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[中图分类号] TU 991.21 b b b b b [文献标志码] B b b b b b [文章编号] 1001–523X(2020)20–0127–03
Application of "Integrated Sludge Dewatering and Consolidation" Technology
in Dianchi Lake Sediment Dredging Project
Wang Yu-xia,Feng Yun
[Abstract ]The dredging project of the contaminated bottom of the Dian Lake is one of the important projects in our national lake
management. The external pollution have been controlled to a certain extent through the river renovation, the new pipeline built for
pollution cut-off and the new expansion of urban water purification plant and other measures, and now the endogenous pollution has
become the main source of pollution. The first and second phases of the project implementation have achieved remarkable benefits in
eliminating endogenous pollution, improving the water quality of the Dian Lake and restoring the ecological environment. In order to
consolidate and expand the results of dredging,the third phase of the project is done currently using the latest domestic process —— "silt
dewatering and solidification integration" technology , to achieve the silt "reduction, harmless, stable" treatment and "resource" disposal.
The successful application of dredging technology provides a good reference for the disposal of mud at the bottom of the city lake in the
future.
[Keywords ]Dian Lake; bottom silt dredged ;silt dewatering and solidification integration ; rate of water content ;tail water
discharge ;primary standard
“淤泥脱水固结一体化”技术在滇池底泥
疏浚工程中的应用
王宇霞,冯云
(云南省市政工程质量监督站,昆明 650228;河北供水有限责任公司,石家庄 050062 )
收稿日期 : 2020–05–10
作者简介: 王宇霞(1975—),女,云南昆明人,高级工程师,主要研究
方向为市政基础设施工程施工技术及工程质量监督管理。
滇池底泥疏浚工程是滇池污染治理项目的重要组成部分。
前几期工程采用的是堆场堆存方式处理底泥,该工艺具有底
泥排放速度快,工艺成熟,造价相对较低等优点。但滇池外海
底泥属于高有机质的淤泥质土类,天然含水率高达 207.03%,
疏浚后底泥含水率仍达到96%,仅通过堆放自然排水或辅以投
药沉淀措施,其干化固结过程缓慢,体积、质量压缩比率小,
造成后续运输困难,所需堆放淤泥的场地占地面积大,还需
建设大量围堰作为围挡。目前工程面临的实际情况是土地资
风区域风场环境较差、散热效果差等有很大关系。建议通过
调整测点I(a)、测点 I(b)、测点 II(m)、测点 II(n)建筑
布局、绿化形式等内容,进行风场环境的专项设计,以缓解
上述区域温度较高的现象。
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“淤泥脱水固结一体化”技术在滇池底泥疏浚工程中的应用(论文).pdf