Jamoliddin J.Musirmonov

Chemical components of wastewater, Domestic wastewater, Biological wastewater treatment, oil and gas producing enterprises, macrophytes.

ABSTRACT. This article analyzes the composition of domestic wastewater leaving the oil and gas industry. According to the results obtained, domestic wastewater from oil and gas industry enterprises is seasonal in nature, and the levels of chemical pollution exceed the established standard indicators. The chemical and physico-chemical processes of the main treatment processes were found to be fully functional, but there were still problems with the biological treatment process. In particular, it was noted that the indicator of pollution with phosphates in household waste water is 5.66 mg/l, which is 2.26 times more than the established norm, the indicator of pollution with chlorides is 651.74 mg/l, water is polluted 1.86 times more than the established standard indicator. In addition, indicators of pollution with sulfates, nitrates and nitrites were determined, and it was noted that they are above the norm. This article discusses the possibilities of using high-algae water in the treatment of domestic wastewater in oil and gas production enterprises, and the problems of systematic monitoring of existing technical regulatory indicators. Furthermore, the information about higher algae, is given microalgae and macrophytes used in domestic wastewater treatment. The article provides recommendations on improving the technology of using biological methods in the treatment of polluting chemicals contained in domestic waste

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