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TECHNOLOGY AND EFFICIENCY OF BIOLOGICAL TREATMENT OF POULTRY WASTEWATER USING THE AQUATIC MACROPHYTE AZOLLA CAROLINIANA

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ARTICLE ANNOTATION

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Abstract. Introduction. The increasing volume of wastewater and solid waste generated by poultry farms, along with the presence of high concentrations of organic matter, ammonia, nitrate, phosphate, fats, feed residues, and microorganisms, poses a serious threat to water resources and the environment, highlighting the scientific relevance of this issue. Methods and Materials. In this study, wastewater samples collected from a poultry production facility in Tashkent region were selected as the main research object. The concentrations of pollutants (organic compounds, ammonia, nitrate, phosphate, and others) were analyzed under laboratory conditions using standard analytical methods. Results. The results demonstrate that the aquatic plant Azolla caroliniana is capable of reducing ammonia, nitrate, and phosphate concentrations in wastewater by up to 80%, as well as lowering biochemical oxygen demand (BOD) and chemical oxygen demand (COD) by 75–80%. During the biological treatment process, Azolla releases oxygen through photosynthesis, thereby enhancing the activity of aerobic bacteria and contributing to the restoration of natural aquatic balance. Conclusion. The Azolla biomass produced during wastewater treatment can be reused as biofertilizer (vermicompost) or as a feed supplement. This method is environmentally safe, economically efficient, and highly suitable for application under the conditions of Uzbekistan.

AUTHORS

D.Mirzayeva

Islom Karimov nomidagi Toshkent davlat texnika universiteti

X.Sagdiyev

Qarshi davlat texnika universiteti

M.Razikova

Islom Karimov nomidagi Toshkent davlat texnika universiteti

O.Sabirova

Islom Karimov nomidagi Toshkent davlat texnika universiteti

Tags

# сточные воды# wastewater# oqova suv# биологическая очистка# птицеводство# biological treatment# Parrandachilik# биогенные элементы# biogenic elements# bioremediation# биоремедиация# Poultry farming# Azolla caroliniana# biologik tozalash# biogen elementlar# bioremediasiya

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References

[1]. Singh, R., Kumar, P., & Sharma, R. (2020). Role of aquatic macrophytes in wastewater treatment: A review on recent developments. Environmental Technology & Innovation, 18, 100684.

[2]. Prasanna, R., Kaushik, B. D., & Singh, P. K. (2018). Potential of Azolla-Anabaena system in water remediation and nutrient recovery. Journal of Environmental Biology, 39(2), 145–152.

[3]. Kaur, M., & Singh, J. (2021). Phytoremediation potential of Azolla caroliniana for nutrient removal from domestic wastewater. Ecological Engineering, 165, 106229.

[4]. Wagner, G. M. (1997). Azolla: A review on its biology and utilization. Botanical Review, 63(1), 1–26.

[5]. Rai, P. K., Tripathi, B. D., & Upadhyay, A. K. (2019). Phytoremediation of wastewater through aquatic macrophytes: Recent developments. International Journal of Phytoremediation, 21(7), 685–700.

[6]. Reddy, K. R. (1983). Nutrient removal potential of Azolla in wastewater treatment. Water Research, 17(8), 1213–1217.

[7]. Lumpkin, T. A., & Plucknett, D. L. (1980). Azolla as a green manure: Use and management in crop production. Westview Press, Boulder, Colorado.

[8]. Saha, A. K., & Gupta, S. K. (2022). Evaluation of Azolla-based biological wastewater treatment systems for nutrient and pollutant removal. Applied Water Science, 12(3), 76–89.

[9]. O‘zbekiston Respublikasi “Yashil iqtisodiyotga o‘tish strategiyasi 2030” (tasdiqlangan 04.10.2019-yil, PQ–4477-son Qaror).

[1]. Singh, R., Kumar, P., & Sharma, R. (2020). Role of aquatic macrophytes in wastewater treatment: A review on recent developments. Environmental Technology & Innovation, 18, 100684.

[2]. Prasanna, R., Kaushik, B. D., & Singh, P. K. (2018). Potential of Azolla-Anabaena system in water remediation and nutrient recovery. Journal of Environmental Biology, 39(2), 145–152.

[3]. Kaur, M., & Singh, J. (2021). Phytoremediation potential of Azolla caroliniana for nutrient removal from domestic wastewater. Ecological Engineering, 165, 106229.

[4]. Wagner, G. M. (1997). Azolla: A review on its biology and utilization. Botanical Review, 63(1), 1–26.

[5]. Rai, P. K., Tripathi, B. D., & Upadhyay, A. K. (2019). Phytoremediation of wastewater through aquatic macrophytes: Recent developments. International Journal of Phytoremediation, 21(7), 685–700.

[6]. Reddy, K. R. (1983). Nutrient removal potential of Azolla in wastewater treatment. Water Research, 17(8), 1213–1217.

[7]. Lumpkin, T. A., & Plucknett, D. L. (1980). Azolla as a green manure: Use and management in crop production. Westview Press, Boulder, Colorado.

[8]. Saha, A. K., & Gupta, S. K. (2022). Evaluation of Azolla-based biological wastewater treatment systems for nutrient and pollutant removal. Applied Water Science, 12(3), 76–89.

[9]. O‘zbekiston Respublikasi “Yashil iqtisodiyotga o‘tish strategiyasi 2030” (tasdiqlangan 04.10.2019-yil, PQ–4477-son Qaror).