The river is located in the industrial park, and the main pollution sources are point source pollution and non-point source pollution. Point source pollution is mainly rain and sewage mixed discharge along the river sewage discharge port; Non-point source pollution mainly includes privately cultivated vegetable fields on the shore, garbage piled up in the open air by industrial enterprises, incomplete green belts, and surface runoff caused by rain erosion, resulting in non-point source pollution. Before treatment, the river water quality is inferior to Class V.
In view of this situation, according to different pollutants or different polluted river sections in the water environment, by setting specific biological fillers, indigenous microorganisms can be activated in a targeted manner, and dominant strains can be cultivated in the biological fillers to multiply, which can be released into the water with the microcirculation of the water body, change the ecological balance of the original microorganisms, improve the water environment and repair the polluted water body. At the same time, combined with centralized aeration, an anoxic-aerobic-anoxic section is formed, which provides a growth environment for microorganisms, synchronously and effectively removes ammonia nitrogen and total phosphorus in the water body, and improves the pollutant carrying capacity of the water body. After treatment, the water quality of the river reaches Class IV water standard stably.
