Kinetics of a fixed bed reactor with immobilized microorganisms for the removal of organic matter and phosphorous

• Published in: Water environment research 2020-11, Vol.92 (11), p.1956-1965
• Main Authors: Bustos‐Terrones, Yaneth A., Estrada‐Vázquez, Rogelio, Ramírez‐Pereda, Blenda, Bustos‐Terrones, Victoria, Rangel‐Peraza, Jesús Gabriel
• Format: Article
• Language: English
• Subjects: Activated carbon; Alginic acid; Anthracite; Biodegradation; Chemical oxygen demand; Contaminants; Domestic wastewater; fixed bed reactor; Fixed bed reactors; Fixed beds; Gels; immobilized microorganisms; Ions; Kinetics; Microorganisms; Nutrients; Organic matter; Particulate matter; Phosphorus; Pretreatment; Pretreatment of water; Reactors; Removal; Scaling; Seaweed meal; Sodium; Sodium alginate; Suspended particulate matter; Wastewater pollution; Wastewater treatment; Zeolites
• ISSN: 1061-4303; 1554-7531
• DOI: 10.1002/wer.1353

The biodegradation of domestic wastewater contaminants has been carried out using microorganisms immobilized in sodium alginate gel (Alg‐Na). A fixed bed reactor with immobilized microorganisms was used for the treatment of domestic wastewater. A wastewater pretreatment was carried out to remove the larger particulate matter, which consisted of a reactor packed with different materials (anthracite, zeolite, and activated carbon). Later, a second reactor packed with balls with immobilized microorganisms was used to eliminate organic matter and nutrients. 2.5% w/v of Alg‐Na was used as a support to immobilize the microorganisms. According to the results, a total phosphorus (TP) and chemical oxygen demand (COD) removal of 94.26% and 78.25% was obtained, respectively. In addition, the degradation rate for both organic matter and phosphorous was studied by using the kinetic model for fix bed reactor. © 2020 Water Environment Federation Practitioner points Phosphorous and organic matter removal by adsorption and immobilized microorganisms. High removal efficiency of phosphorous and organic matter was found. An innovative wastewater treatment alternative is proposed. Kinetic model for fixed bed reactor is also proposed for scaling‐up purposes. Removal of organic matter and phosphorous by using immobilized microorganisms.