k1 bio filter media
- Feb 02, 2018 -
Surface water pollution is obvious, groundwater pollution is shocking. Of the 1.3 billion people in China, 70% are drinking groundwater, and more than 400 cities in more than 660 cities use groundwater as a source of drinking water. But it is reported that 90% of the country's urban groundwater has been contaminated. Another set of data shows that groundwater is facing serious challenges. 2011, Beijing, Shanghai and other 9 provinces and cities in the jurisdiction of the 857-eye monitoring well carried out evaluation of the water quality of the category I, Class II monitoring well accounted for 2%, and IV, V-class monitoring well up to 76.8%.