Sludge used for ecological restoration

July 04 06:01:18, 2018

The municipal sewage treatment plant sludge undertaken by the Nanjing Municipal Research Institute of Environmental Protection was used as a demonstration project for the ecological restoration of the Shukou River. Recently, it was identified through the results of a joint organization organized by the Municipal Science and Technology Bureau and the Environmental Protection Agency. Experts believe that this project has created a new model for the application of sludge in China's sewage treatment plant and the ecological restoration of mine wasteland.

It is understood that there are more than 170 craters from abandoned open-pit mines left by Nanjing. To restore green vegetation on bare rock, it is necessary to solve the problem of soil sources. Due to the lack of suitable soil sources, the city currently has only 20% of vegetation restoration.

In addition, how to deal with the sludge generated after sewage treatment, including chemical companies, has become a major problem. Based on a rough calculation, the sewage treatment plant in Jiangsu Province produces sludge of 800 to 1,000 tons per day. At present, there is no sewage treatment plant that has a very good treatment of sludge, and most of them are simple landfill methods. With the continuous expansion of sewage treatment plants, the secondary pollution of sludge has become the focus of attention in the industry.

Experts from the Nanjing University of Science and Technology believe that although the sewage sludge produced by the various sewage treatment plants is different in composition, it is a good solution for the soil after processing and processing. This not only can solve sludge problems, but also Bring considerable economic benefits.