The State Of Ecology In The Territory Of The Chechen Republic
Table 3: Average annual concentrations of Terek and Sunzha water pollutants in 2019 mg/dm3
Rivers | Pollutants | ||||||||
Nitrates | pH | Chlorides | Sulfates | Oxygen content | BOС5 | Permanganate acidity | Dry residue | ||
1 | Terek | 8.6 | 7.5 | 140.5 | 101.3 | 8.2 | 1.6 | 3.2 | 370 |
2 | Sunzha | 7.5 | 7.5 | 128.1 | 86.7 | 8.6 | 1.8 | 3.4 | 303 |
environmental limit concentration | 45 | 6.5-8.5 | 350 | 500 | no less4.0 mg O2/dm3 | not more than4.0 mg O2/dm3 | not more than 5.0 | 1000 |