针对地铁盾构出来的大量渣土废泥浆污染环境,不便施工的现状,本文将渣土废泥浆作为研究对象,通过沉降速率、浊度以及絮体大小等指标研究无机絮凝剂(氢氧化钙、氯化铁以及两者的复掺)对渣土废泥浆絮凝效果影响.研究结果表明:(1)含水率为99%的渣土废泥浆,单掺氢氧化钙、氯化铁的最佳掺量分别为0.32%、1.70%;复掺时最佳掺量分别为0.18%、1.30%;(2)含水率为98%的渣土废泥浆,单掺氢氧化钙、氯化铁的最佳掺量分别为0.36%、2.50%;复掺时最佳掺量分别为0.24%、1.50%;(3)含水率为97%的渣土废泥浆,单掺氢氧化钙、氯化铁的最佳掺量分别为0.38%、4.30%;复掺时最佳掺量分别为0.23%、1.00%.
At present, the mud disposal from subway pollutes the environment seriously and has negative effect on construction.The mud disposal will be regarded as the research object in this test.The flocculation effects of inorganic flocculant (calcium hydroxide, ferric chloride and the double mixing) on the mud disposal are researched.The results show that: (1) When the water content is 99%,the optimal dosage of calcium hydroxide and Ferric chloride solution is 0.32% and 1.70%,besides the optimal dosage of mixture (calcium hydroxide and Ferric chloride solution) is 0.18% and 1.30%.(2) When the water content is 98% the optimal dosage of calcium hydroxide and Ferric chloride solution is 0.36% and 2.50%, besides the optimal dosage of mixture (calcium hydroxide and Ferric chloride solution) is 0.24% and 1.50%.(3) When the water content is 97%, the optimal dosage of calcium hydroxide and Ferric chloride solution is 0.38% and 4.30%, besides the optimal dosage of mixture (calcium hydroxide and Ferric chloride solution) is 0.23% and 1.00%.
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