乌梁素海底泥沉积物资源化利用初步分析

基于乌梁素海底泥沉积物的分布特征、质地、营养物成分及其含量,对乌梁素海底泥沉积物资源化利用前景进行了初步的分析.粒径级配分析结果表明,乌梁素海底泥沉积物受沉积作用明显,分选性好,属于砂壤土和壤土,可以用做土建工程材料;底泥沉积物中所含污染物成分分析结果表示,虽然底泥沉积物受上覆富营养化水体的影响,氮、磷和有机养分含量相对较大,但仍属于中等肥力土壤,且伴随着较大含量的重金属积累,可能会在资源化利用中对土壤、水体等造成二次污染,具有一定的生态风险性,不适宜用做农田施肥,可在一定保护措施条件下用做土壤质地改良、建立湖滨带和堆放处置等.

Analysis of potential utilization of upper-layer sediment in Wuliangsuhai Lake

The distribution characteristics,texture,nature,nutrient content and heavy metal content of the upper-layer sediments in Wuliangsuhai Lake were analyzed.The results showed that the sediments were mainly consist of sandy clay loam,and could be used for civil engineering materials.Although the sediments were rich in nitrogen,phosphorus and organic matters,the content of which are too low to be used for fertilizing farm land.Meanwhile,heavy metals have been accumulated by a considerable amount in the sediments.The secondary pollution to the environment must be considered very carefully.The sediments could be used for improving soil quality,establishing lakeshore green belts,and stacking disposal with proper protection measures.