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| 秸秆排水体降解与疏浚淤泥生态加固相互作用研究 |
| Study on the Interaction Between Degradation of Straw Drainage Body and Ecological Reinforcement of Dredged Silt |
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| DOI：10.16018/j.cnki.cn32-1650/n.202301001 |
| 中文关键词: 秸秆排水体 疏浚淤泥 真空预压 复耕 |
| 英文关键词: straw drainage body dredged silt vacuum preloading rehabilitation |
| 基金项目: |
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| 中文摘要: |
| 通过水平秸秆排水体真空预压疏浚淤泥模型试验，分析降解后的秸秆和加固后的疏浚泥元素含量的变化规律，研究秸秆排水体降解与疏浚淤泥生态加固的相互作用机制。结果表明: 降解后秸秆排水体中的纤维素、半纤维素以及木质素的总质量降幅达16. 7%；疏浚淤泥中的有机质含量，以及C、N、S、K和P元素含量明显增加，且随着距秸秆排水体距离的增加以一定梯度逐渐递减。疏浚淤泥为秸秆排水体提供了降解环境，秸秆降解产物的沉淀和聚集丰富了淤泥的养分，表明该技术有利于真空加固后疏浚淤泥的快速复耕，值得推广应用。 |
| 英文摘要: |
| Through the model test of vacuum preloading dredged sludge with horizontal straw drainage body, the change law of element content in degraded straw and reinforced dredged sludge was analyzed, and the interaction mechanism between degradation of straw drainage body and ecological reinforcement of dredged sludge was studied. The results showed that the total mass of cellulose, hemicellulose and lignin in straw drainage body decreased by 16. 7% after degradation. The content of organic matter and elements C, N, S, K and P in dredged sludge increased obviously. And with the increase of the distance from the straw drainage body, it gradually decreases with a certain gradient. Dredged sludge provides a degradation environment for straw drainage body, and the sedimentation and accumulation of straw degradation products enrich the nutrients of sludge, indicating that this technology is conducive to the rapid rehabilitation of dredged sludge after vacuum consolidation, and is worthy of popularization and application. |
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