基于三冲量PID控制的煤矿废水慢速脱碳改造

Slow Decarburization Reform of Coal Mine Wastewater Based on Three-impulse PID Control

为了保持煤矿井下疏干水处理过程中慢速脱碳的净化效果,稳定废水处理中间池的pH值,通过分析与探索中间池水位的影响因子,提出一种基于进料、出水、流量扰动的三冲量控制方法,另外还建立了中间池水位的系统模型以及Simulink中的三冲量仿真模型。仿真结果表明:基于三冲量PID的控制方法可以在10 s内完成扰动消除,较单冲量而言时间减少了290 s左右,水量扰动仅为几十毫升,较大程度上稳定了中间池的pH值。

In order to maintain the purification effect of slow decarburization in the process of the mine dewatering treatment and stabilize the pH value of wastewater intermediate treatment pool, the three - impulse control method based on the feed, effluen and flow disturbance was proposed by analyzing and probing the influence factors of the water level of the intermediate treatment pool, in addition, the system model of the water level of the intermediate treatment pool and the three impulse simulation model in Simulink were established. The simulation results showed that the three-impulse PID control method can eliminate the disturbance within 10 s, the time was reduced by about 290 s as compared with the single impulse method, the disturbance of the water volume was just a few tens of milliliters, and the pH value of the intermediate pool was stabilized to a great extent.