Treatment of Black and Smelly Water in National Park of Lingtang Hui Township, Gaoyou City

1. Before the treatment of Shuangqing River, the water was black and odorous, the dissolved oxygen was below 1.5mg/l, the dissolved oxygen was low, the COD was 65mg/l, the ammonia nitrogen was 3.2mg/l, the total phosphorus was 1.2mg/l, and the water quality was indicators are relatively poor.   (Photo 1. Shuangqing River before treatment)

2.The company adopts artificial aeration + ecological floating island + biological strain restoration for joint management. (Photo 2. Production of biological floating island             Photo 3. On-site pictures under restoration)

3. After more than three months of management by the company, in August 2019, the water quality indicators were detected as dissolved oxygen at 2. 6mg/l, COD at 28mg/l, ammonia nitrogen at 1.2mg/l, and total phosphorus at 0. 28mg/l, eliminating the river channel The black and odorous phenomenon has reached the standard of three types of surface water. (Photo 4. The restored Lingtang Shuangqing River)