白洋淀疏浚底泥改良制备绿化种植土试验研究  

Experimental study on improving dredged sedimentin Baiyangdian to produce greening planting soil

作　　者：谭相君 黄佳音 侯明昱 胡保安 史浩良 TAN Xiang-jun;HUANG Jia-yin;HOU Ming-yu;HU Bao-an;SHI Hao-liang(CCCC(Tianjin)Eco-Environmental Protection Design & Research Institute Co.,Ltd.,Tianjin 300202,China)

机构地区：[1]中交(天津)生态环保设计研究院有限公司,天津300202

出　　处：《水运工程》2023年第S02期6-10,74,共6页Port & Waterway Engineering

摘　　要：针对白洋淀疏浚工程产生的大量底泥,研究疏浚底泥改良制备绿化种植土的资源化利用方式。采用膜覆盖好氧发酵方法,设计3种辅料方案,对照CJ/T 340—2016《绿化种植土壤》标准分析试验过程中底泥的物理化学指标变化。结果表明,辅料的有机质、营养元素等含量直接影响底泥的发酵效果,农田废弃物作为主要辅料与底泥混合发酵效果最好,底泥的土壤入渗率、速效氮、有效磷、速效钾分别提高44.3%、18.0%、22.8%、10.0%,有利于改善河湖底泥的改良效果。研究成果可为疏浚底泥大规模资源化处置提供支撑,实现环保疏浚产业链的闭合。Regarding the large amount of dredged sediment produced by Baiyangdian dredging project, we study the resource utilization of greening planting soil prepared by improved dredged sediment. We design three auxiliary material schemes and use membrane covered aerobic fermentation to analyze the changes of physical and chemical indexes of sediment during the test according to the standard of CJ/T340—2016 greening planting soil. The results show that the contents of organic matter and nutrient elements of auxiliary materials directly affect the fermentation effect of sediment. The mixed fermentation effect of farmland waste as the main auxiliary material and sediment is the best. The soil infiltration rate, rapidly available nitrogen, available phosphorus and rapidly available potassium of sediment increase by 44.3%,18.0%,22.8% and 10.0% respectively, which is conducive to the improvement effect of river and lake sediment. This study provides scientific and technological support for large-scale resource disposal of dredged sediment, and realizes the closure of environmental protection dredging industry chain.

关 键 词：疏浚底泥 资源化利用 好氧发酵 绿化种植土 

分 类 号：U616[交通运输工程—船舶及航道工程] X55[交通运输工程—船舶与海洋工程]