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为固体碳源反硝化工艺的实际应用提供理论和技术参数,采用一种淀粉基类的可生物降解聚合物作为反硝化微生物的固体碳源和生物膜载体反硝化脱氮,主要考察了低温对填充床反硝化性能的影响。试验结果表明:8～10℃的低温下,进水硝酸氮浓度在60～80mg.L-1之间时,反硝化速率为2.5～4.5mg.(L.h)-1,去除率低于20%,均比常温下有明显的降低;在水力负荷9～12cm.h-1之间时,反硝化速率与水力负荷成正比;在10～15℃范围内,温度对反硝化率的影响比常温时要大,温度常数K=0.046。
The theoretical and technical parameters were provided for the practical application of solid carbon source denitrification process. A starch based biodegradable polymer was used as the denitrifying microorganism for solid carbon source and biofilm carrier denitrification denitrification. The effects of low temperature on Effect of packed bed denitrification. The results showed that the denitrification rate was 2.5 ~ 4.5 mg. (Lh) -1 when the influent nitrate concentration was between 60 ~ 80 mg.L-1 at low temperature of 8 ~ 10 ℃. The removal rate was less than 20% , Respectively, which were significantly lower than those at normal temperature. The denitrification rate was proportional to the hydraulic load when the hydraulic load was 9 ~ 12cm.h-1. The effect of temperature on the denitrification rate was higher than that under normal temperature When large, the temperature constant K = 0.046.