Method and bacterium and alga system for remedying high-nitrogen and high-phosphorus river water bodies

Abstract

The invention provides a method for remedying high-nitrogen and high-phosphorus river water bodies. The method includes steps of S1, periodically measuring water body parameters of the high-nitrogen and high-phosphorus river water bodies; S2, aerating the to-be-remedied water bodies; S3, releasing beneficial algae into the water bodies when the dissolved oxygen levels of the water bodies reach thelevels of 2 mg / L and allowing the beneficial algae to breed in the water bodies; S4, releasing microbial agents into the water bodies when the coverage rates of the beneficial algae in the water bodies reach 50%; S5, releasing alga eating worms into the water bodies when the ammonia nitrogen levels of the water bodies are reduced and reach the levels of 2 mg / L. The aeration intensity at the stepS2 is set according to the difference between actual values and expected values of the dissolved oxygen concentration of the water bodies. The invention further provides a bacterium and alga system for remedying the high-nitrogen and high-phosphorus river water bodies. The method and the bacterium and alga system have the advantages that the water quality of the water bodies can be effectively improved, organic pollutants in bottom mud and the water bodies can be degraded, and ecological systems of the water bodies can be remedied.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for repairing high-nitrogen-phosphorous river gushing water and a bacteria and algae system. Background technique [0002] With the continuous growth of the national economy, the continuous expansion of industrial scale, the continuous increase of urban population, the discharge of industrial wastewater and domestic sewage is increasing, and the sewage treatment capacity is far behind the speed of sewage production, resulting in a lot of sewage being discharged into rivers and seas without treatment. Dealing with the problem is getting tougher. A lot of sewage contains a lot of sugars, nitrogen and phosphorus compounds, etc. A large amount of sewage with high nitrogen and phosphorus elements is discharged into the water body, causing the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) in the water body to seriously exceed the standard, r...

AI Technical Summary

Problems solved by technology

A lot of sewage contains a lot of sugars, nitrogen and phosphorus compounds, etc. A large amount of sewage with high nitrogen and phosphorus elements is discharged into the water body, causing the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) in the water body to seriously exceed the standard, resulting in water quality and the aquatic ecological balance is affected