Optimization of a Microbial Formulation Acclimated for Pilot-Scale Biodegradation of Paper Mill Effluent

BioResources

Felipa de Jesus Rodriguez-Flores¹  Sergio Valle-Cervantes¹  Luis Alberto Ordaz-Díaz²  Juan Antonio Rojas-Contreras³  Ana María Bailón-Salas³ 

[1] Mexico;Technological Institute of Durango and Polytechnic University of Durango;Technological Institute of Durango;

关键词: Optimization;    Pilot scale;    Model;    Pulp and paper;    Real conditions;    Effluent;    Lagoon;    Microbial;   

DOI  :  10.15376/biores.11.1.1071-1079

来源: DOAJ

【 摘 要 】

A pilot-scale aerated lagoon was used for the aerobic treatment of pulp and paper mill effluent from September 1 to December 1, 2014. The aerated lagoon was installed at the chemistry laboratory in the Chemical Engineering Department at the Durango Institute of Technology and was fed with real pulp and paper mill effluent. The experimental work was run under various operating conditions. The operating parameters (total and volatile suspended solids (VSS) and dissolved oxygen concentration (DO)) and environmental variables (temperature, pH, COD, and BOD5 of influent water) were monitored daily. In all the experiments conducted, the aerated lagoon generated an effluent of optimal quality complying with the requirements of SEMARNAT (2003) and CONAGUA (2003). A model that explains the behavior of the system under realistic operating conditions was obtained. The model indicated an optimal DO of approximately 4 mg/L for concentrations up to 1000 mg/L, showing variations in concentrations above this value. This data indicate that the flexibility of the bacterial formulation and its ability to adapt to environmental changes play an important role in the stability of an aerated lagoon.

【 授权许可】

Unknown