固定化藻菌共生体处理畜禽养殖废水效果优化

The effect optimization of immobilized algal-bacterial symbiont in treatment livestock wastewater

针对固定化藻菌共生体处理畜禽养殖废水中废水处理效果及微生物生长量等问题。在实际废水中,拟通过正交试验和多指标全概率分析法,研究固定化参数对固定化小球强度、微生物生长情况、碳氮磷去除效果的影响,优化固定化参数;并通过实验对比,探究固定化对藻菌共生体的影响。结果表明:海藻酸钠浓度为4%、氯化钙浓度为1%、固定化时间为12 h时是最适合畜禽养殖废水的固定化参数;固定化藻菌体系明显拥有更高的生物量,固定化藻菌体系的COD、TN、TP去除率分别为92.63%,53.04%,91.58%,除COD去除率略低于悬浮性体系外,其他项目较悬浮性藻菌体系均有明显优势。该结果可为固定化藻菌共生体在畜禽养殖废水处理中的应用提供一定参考。

For the problems of immobilized algae-bacteria symbionts and the growth of microorganism in the livestock wastewater treatment, the effects of immobilization parameters on the strength of immobilized pellet, the growth of microorganism and the removal efficiency of carbon, nitrogen, and phosphorus were studied by orthogonal test and multi-index full probability analysis, with the optimized immobilized parameters being obtained.The influence of the immobilization on the symbiont of algal bacteria was investigated by experimental comparison.The results showed that the sodium alginate concentration of 4%,the calcium chloride concentration of 1% and the immobilization time of 12h were the most suitable immobilization parameters.The immobilized algal-bacteria system had significantly higher biomass, and the removal rates of COD,TN and TP in the immobilized algal bacteria system were 92.63%,53.04% and 91.58%,respectively.These results can provide some guidance for the application of immobilized algal-bacteria symbiont in the treatment of livestock wastewater.