STUDY ON DIFFERENT FACTORS AFFECT COD REMOVAL CAPACITY OF HALANAEROBIUM LACRUISEI IN SALINE WASTEWATER
Keywords:Halanaerobium lacruisei, saline wastewater treatment, COD removal
This study evaluated a number of factors (including temperature, pH, salinity) affecting the growth of Halanaerobium lacruisei bacteria in order to reduce COD concentration in saline wastewater of a fish sauce processing plant. The results of the study showed that halophillic bacteria had good capacity of reducing COD concentration under specific conditions.Laboratory experiments with different bacterial culture conditions showed that 30°C, pH 7.0 and 6-7 % salinity is the optimal culturing condition for Halanaerobium lacruisei treating COD in wastewater. In the laboratory condition, COD treatment capacity in saline wastewater of this microorganism can be up to nearly 88% after 48 hours, ensuring that the effluent meets the environmental requirements. In pilot condition of culturing the bacteria (in plastic tank, stimulating the real condition), after 25 days, the COD removal decreased continously, 80% effectively compared with the inlet wastewater. The effluent treatment efficiency by a laboratory method meets the standard of type B wastewater specified in QCVN 40:2011/BTNMT. This study showed that Halanaerobium lacruisei can be usedeffectively to treat the COD parameter in saline wastewater which can be applied in industrial wastewater treatment area as well.
Le V.C. Xử lý nước thải thuỷ sản: Một số kinh nghiệm xây dựng và vận hành hệ thống trong thực tiễn. Báo cáo tại Hội nghị hoá học toàn quốc lần thứ IV (2003) (in Vietnamese).
Goswami, L.R. Kumar V., Borah S.N., Manikandan N.A., Pugazhenthi G. Membrane bioreactor and integrated membrane bioreactor systems for micropollutant removal from wastewater: A review. Journal of Water Process Engineering. 26 (2018) 314-328.
Luo Y., Guo W., Ngo H.H., Nghiem L.D., Hai F.D., Zhang J., Liang S., Wang X.C. A review on the occurrence of micropollutants in the aquatic environment and their fate and removal during wastewater treatment. Science of the Total Environment 473 (2014) 619–641.
Kapdan I.K., Erten B. Anaerobic treatment of saline wastewater by Halanaerobium lacusrosei. Process Biochemistry 42.3 (2007): 449-453.
Dincer A.R., Kargi F. Performance of rotating biological disc system treating saline wastewater. Process Biochemistry 36(8-9) (2001) 901-906.
Mosquera-Corral A. Simultaneous methanogenesis and denitrification of pretreated effluents from a fish canning industry. Water Research. 35(2) (2001) 411-418.
Oren A. (2010). Industrial and environmental applications of halophilic microorganisms. Environmental Technology. 31(8-9) (2010) 825-834.
Ahmet U., Kargı F. Salt inhibition on biological nutrient removal from saline wastewater in a sequencing batch reactor. Enzyme and Microbial Technology 34.3-4 (2004): 313-318.
Ganesh R., Balaji G., Ramanujam R.A. Biodegradation of tannery wastewater using sequencing batch reactor—respirometric assessment. Bioresource Technology. 97(15) (2006) 1815-1821.
Nguyen T.C., To T.D.H, Nguyen X.B., Dinh Q.H., Vu N.T., Bui N.H., Vu T.D., Nguyen K.A. Nghiên cứu sự ảnh hưởng của các yếu tố tới khả năng xử lý COD trong nước thải công nghiệp nhiễm mặn của vi khuẩn Halophilic sp. Tạp chí Khoa học và Công nghệ- ĐH Công nghiệp Hà Nội. 56(2) (2020), 121-125 (in Vietnamese).
APHA, AWWA, WEF - Standard Methods for the Examination of Water and Wastewater. 21st edition, Washington DC., USA, 2005, pp.1070-1072.
Tran M.C. Nghiên cứu ứng dụng công nghệ vi sinh để xử lý nước thải hữu cơ nhiễm mặn. Đề tài khoa học công nghệ cấp Viện Khoa học Công nghệ Quân sự (2015) (in Vietnamese).
Tran Q.T., Nguyen C.T., Pham H.G., Chan V.T. Ô nhiễm môi trường khu nuôi cá biển bằng lồng bè điển hình: trường hợp nghiên cứu tại Cát Bà–Hải Phòng. Tạp chí Khoa học và Công nghệ Biển. 14(3) (2014), 265-271 (in Vietnamese).
Judd S. The MBR Book: Principles and applications of membrane bioreactors for water and wastewater treatment (2010) Elsevier.
Ahsan S., Rahman M. A., Kaneco S., Katsumata H., Suzuki T., Ohta K. Effect of temperature on wastewater treatment with natural and waste materials. Clean Technologies and Environmental Policy. 7(3) (2005) 198-202.
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