Experimental Study Of The Suspended Filler Sbr Process Of Phenolic Wastewater

A new type of nanometer suspended fillings was applied in this experiment. Itcould be used in traditional SBR reactor to treat phenolic wastewater. The rule. ofbio-membrane and microorganism were studied. Organics and ammonia in suspendedfilling SBR were researched compared with these in traditional SBR. The rule ofphenol degradation and the highest phenol concentration were studied when theorganics and ammonia could not be degradable. This was the endurance whichmicroorganism can live in normal condition. The dynamic analysis of organicsdegradation was researched in suspended filling SBR. The studies would betheoretical meanings about bio-treatment in phenolic wastewater field.In the experiment it was attracted attention about the membrane growth process andthe biomass were examined successively. In stationary phase the biomass could be upto 5.5g/L (volume was according to suspended filling) in this kind of filling. Thebio-membrane's activity was not grown very quickly with the growth of organic load.The SOUR was be maintained with 0.3-0.5 mg (O₂)/g (MLSS)·min^-1. The bestputting rate about the suspended filling was 20% by oxygenating experiment.The COD_cr degradation rate could be over 83% with the phenol concentration from0 to 80mg/L, while the CODcr degradation rate was 54.4% with the phenolconcentration 120mg/L, the effect of COD_cr degradation was worse, and was provedthat the highest concentration of phenol was 120mg/L when organics could bedecomposed in suspended filling SBR at the reaction condition of influent COD_crconcentration 440-487.7mg/L, ammonia 61.4-66.5mg/L, aerating 8h, 20℃,pH7.5-8.5. And also, The ammonia degradation rate could be over 75% with the phenolconcentration from 0 to 40mg/L, while the ammonia degradation rate was 52.4% withthe phenol concentration 80mg/L, the effect of ammonia degradation was worse, andwas proved that the highest concentration of phenol was 80mg/L when ammoniacould be decomposed in suspended filling SBR at the former conditions.The COD_cr degradation rate could be over 90% with the phenol concentration from0 to 40mg/L, while the COD_cr degradation rate was 70.1% with the phenolconcentration 60mg/L, the effect of COD_cr degradation was worse, and was provedthat the highest concentration of phenol was 60mg/L when organics could bedecomposed in traditional SBR at the former condition. The ammonia degradationrate could be 80% with the phenol concentration from 0 to 20mg/L, while theammonia degradation rate was 59.7% with the phenol concentration 40mg/L, theeffect of ammonia degradation was worse, and was proved that the highest concentration of phenol was 40mg/L when ammonia could be decomposed intraditional SBR at the former condition except for the average influent ammoniaconcentration of 47mg/L. the experiment was proved that the suspended filling couldameliorate the effect of traditional SBR and increasing microorganism account, thusthe organics and ammonia in the active sludge could be treated better.The higher phenol concentration was, the worse the sludge sedimentation behaviorwas done at the phenol concentration 40-80mg/L. and it was proved that it was notgood reflect on the sludge sedimentation with phenol.The reaction rate constant K₁ was let up with influent phenol concentrationincreasing from 20mg/L to 80mg/L; the organics degradation was according toprimary dynamic equation in the condition of pH from 4.8 to 9.1; the K₁ was grownwith the temperature from 15℃to 30℃, and the relationship of the reaction rateconstant K₁ and temperature was proved that K_1(T)=0.0001108×1.0065^(T-10)...