Title :
Study on denitrification of aquaculture wastewater using immobilized microorganism technology
Author :
Lu, Xujie ; Zhou, Shili ; Liu, Qiongyu ; Liu, Junxia
Author_Institution :
Sch. of Chem. & Environ. Eng., Jianghan Univ., Wuhan, China
Abstract :
Nitrate contamination is becoming a widespread environmental problem. The application of immobilized microorganisms´ techniques to industry, especially in the biological wastewater systems and the production of metabolites, not only offers a high cell concentration in the reactor tank for increasing efficiency, but also facilitates the separation of liquid and solid in the settling tank. In this work, the applicability of cell immobilization to the aquaculture wastewater treatment process using the polyvinyl alcohol -boric acid (PVA-BA) method was investigated. The experimental results showed the denitrification efficiency of the aquaculture wastewater was over 80% under the conditions of hydraulic retention time =12h, pH=6.8, T=20-25°C, origin ammonia concentration =100mg/L.
Keywords :
aquaculture; microorganisms; wastewater; wastewater treatment; ammonia concentration; aquaculture wastewater treatment process; biological wastewater system; cell concentration; cell immobilization; denitrification efficiency; hydraulic retention time; immobilized microorganism technique; immobilized microorganism technology; metabolites; nitrate contamination; polyvinyl alcohol-boric acid method; reactor tank; temperature 20 C to 25 C; widespread environmental problem; Aquaculture; Chemicals; Inductors; Microorganisms; Nitrogen; Production; Wastewater; ammonia; aquaculture wastewater; denitrification; immobilized microorganisms; polyvinyl alcohol;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5893221
