Applying mass balance dilution technique for wastewater disposal to Greater-Zab river in Erbil, Kurdistan region-Iraq

Shuokr Qarani Aziz; Bruska Sardar  Mamand

doi:10.5937/ror2101031A

Autori

Shuokr Qarani Aziz Salahaddin University-Erbil, College of Engineering, Department of Civil Engineering, Kurdistan Region, Iraq Author https://orcid.org/0000-0002-3458-2083
Bruska Sardar Mamand Salahaddin University-Erbil, College of Engineering, Department of Water Resources Engineering, Kurdistan Region, Iraq Author https://orcid.org/0009-0008-5984-1804

DOI:

https://doi.org/10.5937/ror2101031A

Ključne reči:

Erbil, smanjenje, maseni bilans, rečna voda, prečišćavanje, otpadne vode

Apstrakt

Prečišćavanje otpadnih voda pre njihovog puštanja u životnu sredinu ili izvore vode predstavlja neophodan korak. Za prečišćavanje različitih vrsta otpadnih voda primenjuju se brojne tehnike. Do sada nije zabeležena primena postupka smanjenja masenog bilansa za prečišćavanje različitih vrsta otpadnih voda u gradu Erbilu koji se nalazi u regiji Irački Kurdistan. Shodno tome, cilj ovog rada je ispitivanje primene metode smanjenja masenog bilansa dodavanjem rečne vode za prečišćavanje različitih vrsta otpadnih voda. Ispitivane su osobine različitih vrsta otpadnih voda, kao i osobine vode u reci Gornji Zab koja protiče kroz Erbil. Ispitivane su osobine otpadnih voda iz klanica, pogona za štavljenje, komunalni otpad, procedne vode, kao i otpadne vode iz mlekara i rafinerija koje se nalaze u Erbilu. Postupak koji uključuje maseni bilans je primenjen da bi se potvrdilo smanjenje različitih vrsta otpadnih voda u prisustvu vode iz reke Gornji Zab. Izračunat je faktor smanjenja i potrebna količina rečne vode. Temperatura, biohemijska potrošnja kiseonika (BPK) i rastvoreni kiseonik su takođe ispitani. Rezultati su pokazali da je faktor smanjenja kod ovih otpadnih voda varirao između 10,36 i 513,91. Mešanje otpadnih voda i vode iz reke Gornji Zab je dovelo do smanjenja količine rastvorenog kiseonika u rečnoj vodi za 3,525 %, kao i do povećanja biohemijske potrošnje kiseonika u vodi Gornjeg Zaba. Smanjnje masenog bilansa koristeći različite količine neobrađene rečne vode je dovelo do smanjenja zagađivača u otpadnim vodama na prihvatljiv nivo i voda se smatrala prečišćenom. Za prečišćavanje različitih vrsta otpadnih voda potrebna je određena količina neobrađene vode. Sedimentacija je postupak koji se obično preporučuje pre primene postupka smanjenja masenog bilansa vodom iz Gornjeg Zaba. Maksimalni protok od 1.182 m3/s smatra se dovoljnim za tretman svih pomenutih vrsta otpadnih voda na teritoriji grada Erbil.

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