POLLUTION WITH Cr6+ OF GROUNDWATER AND SURFACE WATER FROM THE INDUSTRIAL DUMP JUGOHROM - JEGUNOVCE – THE REPUBLIC OF NORTH MACEDONIA
| Autor: | Mihailovski, Stojan, Mircovski, Vojo, Ilijovski, Zlatko |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Rudarsko-geološko-naftni zbornik Volume 36 Issue 5 Rudarsko-geološko-naftni Zbornik, Vol 36, Iss 5, Pp 121-129 (2021) |
| ISSN: | 1849-0409 0353-4529 |
| Popis: | In order to investigate the pollution with hexavalent chromium (Cr6+) of the groundwater and surface water around the industrial dump Jugohrom – Jegunovce, hydrogeological investigations were carried out during November 2019, where 16 samples of groundwater and 3 samples of surface water were taken. In most of the analyzed samples of groundwater and surface water, the concentration of Cr6+ exceeds the maximal allowed concentrations (MAC) of Cr6+ (0.01 mg/l) according to the Macedonian and European standards in drinking water. The highest contamination with Cr6+ which is in the range of 0.052 – 132.98 mg/l is registered near the dump in the shallow groundwater, i.e. in the unconfined aquifers. Cr6+ pollution ranging from 0.017 to 0.041 mg/l has also been registered in some of the samples at artesian aquifers with a sub-artesian level. Two tests were carried out on the surface water of the Vardar River, before and after the dump. A sevenfold increase in Cr6+ concentration of 0.069 was observed after the dump. Cr6+ content of 725 mg/l was found in the drainage of overflow water in the discharge. Pollution of the groundwater and surface water with Cr6+ is anthropogenic and is a result of the operation of the Metallurgical Plant Jugohrom in the period from 1955 to 1994. Kako bi se istražilo zagađenje šesterovalentnim kromom (Cr6+) podzemnih i površinskih voda oko industrijskoga odlagališta otpada Jugohroma – Jegunovce provedena su hidrogeološka istraživanja tijekom studenoga 2019. godine. Uzeto je 16 uzoraka podzemnih i 3 uzorka površinskih voda. Koncentracije Cr6+ u većemu dijelu analiziranih uzoraka podzemnih i površinskih voda nadilaze najveće dopuštene koncentracije od 0,01 mg/l prema makedonskome i europskim standardima o pitkoj voda. Najveće onečišćenje Cr6+ kreće se u rasponu 0,052 – 132,98 mg/l, a opaženo je u blizini plitkih podzemnih ili slobodnih vodonosnika. U arteškim vodonosnicima sa subarteškom razinom vode u nekim uzorcima opaženo je onečišćenje Cr6+ 0,017 – 0,041 mg/l. Načinjena su dva ispitivanja na površinskim vodama rijeke Vardar, ispred i iza odla gališta otpada. Koncentracija Cr6+ (0,069) povećana sedam puta pronađena je uz odlagalište otpada. U preljevnoj vodi iz drenaže utvrđen je sadržaj Cr6+ od 725 mg/l. Zagađenje podzemnih i površinskih voda s Cr6+ antropogeno je, a rezultat je rada Metalurškoga postrojenja Jugohroma u razdoblju od 1955. do 1994. godine. |
| Databáze: | OpenAIRE |
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