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Curing agent for treating acidic lead-polluted soil, and preparation method and treatment method thereof
The invention discloses a curing agent for treating acidic lead polluted soil and a preparation method and a treatment method thereof. The curing agent comprises the following components: fly ash, metakaolin and aluminum dihydrogen phosphate. The ratio L/S of the mass of the aluminum dihydrogen phosphate solution to the sum of the mass of the fly ash and the metakaolin is (0.3-0.45): 1. The method for treating the acidic lead polluted soil comprises the following steps: mixing the fly ash, the metakaolin and the aluminum dihydrogen phosphate, mixing with the acidic lead polluted soil, stirring, forming and curing to obtain the acidic lead solidified polluted soil. The prepared curing agent is applied to acid lead polluted soil treatment, when the curing period is 7 days, the lowest Pb < 2 + > leaching concentration of the cured polluted soil is 0.0031 mg/L, when the curing period is 28 days, the lowest Pb < 2 + > leaching concentration of the cured polluted soil is 0.02 mg/L, and the curing agent has great potential in the aspects of pollutant adsorption treatment and pollutant curing/stabilizing treatment.
本发明公开了一种处理酸性铅污染土的固化剂、其制法及处理方法，该固化剂包括以下组分：粉煤灰、偏高岭土、磷酸二氢铝；磷酸二氢铝溶液的质量与粉煤灰和偏高岭土的质量之和的比值L/S为0.3～0.45：1。处理酸性铅污染土的方法为，将粉煤灰、偏高岭土和磷酸二氢铝混合，并与酸性铅污染土混合，搅拌，成型，养护，得到酸性铅固化污染土。本发明制备的固化剂应用于酸性铅污染土处理，养护龄期为7d时，固化污染土的Pb2+浸出浓度最低为0.0031mg/L，养护龄期为28d时，固化污染土的Pb2+浸出浓度最低为0.02mg/L，在污染物吸附处理和污染物固化/稳定化处理方面具有较大潜力。
Curing agent for treating acidic lead-polluted soil, and preparation method and treatment method thereof
The invention discloses a curing agent for treating acidic lead polluted soil and a preparation method and a treatment method thereof. The curing agent comprises the following components: fly ash, metakaolin and aluminum dihydrogen phosphate. The ratio L/S of the mass of the aluminum dihydrogen phosphate solution to the sum of the mass of the fly ash and the metakaolin is (0.3-0.45): 1. The method for treating the acidic lead polluted soil comprises the following steps: mixing the fly ash, the metakaolin and the aluminum dihydrogen phosphate, mixing with the acidic lead polluted soil, stirring, forming and curing to obtain the acidic lead solidified polluted soil. The prepared curing agent is applied to acid lead polluted soil treatment, when the curing period is 7 days, the lowest Pb < 2 + > leaching concentration of the cured polluted soil is 0.0031 mg/L, when the curing period is 28 days, the lowest Pb < 2 + > leaching concentration of the cured polluted soil is 0.02 mg/L, and the curing agent has great potential in the aspects of pollutant adsorption treatment and pollutant curing/stabilizing treatment.
本发明公开了一种处理酸性铅污染土的固化剂、其制法及处理方法，该固化剂包括以下组分：粉煤灰、偏高岭土、磷酸二氢铝；磷酸二氢铝溶液的质量与粉煤灰和偏高岭土的质量之和的比值L/S为0.3～0.45：1。处理酸性铅污染土的方法为，将粉煤灰、偏高岭土和磷酸二氢铝混合，并与酸性铅污染土混合，搅拌，成型，养护，得到酸性铅固化污染土。本发明制备的固化剂应用于酸性铅污染土处理，养护龄期为7d时，固化污染土的Pb2+浸出浓度最低为0.0031mg/L，养护龄期为28d时，固化污染土的Pb2+浸出浓度最低为0.02mg/L，在污染物吸附处理和污染物固化/稳定化处理方面具有较大潜力。
Curing agent for treating acidic lead-polluted soil, and preparation method and treatment method thereof
一种处理酸性铅污染土的固化剂、其制法及处理方法
PU SHAOYUN (author) / XU BOMIN (author) / WU ZHONGHU (author) / DUAN WEI (author) / SHEN ZEWEI (author) / YAO HUIRAN (author)
2024-10-29
Patent
Electronic Resource
Chinese
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