Due to the potential of sewage to contaminate food and water resources, it is emphasized on the treatment of sewage. One of the most effective biological methods in the treatment of sewage is the use of plants. A group of these plants, which have recently been considered by researchers to treat sewage, are microalgae. Microalgae use sunlight to absorb nutrients from the sewage and make them more useful to biosphere. In this study, the possibility of removal of some pollutant parameters of wastewater was investigated using microalgae Chlorella vulgaris. For this purpose, microalgae was cultured in TMRL medium and the wastewater was prepared from the fish farming pool in Khuzestan province. The growth of microalgae in control and wastewater treatment was measured every 48 hours, under constant conditions (temperature 27-23 ° C, 20ppt salinity, 2500 lux light intensity) in the period of 15 days. COD, BOD, nitrate, nitrite and phosphate were measured and calculated every 48 hours. The results of statistical analysis showed a significant change in the number of microalgae in the control treatment, so that the highest number of algae was observed on the 11th day but it decreased relative to the 14th day. Also, the results showed a significant difference in the amount of BOD and COD removal was micro-algae culture, with the lowest amount of these two factors observed on the tenth day. The remaining nitrate also received the highest and lowest values on the third and tenth day, respectively. Nitrite was also the highest on the third day and on the 15th day it was the lowest.Phosphate levels also decreased significantly on days 3, 5, 10 and 15 compared to the first day (P <0.05). These results showed the ability of microalgae to reduce wastewater nitrogen and phosphorus and its potential for wastewater treatment. It seems that this microalgae is capable of removing nitrates and phosphates as well as the production of algal biomass in refining systems the effluent of the fish ponds is to be used before entering the natural environment, and the pool effluent can be used as a suitable fertile environment for mass production of this algae.
Abe, K.; Imamaki, A. and Morio., H., 2002. Removal of nitrate, nitrite, ammonium and phosphate ions from water by the aerial microalga Trentepohlia aurea. Journal of applied phycology. Vol. 14, No. 2, pp: 129-134.
APHA. 1995. Standard methods for the examination of water and wastewater 19th edition. American Public Health Association. pp: 83-113.
Arbib, Z.; Ruiz, J.; Alvarez, P.; Garrido, C.; Barragan, J. and Perales, J.A., 2012. Chlorella stigmatophora for urban wastewater nutrient removal and CO2 abatement. International Journal of Phytoremediation. Vol. 14, No. 7, pp: 714-725.
De-bashan, L.E.; Moreno, M.; Hernandez, J.P. and Bashan, Y., 2002. Removal of ammonium and phosphorus ions from synthetic wastewater by the microalgae Chlorella vulgaris coimmobilized in alginate beads with the microalgae growth-promoting bacterium Azospirillum brasilense. Journal of Water Research. Vol. 36, No. 12, pp: 2941-2948.
kim, J.; Lingaraju, B.; Rheaume, R.; Lee, J. and Siddiqui, K., 2010. Removal of Ammonia from Wastewater Effluent by Chlorella Vulgaris. Tsinghua science and Thechnolgy. Vol. 14, No. 4, pp: 391-396.
Lee, K. and Lee, C.G., 2001. Effect of light/dark cycles on wastewater treatments by microalgae. Biotechnology and Bioprocess Engineering. Vol. 6, pp: 194-199.
Martinez, M.E.; Sanchez, S.; Jimenez, J.M.; Yoysfi, F.E. and Munoz, L., 2000. Nitrogen and phosphorus removal from urban wastewater by the microalga Scenedesmus obliquus. Bioresource Technology. Vol. 73, pp: 263-272.
Munoz, P. and Guieysse, B., 2006. Algalbacterial processes for the treatment of hazardous contaminants: a review. Water research. Vol. 40, pp: 2799-2815.
Ravipratap, S.; Rohan, B. and Sibi, G., 2017. Nurennt Removal Efficiencies of Chlorella vulgaris from urban Wastewater for Reduced Eutrophication. Journal of Environmental Protection. Vol. 8, No. 1, pp: 1-11.
Rawat, I.; Kumar, R.R.; Mutanda, T. and Bux, F., 2011. Dual role of microalgae: Phycoremediation of domestic wastewater and biomass production for sustainable biofuels production. Appl. Energy. Vol. 88, No. 10, pp: 3411-3424.
Tam, N.F.Y. and Wong, Y.S., 1996. Effect of ammonia concentrations on growth of Chlorella vulgaris and nitrogen removal from media. Bioresource Technology. Vol. 57, pp: 59-66.
azarm, L., Javadzadeh, N., & Jalilzadeh, R. (2020). Investigation of Chlorella vulgaris capacity in absorption of Nitrate and Phosphate from wastewater of fish farming pool in Khuzestan Province. Journal of Animal Environment, 12(2), 291-298. doi: 10.22034/aej.2020.107264
MLA
laleh azarm; Narges Javadzadeh; Reza Jalilzadeh. "Investigation of Chlorella vulgaris capacity in absorption of Nitrate and Phosphate from wastewater of fish farming pool in Khuzestan Province". Journal of Animal Environment, 12, 2, 2020, 291-298. doi: 10.22034/aej.2020.107264
HARVARD
azarm, L., Javadzadeh, N., Jalilzadeh, R. (2020). 'Investigation of Chlorella vulgaris capacity in absorption of Nitrate and Phosphate from wastewater of fish farming pool in Khuzestan Province', Journal of Animal Environment, 12(2), pp. 291-298. doi: 10.22034/aej.2020.107264
VANCOUVER
azarm, L., Javadzadeh, N., Jalilzadeh, R. Investigation of Chlorella vulgaris capacity in absorption of Nitrate and Phosphate from wastewater of fish farming pool in Khuzestan Province. Journal of Animal Environment, 2020; 12(2): 291-298. doi: 10.22034/aej.2020.107264
)
