ammonia oxidation,et al.this article mainly studied the denitrogenation for leachate with shortcut nitrification-Anammox in sequencing biofilm batch reactor(SBBR).Because the method of partial nitritation and subsequent anaerobic ammonium oxidation included aerobic and anaerobic processes,it's important to control temporal distribute for aerobic and anaerobic.This experiment determined the concentration of NH₄⁺-N and NO₂^--N with different aerobic time,then found the optimal aerobic time by compareing.With our research,we found that NH₄⁺-N remove rate can stably reach 93.6%by 4h aerobic and 2h anaerobic,simultaneity,the concentration of the effluent's NO₂^--N is low too.The effect of treatment by this manner of provi- ding oxygen is obviously batter than other manners,so we thought it's best to taking this way.On this basis,we changed filling in two same reactors,and mai ntain other experiment condi- tions.Throught observing biologic membrane's configuration on the filling, and comparing the effect of treatment,we found that the adsorption capability of the sponge filling is better than the fibrous filling's,so the sponge filling is more suitable for using in SBBR.We also researched that the different influent bing the affect to the effect of treatment, found that if the influent change from high load to low,biologic membrane can't adapt in deficient time,resul- ting in obviously descending remove rate of nitrogen,and the content of COD is essential for the microorganism system's stabilization.When the influent changes,it's necessary for advisable adjustability,in order to stabilizing the reactor.As a new technique, partial nitrita- tion and subsequent anaerobic ammonium oxidation can save a mass of oxygen and carbon so it has a good foreground for application.