水处理厂的管理和处置 残差已经变得更加昂贵和复杂 因为联邦政府、州政府和地方政府 指导方针和条例。这项研究试图发展 工厂残余物的物理和工程质量数据，以及 研究使用脱水残余物作为燃料的可行性 卫生填埋场覆盖物。 进行测试以确定物理和工程性能 两种水中明矾凝结残渣的性质 德克萨斯州阿灵顿的供应商。残余物颗粒细小 分布，高比电阻，高塑性指数，低 干容重和低剪切强度-使 它们不适合填埋场覆盖应用。 然而 将残余沉积物与天然表层土混合，改善了土壤的物理性质 残余物的性质，使混合物能够 用于填埋场覆盖。在测试的比例中 20%的残积和80%的天然土壤是最佳的 含水量、最大干容重和塑性极限 在可行范围内。 管理剩余物处置的众多法规可以 抬高成本，限制选择。这项研究为公用事业管理者提供了帮助 有益于剩余处置而非处置的应用 将垃圾填埋场中的残余物作为废物处理或排放 进入污水管道。包括16个参考文献、表格和图表。

Management and disposal of water treatment plant residuals have become more expensive and complicated because of numerous federal, state, and local guidelines and regulations. This research sought to develop physical and engineering quality data on plant residuals and to investigate the feasibility of using dewatered residuals as sanitary landfill cover. Testing was conducted to determine the physical and engineering properties of alum-coagulated residuals from two water suppliers in Arlington, Texas. The residuals had fine particle size distribution, high specific resistance, high plasticity index, low dry unit weight, and low shear strength - properties that rendered them unsuitable for landfill cover application. However, blending the residuals with natural topsoil improved the physical properties of the residuals to such a level that the mixture could be used for landfill cover. Of the proportions tested, a blend of 20% residuals and 80% natural soil resulted in the optimum moisture content, maximum dry unit weight, and a plastic limit within the workable range. The numerous regulations governing residual disposal can drive up costs and limit options. This study offers utility managers a beneficial application for residual disposal rather than disposing of residuals in landfills as a waste product or discharging them into wastewater sewer lines. Includes 16 references, tables, figures.