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题目：Improving phosphate removal of sand inltration system using
alkaline fly ash
摘要：Septic tank effluent is customarily disposed of by soil infiltration. Coarse, sandy soil such as those found in Perth,
Western Australia, exhibit low attenuation capabilities for phosphate (PO3ÿ 4 ) during effluent infiltration. Amendment of such soil with different amounts of alkaline precipitator and lagoon fly ashes was investigated as a means of reducing phosphorus (P) leakage to ground water. Alkaline precipitator fly ash possessed the highest P sorption capacity in termsof its Langmuir and Freundlich isotherm parameters during initial batch tests. The test materials were repeatedly contacted with fresh PO3ÿ 4 solutions over 90 contacting cycles to gain a better indication of long-term P sorption capability. Again, precipitator fly ash exhibited higher P sorption capacity than lagoon fly ash and Spearwood sand. Column studies assessed the
题目：Improving phosphate removal of sand inltration system using
alkaline fly ash
摘要：Septic tank effluent is customarily disposed of by soil infiltration. Coarse, sandy soil such as those found in Perth,
Western Australia, exhibit low attenuation capabilities for phosphate (PO3ÿ 4 ) during effluent infiltration. Amendment of such soil with different amounts of alkaline precipitator and lagoon fly ashes was investigated as a means of reducing phosphorus (P) leakage to ground water. Alkaline precipitator fly ash possessed the highest P sorption capacity in termsof its Langmuir and Freundlich isotherm parameters during initial batch tests. The test materials were repeatedly contacted with fresh PO3ÿ 4 solutions over 90 contacting cycles to gain a better indication of long-term P sorption capability. Again, precipitator fly ash exhibited higher P sorption capacity than lagoon fly ash and Spearwood sand. Column studies assessed the
改善除磷砂inltration系统中的应用
碱性粉煤灰
化粪池出水是惯常处置由土壤水分入渗。粗，沙质土壤，例如那些发现在柏斯，
澳大利亚西部，展品低衰减的能力，磷酸盐（ po3ÿ 4 ）在污水渗透。修订这种土壤与不同数量的碱性除尘器和泻湖飞灰被调查，作为一种手段，减少磷（ P ）渗漏到地下水。碱性除尘器粉煤灰拥有最高的p吸附能力在termsof其Langmuir和Freundlich等温线参数期间，首批测试。测试材料，反复接触新鲜po3ÿ 4解决方案，超过90接触周期，以便更好地显示长期p的吸附能力。再次，除尘器粉煤灰展示了较高的p吸附能力比泻湖粉煤灰和spearwood砂。列研究评估的影响，各种应用率碱性除尘器和泻湖飞灰上的P清除化粪池出水。化粪池出水是适用于为4厘米/天，以一栏为12周。浓度的P进行了监测，在该栏的污水。所有粉煤灰柱更有效率，在减少p移民相比，沙栏。增加各级粉煤灰在土壤中柱，导致增加p衰减。泻湖粉煤灰是劣除尘器粉煤灰的P去除;高的应用率粉煤灰所造成的堵塞渗透床上，显然是由于他们的低渗透。这是理性的5 ± 15 ％除尘器的粉煤灰，和不少于百分之三十的泻湖粉煤灰可以增加粗砂生产一床渗透，这将导致更好的质量比污水可以得到与未经处理的砂单。 ó 2000年Elsevier公司科学有限公司保留所有权利。