矿山酸性废水处理生物转盘反应器启动及工艺特性研究

生物转盘反应器是一种高效率的微生物固定化装置，很适合处理水量适中的矿山酸性废水。研究了生物转盘反应器启动阶段的工艺条件。试验结果表明：以10%接种量接种，连续6次培养后，可完成反应器的启动；伴随着多次反复培养挂膜进程，Fe²⁺氧化周期不断缩短，由最初的100 h降低到70 h，同时生物膜对Fe²⁺的氧化能力不断趋于稳定。考察了反应器在稳定阶段时，水力停留时间、转盘转速和入口浓度对Fe²⁺氧化率的影响。结果表明，在本试验条件下，最佳水力停留时间为4 h，合理转盘转速为7 r/min。

Research on the Start-up and Process Properties of Rotating Biological Contactor for Acid mine Drainage Treatment

The rotating biological contactor is a high efficient immobilized device for microorganism which is suitable for treating the acid mine drainage.The process conditions of the start-up and stabilizing stage of rotating biological contactor are studied.The test result shows that the start-up of reactor can be affected by six consecutive cultivations with 10% inoculation amount.With the repeated biofilm forming process, the cycle of Fe²⁺ oxidation is shortened continuously, from the initial 100 h to 70 h, and meanwhile, the biofilm's capacity of Fe²⁺ oxidation tends to become stable.The impact of the hydraulic retention time, rotating speed and inlet concentration on Fe2+ oxidation rate in a stable treatment process for acid mine drainage was investigated.The results show that are the best, the 4 h hydraulic retention time and the 7 r/min rational rotating speed.