天目山隧道施工廢水特征分析及處理
[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.
【作者單位】: 中鐵隧道集團(tuán)有限公司杭州公司;中國(guó)計(jì)量大學(xué);杭州萬(wàn)向職業(yè)技術(shù)學(xué)院;浙江大學(xué);
【分類號(hào)】:U455;X731
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