天目山隧道施工废水特征分析及处理
发布时间：2019-01-16 05:01
【摘要】：天目山隧道进口段毗邻"新安江—富春江—千岛湖"国家级风景名胜区,为避免隧道施工废水影响当地生态环境和饮水安全,对其特征进行分析,发现废水中悬浮物(SS)和酸碱度(p H)超标,且含有重金属。部分水样中汞(Hg)和镍(Ni)超标(其中Hg的超标频次较高),其他重金属未超标,废水中出现重金属与地质有关。采用"初沉+混凝+沉淀+过滤"工艺处理废水,初沉主要去除大颗粒悬浮物,混凝、沉淀主要去除细颗粒物和重金属。结果表明:处理后的废水各指标均满足排放要求,处理成本为0.51元/m3,经济性较好。
[Abstract]:The entrance section of Tianmu Mountain Tunnel is adjacent to the "Xin 'anjiang-Fuchun River-Qiandao Lake" national scenic spot. In order to avoid the tunnel construction wastewater affecting the local ecological environment and drinking water safety, the characteristics are analyzed. It was found that the suspended substance (SS) and pH (p H) in the wastewater exceeded the standard and contained heavy metals. The mercury (Hg) and nickel (Ni) in some water samples exceeded the standard (among them, the frequency of Hg exceeded the standard was higher), other heavy metals did not exceed the standard, and the occurrence of heavy metals in waste water was related to geology. The process of "primary sedimentation coagulation sedimentation filtration" was used to treat wastewater. The primary sedimentation was mainly used to remove large particle suspended matter, coagulation, and precipitation to remove fine particles and heavy metals. The results show that each index of the treated wastewater meets the requirement of discharge, the cost of treatment is 0.51 yuan / m3, and the economy is good.
【作者单位】： 中铁隧道集团有限公司杭州公司;中国计量大学;杭州万向职业技术学院;浙江大学;
【分类号】：U455;X731
[Abstract]:The entrance section of Tianmu Mountain Tunnel is adjacent to the "Xin 'anjiang-Fuchun River-Qiandao Lake" national scenic spot. In order to avoid the tunnel construction wastewater affecting the local ecological environment and drinking water safety, the characteristics are analyzed. It was found that the suspended substance (SS) and pH (p H) in the wastewater exceeded the standard and contained heavy metals. The mercury (Hg) and nickel (Ni) in some water samples exceeded the standard (among them, the frequency of Hg exceeded the standard was higher), other heavy metals did not exceed the standard, and the occurrence of heavy metals in waste water was related to geology. The process of "primary sedimentation coagulation sedimentation filtration" was used to treat wastewater. The primary sedimentation was mainly used to remove large particle suspended matter, coagulation, and precipitation to remove fine particles and heavy metals. The results show that each index of the treated wastewater meets the requirement of discharge, the cost of treatment is 0.51 yuan / m3, and the economy is good.
【作者单位】： 中铁隧道集团有限公司杭州公司;中国计量大学;杭州万向职业技术学院;浙江大学;
【分类号】：U455;X731
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