The purification effects of the sphagnum wetland on the contaminated water were studied.Two kinds of compounds(which are phosphate and bluestone) were used as pollutants in this study and the simulation boxes were introduced into the study.10 L polluted water was added into every box,using four grads of concentration of each element-0,100,1000,1000 mg/L.The experimental results indicated that:the purification rate of the three kinds of water polluted by the phosphate(concentrations are 10,100,100 mg/L,respe...