可控内循环厌氧反应器处理木薯模拟废水的动力学研究  

Study on Dynamics Characteristics of a Novel Reactor with Controlling Internal Circulation for Treating Cassava Simulated Wastewater

作　　者：宿程远[1,2] 邱锐[1] 陈孟林[1] 黄智[1] 

机构地区：[1]广西师范大学环境与资源学院 [2]岩溶生态与环境变化研究广西高校重点实验室,广西桂林541004

出　　处：《水处理技术》2016年第11期43-47,共5页Technology of Water Treatment

基　　金：广西千亿元产业重大科技攻关项目(11107021-5-3);广西自然科学基金(2013GXNSBA019213)

摘　　要：对新型可控内循环厌氧反应器处理木薯模拟废水的动力学特性进行了研究,在进水COD为6~7 g/L条件下,考察了不同的HRT与反应器出水COD的关系,通过Eckenfelder模型与物料衡算,建立了其动力学模型,并确定了动力学参数。结果表明,在假设反应器第1反应区为完全混合状态、第2反应区为平推流状态的条件下,第1反应区的动力学模型可用S_m=S_i/(1+K_1t_1)表示,第2反应区的动力学模型可用S_(me)=S_m/exp(K_2t_2-C)表示,其中K_1=0.833 3 h^(-1),K_2=0.056 63 h^(-1)。该模型预测的COD与实测COD第1反应区出水平均相对误差为9.43%,第2反应区的平均相对误差为16.84%。而当可控内循环开启后,需引入修正系数α(2.0~2.8),经修正后的计算COD与实测COD吻合度较高。The dynamics characteristics of a novel anaerobic reactor with controlling internal circulation for treating cassava simulated wastewater were investigated. Under the condition of the influent COD 6-7 g/L, the relationship between different HRT and effluent COD was investigated. Then the dynamics model was established, and the kinetic parameters were determined through Eckenfelder model and material balance. The results showed that when the reactor states were supposed that the first reaction zone was in the completely mixed state, and the second reaction zone was in the plug flow, the dynamical models could be represented as Sm=Si/（1＋K1t1） in the first reaction zone, and Se=Sm/eXp （K2t2-C） in the second reaction zone. In these models, the values of K1 and K2 were 0.833 3 h-land 0.056 63 h-1 respectively. Comparing with the actual COD, the prediction results through the models had a 9.43% average relative error in the first reaction zone and a 16.84% average relative error in the second reaction zone. However, after the internal circulation started, the correction coefficient a （2.0-2.8） was needed to introduce. And then the calculated value of revised had a good agreement with the measured values.

关 键 词：可控内循环厌氧反应器 木薯废水 动力学 基质降解 

分 类 号：X703.1[环境科学与工程—环境工程]