Natural Degradation and Environmental Impact of Cyanide from A Goldmine
金矿废水中氰化物的自然降解及其环境影响

The degradation regularity of cyanide from a goldmine wastewater conform to negative exponential function in its tailing dam,regulation pond and the rivers.The main reason of cyanide decrease in streams A and C receiving the goldmine wastewater is dilution.The cyanide from the goldmine wastewater should not affect the international river F.Available way of decreasing the cyanide pollution on the streams is to increase the rate of circulating water so that lower the wastewater level in the regulating pond and decrease the amount of leakage of the wastewater.