Coagulation Treatment of Foundry and Thermal Power Plant Wastewater in the Navoi Region Using an Iron(Iii) Chloride Coagulant from Local Raw Material

Dilshod Olzhaev, Uktam Temirov, Nurmurodov Tulkin

Innovative Multidisciplinary Journal of Applied Technology · 2025-yil

Annotatsiya

Machine-building and power-generation enterprises in the Navoi region discharge wastewater that exceeds permissible concentrations for suspended solids, mineral salts and trace metals while relying mainly on mechanical settling ponds. This work evaluated a liquid iron(III) chloride coagulant (32.81 % FeCl₃) obtained from a local iron-bearing ore for four wastewater streams: the foundry shop of the Navoi Machine-Building Plant (NMZ) and three streams of Navoi Thermal Power Plant JSC (TPP). In the foundry wastewater, coagulation reduced solids from 10,557.8 to 1,372.5 mg/dm³ (87.0 %), Mn from 8.53 to 1.33 mg/dm³ (84.4 %) and Cu from 0.066 to 0.010 mg/dm³ (84.8 %), whereas Ni decreased by only 31.7 % and dissolved iron increased from 8.3 to 10.5 mg/dm³, indicating an excessive dose for this stream. In the TPP stream entering mechanical treatment, all parameters exceeded the maximum permissible concentrations (MPC) by 1.26–1.53 times; after coagulation, non-settleable solids fell from 460 to 278 mg/L, chloride from 1,360 to 960 mg/L and sulfate from 630 to 465 mg/L, and all parameters except BOD₅ (32 vs 30 mg/L) met the MPC. In the production-shop and 450 MW-unit streams, sulfate decreased from 4,383 to 3,132 and from 4,112.4 to 3,234 mg/L, bringing all exceeding parameters below the MPC. For the TPP annual discharge of 2,182 thousand m³, the treatment would keep about 397 t of suspended solids, 873 t of chloride and 360 t of sulfate out of the receiving water per year. A coagulation stage added to the existing three-pond mechanical treatment is proposed.

Maqola ma’lumotlari
MualliflarDilshod Olzhaev, Uktam Temirov, Nurmurodov Tulkin
JurnalInnovative Multidisciplinary Journal of Applied Technology
NashriyotТДТУ Қўқон филиали
ISSN2995-486X
Nashr sanasi2025-12-02
Jild3
Son12
Betlar169-175
TilIngliz
DOI10.51699/hhwh0t29
Indeksga qo‘shilgan2026-10-30

DOI: 10.51699/hhwh0t29 · Maqolaning asl sahifasi

Kalit so‘zlar

Ferric chloride, coagulation, foundry wastewater, thermal power plant, suspended solids, manganese, Navoi

Iqtibos keltirish

APADilshod Olzhaev, Uktam Temirov, & Nurmurodov Tulkin (2025). Coagulation Treatment of Foundry and Thermal Power Plant Wastewater in the Navoi Region Using an Iron(Iii) Chloride Coagulant from Local Raw Material. Innovative Multidisciplinary Journal of Applied Technology, 3(12), 169-175. https://doi.org/10.51699/hhwh0t29
GOST (OAK)Dilshod Olzhaev, Uktam Temirov, Nurmurodov Tulkin Coagulation Treatment of Foundry and Thermal Power Plant Wastewater in the Navoi Region Using an Iron(Iii) Chloride Coagulant from Local Raw Material // Innovative Multidisciplinary Journal of Applied Technology. – 2025. – T. 3, № 12. – P. 169-175. – DOI: 10.51699/hhwh0t29.
MLADilshod Olzhaev, Uktam Temirov, and Nurmurodov Tulkin. “Coagulation Treatment of Foundry and Thermal Power Plant Wastewater in the Navoi Region Using an Iron(Iii) Chloride Coagulant from Local Raw Material.” Innovative Multidisciplinary Journal of Applied Technology, 3(12), 169-175, 2025. https://doi.org/10.51699/hhwh0t29
ChicagoDilshod Olzhaev, Uktam Temirov, and Nurmurodov Tulkin. “Coagulation Treatment of Foundry and Thermal Power Plant Wastewater in the Navoi Region Using an Iron(Iii) Chloride Coagulant from Local Raw Material.” Innovative Multidisciplinary Journal of Applied Technology, 3(12), 169-175 (2025). https://doi.org/10.51699/hhwh0t29
HarvardDilshod Olzhaev, Uktam Temirov, and Nurmurodov Tulkin (2025) ‘Coagulation Treatment of Foundry and Thermal Power Plant Wastewater in the Navoi Region Using an Iron(Iii) Chloride Coagulant from Local Raw Material’, Innovative Multidisciplinary Journal of Applied Technology, 3(12), 169-175. https://doi.org/10.51699/hhwh0t29
BibTeX
@article{dilshodolzhaev2025,
  title = {Coagulation Treatment of Foundry and Thermal Power Plant Wastewater in the Navoi Region Using an Iron(Iii) Chloride Coagulant from Local Raw Material},
  author = {Dilshod Olzhaev and Uktam Temirov and Nurmurodov Tulkin},
  journal = {Innovative Multidisciplinary Journal of Applied Technology},
  year = {2025},
  volume = {3},
  number = {12},
  pages = {169-175},
  doi = {10.51699/hhwh0t29},
  url = {https://doi.org/10.51699/hhwh0t29}
}

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