Journal articleOpen access
Physicochemical composition of groundwater in Nukus and its effect on water quality
Nukus shahri yer osti suvlarining fizik-kimyoviy tarkibi va ularning suv sifatiga ta’sirini baholash
- Navoi State University of Mining and Technologies, Navoi, Uzbekistan
- Tashkent Pharmaceutical Institute, Tashkent, Uzbekistan
- Youngsan University, Busan, South Korea
Highlights
- Two wells: Samankul mahalla (Khojeli district) and Darsan Sayek aul (Nukus district).
- Total hardness 14.4 and 19.3 mg-eq/dm³; pH 8.0 in both.
- Dry residue 1,344 and 1,728 mg/dm³ (drinking-water limit 1,000 mg/L).
- Sulphate 240 and 283 mg/dm³; chloride 221 and 378 mg/dm³; nitrate 1.0 and 1.8 mg/dm³; fluoride 0.3 and 0.12 mg/dm³.
Abstract
This article examines the physicochemical characteristics of groundwater taken from two different sources located in the vicinity of the city of Nukus, including pH, hardness, dry residue, major anions and cations, as well as the content of heavy metals. The obtained results were compared with sanitary and regulatory indicators, and their impact on water quality was assessed. The study showed that the water is characterized by high hardness and an increased concentration of sulfate and chloride ions.
English abstract from the paper. The authors’ abstract, reproduced under CC BY-NC 4.0.
Keywords
- water hardness
- dry residue
- anions and cations
- mineralisation
- anthropogenic pollution
In plain English
The authors sampled two wells: one on Aydar street in Samankul mahalla of Khojeli district, and one in Darsan Sayek aul of Nukus district. They measured odour, turbidity, pH, total hardness and dry residue, nitrite, nitrate, sulphate and chloride, iron, copper, zinc, lead and cadmium, and fluoride, and compared the results with Uzbekistan’s drinking-water norms.
Both waters have a pH of 8.0 and are very hard: 14.4 mg-eq/dm³ in Khojeli district and 19.3 mg-eq/dm³ in Nukus district. Dry residue is 1,344 and 1,728 mg/dm³, sulphate 240 and 283 mg/dm³ and chloride 221 and 378 mg/dm³. Nitrate (1.0 and 1.8 mg/dm³) is far below the 45 mg/dm³ limit, lead, zinc and cadmium were not found and iron and copper only in traces, and fluoride (0.3 and 0.12 mg/dm³) is below the 0.7–1.5 mg/dm³ norm.
The authors recommend softening, aeration and filtering before the water is used. Citing earlier studies, they describe groundwater around Nukus as mostly sulphate–chloride sodium or bicarbonate–sulphate water with a mineralisation often of 1,500–3,000 mg/L, formed by the Amu Darya, precipitation and seepage from irrigated land and concentrated by strong evaporation.
How to cite
Z. U. Abdiramanova, F. E. Umirov, O. J. Hamidov, X. R. Tuxtayev and V. J. Toshnazarov (2025). Physicochemical composition of groundwater in Nukus and its effect on water quality. Journal of Advances in Engineering Technology, 2025, No. 4 (20), pp. 19–23. https://sciencealgorithm.uz/?portfolio=nukus-shahri-yer-osti-suvlarining-fizikkimyoviy-tarkibi-va-ularning-suv-sifatiga-tasirini-baholash