| Abstract | Coal, Scope and Background. Amu Darya river, one of the main water resources of Uzbekistan, shows a relevant longitudinal enrichment of soluble contents which strongly limits the human uses of its waters. Because of the low natural run-off processes, salts and pollutants are mainly driven to the river by the return waters used for washing and irrigating the surrounding lands. The influence of return waters on stream quality is dramatically relevant in the lower reaches of the river where almost all the flowing waters have been previously used for the agriculture practises. To provide analytical evidence on the potential effects of return waters oil the quality of the Amu Darya river, the paper reports and comments data on salinity and metals contents of the waters flowing in the artificial channel network of Bukhara and in the Amu Darya river, from Bukhara Lip to the darn forming, the Tuyamuyn Hydro Complex (THC). |
| Text | 307870 2006 10.1065/espr2006.01.007 ISI Web of Science WOS 000234031300007 Amu Darya metal pollution return water water pollution water quality water salinity water security Uzbekistan Water security in Uzbekistan Implication of return waters on the Amu Darya water quality Crosa, G; Stefani, F; Bianchi, C; Fumagalli, A Dept Biotechnol Mol Sci; Dept Struct Funct Biol Coal, Scope and Background. Amu Darya river, one of the main water resources of Uzbekistan, shows a relevant longitudinal enrichment of soluble contents which strongly limits the human uses of its waters. Because of the low natural run off processes, salts and pollutants are mainly driven to the river by the return waters used for washing and irrigating the surrounding lands. The influence of return waters on stream quality is dramatically relevant in the lower reaches of the river where almost all the flowing waters have been previously used for the agriculture practises. To provide analytical evidence on the potential effects of return waters oil the quality of the Amu Darya river, the paper reports and comments data on salinity and metals contents of the waters flowing in the artificial channel network of Bukhara and in the Amu Darya river, from Bukhara Lip to the darn forming, the Tuyamuyn Hydro Complex THC . Methods. A total of 15 sampling sites were selected for the analytical survey Two sites were located oil the Amu Darya river downstream from the inflow of the return waters from Bukhara, two in the river entering in the THC, and three downstream from the darn forming the reservoir complex. The waters entering and leaving the Bukhara agricultural area were sampled in two main collectors, while the waters flowing in the channel system were sampled in six distinct collectors. The following parameters were considered in the survey pH, Oxygen, Hardness, Salinity, Conductivity, P PO43 , P tot, N tot, N NO32 , N NO2 COD, Ca2 , Mg2 , Fe, Mn, Zn, Cr, Cu, Ni, Cd, Pb. 13 Articolo in rivista Springer 0944 1344 Environmental science and pollution research international Environmental science and pollution research international Environ. sci. pollut. res. int. Environmental science and pollution research international. Environmental science and pollution research international Print Environmental science and pollution research Print ESPR Print fabrizio.stefani STEFANI FABRIZIO |
