Опубликовано в "Бизнес", язык - English. 44 страниц.
The UN’s theme for World Water Day, carried throughout the year and supported by the Department of Water and Sanitation, is wastewater. Wastewater is any water that has been adversely affected in quality by a variety of factors, such as sewage, stormwater, agricultural activities, and run-off from surface and sewer inflow. Еще
