河北平原地下水NO_3^-污染的原位微生态修复

In-situ microecological remediation of nitrate-contaminated groundwater in the Hebei plain, China

以地下水NO3-污染为例,利用优选的菌群制剂和少量营养碳源,在河北平原进行了NO3-污染地下水的原位微生态修复试验。试验结果显示,地下水NO3-含量在58-72．66mg／L时,经4．5-10天的修复试验,地下水NO3-含量降低至7．38-0．85mg／L,去除率达到86．5％-98．8％,去除效果较好,持续时间长。该方法为修复治理大面积地下水NO3--N污染提供了可行的技术支撑。

Take NO3^--N pollution of groundwater for example, the authors used a selected microbial pool agent and a little nutrient carbon to perform an experiment for in situ microecological remediation of NO3^--N-contaminated groundwater in the Hebei plain. The results indicate that the NO3^- concentration in groundwater decreases from 58-72.66 mg/L to 7.38-0.85 mg/L through 4.5-10 days of remediation experiment with the removal rate reaching 86.5-98.8%. The removal effect is good and lasted long. The technique provides a feasible technical support for the remediation and control of extensive NO3^--N pollution of groundwater.