The Study On Microbial Agent IBC Strengthen SBR Treatment System

With the development of economy, wastewater has been increasing year by year. It isvery important to improve the efficiency of wastewater treatment to reduce the total amountof emissions. Study on strengthening biological wastewater treatment systems has becomethe hot spot of environmental research in the field. Microbial agent IBC was used forexperimental study on strengthening the SBR treatment system. The purpose of theexperiment was to get the role of law and the mechanism about Microbial agent IBCStrengthen the SBR treatment system. The experimental group was the one added microbialagent IBC, and the control group was the one not added. The processing efficiency of the SBRsystem, activated sludge properties, the activity of activated sludge, and microbial communitydiversity in the experiment were studied through Contrast experiment.The experimental results showed that, compared to the control group, addition ofmicrobial agent IBC made CODCr, ammonia nitrogen and total phosphorus removal efficiencyof the experimental group eventually respectively be increased by8.54%,14.87%and15.90%and respectively reached to88.19%,85.47%and65.42%. MLVSS/MLSS of the experimentalgroup finally also was increased by about17.68%and reached to0.7474. There was nodifference in the sludge settling property with them, and they were both about70mL/g. Thematrix degradation rate of experimental group was increased through addition of microbialagent IBC. Compared with the control group, degradation rate of CODCrin experimentalgroup was increased by about9.82%at the stage of adsorption degradation. And degradationrate of ammonia in experimental group was increased by about24.87%at the stage of zeroorder reaction. The addition of microbial agent IBC made the activity of activated sludge beincreased too and the SOUR increased by about19.10%in the experimental group than thecontrol group. It was showed that the metabolic stage of exogenous respiration was extendedto60mins with the addition of microbial agent IBC at process variations of OUR, SOURduring aeration reaction.As the experiment continued, the SBR system operating conditions of the experimentalgroup gradually was better than the control group. The SBI index of the experimental groupfinally increased to10and that of the control group was7. Biolog experiments showed themicrobial activity and the metabolic capacity of the carbon source were improved afteraddition of microbial agent IBC. Specially, the amout and activity of microorganisms in theexperimental group significantly were higher than in the control group which can degradecarbohydrates, amino acids, polymer, phenolic acids and amines. It enhanced the richness, uniformity and dominance of the microbial community in the experimental group with theaddition of microbial agent IBC and it made the microbial ecology system more stable.Principal component analysis of Biolog datas showed obvious differences between theexperimental group and the control group that the microorganism in the microbialcommunity structures mainly can degrade carbohydrates, polymer, phenolic acids and amines.Cluster analysis showed that it formed a new stable ecological structure of the microbialcommunity through adding microbial agents IBC.