Since the discharge of pollutants exceeds the environmental carrying capacity of natural water bodies

it is difficult to meet the needs of high-quality water environment. The construction of intensive surface water treatment plants is conducive to improving the quality of surface water environment. To meet the needs of nitrogen and phosphorus removal in surface water purification

a short process of flocculation sludge layer reactor nitrification/denitrification filter was developed. In the small-scale experiment

the reduction of ammonia nitrogen

nitrate nitrogen and total nitrogen were 64%

61% and 42% respectively; in t

he pilot experiment

the reduction of total nitrogen and total phosphorus were 71% and 74%respectively; in the engineering demonstration

the reduction of COD

Mn

ammonia nitrogen

total nitrogen and total phosphorus were 80%

99%

95% and 97% respectively. The process has been verified in the productive experiment of Lihu makeup Meiyuan purification plant

and the effluent meets the requirements of class Ⅲ water quality. In Hangzhou changqiaoxi water quality improvement project

the monitoring data of one-year operation of the process show that COD

Mn

ammonia nitrogen

total nitrogen and total phosphorus meet or are better than the requirements of surface class Ⅲ water quality. The results show that this process has a good application prospect in surface water purification.