Study on the Self-purification of Juma River

The capacity of river self-purification is an important indicator for the river health. The organic and inorganic pollutants in most of the rivers in China are beyond the self-purification capacity of the river, which has caused the serious pollution to the water body. The capacity of the self-purification of the river may act as one of the indicators in regulating the discharge standards. Three reaches in Juma River were selected including serious polluted, light polluted and clear reach. The samples of water and aquatic plants were taken for the pollutant test. The results indicate that the Juma River has a great ability to purify the organic pollutants such as TN and TP, but little ability to the heavy metal ions. By analyzing the pollutant absorption ability of the three aquatic plants, Myriophyllum spicatum has greatest ability to absorb the organic pollutants.