Research Ceratophyllum on Cr6+ and Cu2+ sorption Undergraduate：hu xinting Supervisor：Li Hui Abstract: With the large discharge of industrial production and urban development and modernization of wastewater, increased accumulation of heavy metals in water, heavy metal pollution is getting worse, the scientific governance is i-mminent. In this paper, the use of biological adsorption of heavy metals adsor-bed water Cr6+, Cu2+. This selection of submerged plant Ceratophyllum as an adsorbent, which was dried, after grinding into powder into different concentrate-ions of Cr6+, Cu2+ solution, studied at different temperatures, different time, d-ifferent PH conditions , investigate the plant as feasibility of the adsorbent, th-us providing a viable solution for biosorption of heavy metals . Studies have shown that: concentration, time, PH can affect the size of Ceratophyllum adsor-ption of heavy metals, the greater the concentration of demersum Cr6+, Cu2+ r-emoval decreased, but the adsorption capacity gradually increased. In 60min ago, Ceratophyllum of Cr6+, Cu2+ removal gradually increased adsorption capacity-y is also increasing, 60min after Ceratophyllum of Cr6+, and Cu2+ adsorption capacity removal basically unchanged. Ceratophyllum at different temperatures for Cr6+, Cu2+ removal and adsorption capacity is also essentially unchanged. When changing solution PH, with the decrease of PH, removal and adsorption capacity of Cr6+ Ceratophyllum increasing. When PH = 1.5 when the removal rate and the maximum amount of adsorption; With PH worth increases, Cerato-phyllum of Cr6+, Cu2+ removal and adsorption capacity is increasing. Maximum when PH= 11. key words: Goldfish algae; To heavy metal; Adsorption; Removal rate