Abstract
Abstract
This work has focused on a pharmaceutical plant waters and the environmental impact of its discharges. The Water Quality Index (WQI), the Organic Pollution Index (OPI) and the Sodium Adsorption Ratio (SAR) of incoming and outgoing waters were analyzed over seasonal variations for 5 months using classical and mathematical indices. Highly significant increases were observed at the output (p < 0.001) for electrical conductivity, alkalinity, calcium and sodium; very significant (p < 0.01) for nitrites, COD and BOD5; significant (p < 0.05) for turbidity, potassium and chlorides. The sulfates, nitrates, phosphates, ammonia, TSS, magnesium, aluminum, iron and manganese showed no significant differences (p > 0.05). These parameters remained high all over the study period except for the BOD5. The WQI was reported in input waters in the range 85.9–89.5 indicating water safe for domestic use, range 42.3–60.9 (medium to bad) in output waters highlighting the water pollution. The OPI highlighted waters with low-to-moderate pollution, essentially due to high levels of nitrites. The SAR was found in “medium-to-high” salinity and “low sodium” ranges, thus precautions required in soils but without significant global effects. The COD/BOD5 ratio highlighted a wastewater sometimes difficultly biodegradable (ratio > 3). In conclusion, often throughout all the study period, the outgoing waters were found with bad quality and non-negligible risks for soils; it is thus strongly advocated that these waters must undergo appropriate treatment to improve its physicochemical quality.
Publisher
Springer Science and Business Media LLC
Reference53 articles.
1. Akin BS (2016) Contaminant properties of hospital clinical laboratory wastewater: a physiochemical and microbiological assessment. J Environ Prot 7:635–642
2. Almeida SFP (2001) Use of diatoms for freshwater quality evaluation in Portugal. Limnetica 20(2):205–213
3. Andreozzi R, Raffaele M, Nicklas P (2003) Pharmaceuticals in STP effluents and their solar photodegradation in aquatic environment. Chemosphere 50:1319–1330
4. Ayers RS, Westcot DW (1985) Water quality for agriculture, food and agriculture organization, irrigation and drainage paper 29, Rev 1. Rome, Italy
5. Bascaron M (1979) Establishment of a methodology for the determination of water quality. Bol Inf Medio Ambient 9:30–51, CIMA, MOPU, Madrid. In: Lumb A, Sharma TC, Bibeault JF (2011) A review of genesis and evolution of water quality Index (WQI) and some future directions. Water Qual Expo Health 3:11–24.
https://doi.org/10.1007/s12403-011-0040-0
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