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Acid Mine Drainage (AMD) pollution is a worldwide problem, AMD's main features are: low pH, high concentrations of sulfate and soluble heavy metal ions. Acid mine drainage discharge will cause great harm to the environment. Currently, the acid mine drainage treatment methods include neutralization, artificial wetlands law, microbiological method. However, neutralization, constructed wetland method there is no secondary pollution, treatment is not thorough, high cost shortage. Microbiological method is a new processing technology, in recent years, the use of sulfate-reducing bacteria (SRB) Treatment of Acid Mine Drainage become a research hotspot. Based on this, the thesis of the sulfate-reducing bacteria treated acid mine drainage techniques are studied. Thesis, sulfate-reducing bacteria were cultured optimization test conditions, the test showed that: carbon source is sodium lactate, pH = 7, T = 30 ℃, COD / SO 4 2 - = 1.6 The culture conditions, better growth. And gradually increase the use of Cu 2 concentration, reduce the PH method domesticated species, to obtain resistant Cu 2 concentration of 90mg / L, pH = 4.5 of sulfate-reducing bacteria. Intermittent use of laboratory test methods, the influent SO 4 << / sup> sup> 2 - concentration 2.3g / L, influent COD / SO 4 2 - 1.6, water pH4.5, temperature 30 ℃ under the conditions of use of sulfate-reducing bacteria after dilution mine drainage treatment, the reaction is stable SO 4 2 - removal rate reached 77.39% or more, up 90.4%, copper ion removal rate of 99.8%. Experimental results show that sulfate-reducing bacteria acid mine drainage treatment is feasible. Paper uses a continuous upflow anaerobic reactor treating acid mine drainage. Tests on process parameters: hydraulic retention time, water PH value, water load on the effect of sulfate reduction were studied. Optimum process parameters: hydraulic retention time of 8 days, COD / SO 4 2 - 1.6, influent SO 4 2 - concentration of 2.3g / L and water pH6. At a temperature of 30 ℃, HRT = 8d, COD / SO 4 2 - = 1.6, inlet SO 4 2 - concentration = 2.3g / L and 3 times dilution of waste water under the same conditions, choose two different water pH, respectively, and the water inlet pH4.5 pH6.0. Two upflow anaerobic reactor while continuously run successfully 59 days. Water reactor pH4.5 for 24 days, the average removal rate of sulfate 75.35%. Copper ion removal rate 99.98%, the effluent can meet industrial emissions standards. The removal of iron ions than 88.87%. Water reactor pH6.0 for 24 days, the average removal rate of sulfate 81.22%. Removal of copper ions was 100% and the effluent reached industrial emissions standards. The removal rate of 91.61% iron or more. Paper also carried out by acid mine drainage process dynamics analysis and research, the use of Monod model for processing, for a linear regression, correlation coefficient r = 0.9846, a significant linear correlation.
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