Determination of kinetic parameters of an upflow anaerobic sludge blanket reactor (uasb), treating swine wastewater

Ciência e Agrotecnologia

Mario Tauzene Afonso Matangue¹  Claudio Milton Montenegro Campos² 

[1] ,Federal University of Lavras Department Engineering Lavras MG ,Brazil

关键词: Swine wastewater;    kinetic;    UASB reactor;    Águas residuárias de suínos;    cinética;    reator UASB;   

DOI  :  10.1590/S1413-70542011000600022

来源: SciELO

【 摘 要 】

This research aimed to estimate the kinetic parameters of a UASB reactor treating swine wastewater from farming. The system consisted of: a degritter with a triangular-notch weir in order to measure the flow; a static sieve; an acidification/equalization tank (AET); ABR and UASB reactors; a settling tank; two infiltration ponds and a greenhouse for fertirrigation. The hydraulic retention times (HRT) adopted for the UASB reactor, were: 8.0; 9.6; 8.4; 6.0 and 4.8 hours. The operational temperature was 23.4º C±1.5º C. The analyzed physical-chemical parameters were temperature COD (total and filtered), BOD (total and filtered), total volatile solids (affluent, effluent and of the reactor's profile sludge), flow rate and nutrients (N and P). The kinetic coefficients estimated were: growth coefficient Y=0.091 mg tCOD mg TVS-1.d-1, decay coefficient Kd=0.01 d-1; concentration of limiting substrate Ks=282.5 tCOD mg L-1 and maximum growth rate µmax= 0.051 d-1. For data validation, simple linear regression models were applied and their interaction verified with a "t" test. The results matched with the those found in other references for the same type of kinetic studies.

【 授权许可】

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