ranked nation by the quantity of wastewater produced. In 2012, the whole discharge of wastewater within the country amounted to sixty eight.5 billion tonnes which is in volume terms similar to the annual move of the Yellow River of fifty eight billion m3 every year. Discharged wastewater contains of discharge from home use (e.g. human waste, washing water, city runoff) and industrial wastewater. These are often labelled “point-supply air pollution” as there are particular factors where the wastewater is discharged. Contrary to level-supply wastewater, nonpoint-supply
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