Slag is difficult to treat quantitatively due to the formation of a molten mixture in the carbonization process of high-salinity organic wastewater. Thus, aiming at solving this difficulty, the effects of metal oxide additives, additive ratio, furnace burden ratio, and carbonization temperature on the carbonization and coking of high-salinity organic wastewater are systematically analyzed. The analysis is performed using scanning electron microscopy, X-ray diffraction, and Vickers hardness tests. The results show that all five metal oxide additives can reduce the hardness of carbonized products. The relative effect of reducing the coked hardness is as follows: MgO > CaO > kaolin > Fe2O3 > Al2O3. Thus, the effect of MgO on reducing the coking hardness is stronger than that of the other four metal oxides, reducing the hardness of carbonized products by approximately 81%. Furthermore, the adding charge can reduce the hardness index by at least 60%. When the carbonization temperature is higher than 800°C, the hardness index of the carbonized product decreases by approximately 5% each 50°C of increase in temperature. This study shows that the addition of metal oxides can effectively reduce the hardness of coking during the treatment of high-salt organic wastewater by carbonization and oxidation and provide theoretical support for the subsequent treatment of high-salt organic wastewater by carbonization and oxidation.

中文翻译：

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金属氧化物对高盐度有机废水碳化和焦化的影响

高盐度有机废水在碳化过程中会形成熔融混合物，导致炉渣难以定量处理。为此，针对这一难点，系统分析了金属氧化物添加剂、添加剂配比、炉料配比、炭化温度对高盐有机废水炭化焦化的影响。使用扫描电子显微镜、X 射线衍射和维氏硬度测试进行分析。结果表明，五种金属氧化物添加剂均能降低碳化产品的硬度。降低焦化硬度的相对影响如下：MgO>CaO>高岭土>Fe2O3>Al2O3。因此，MgO降低焦化硬度的作用强于其他四种金属氧化物，将碳化产品的硬度降低约 81%。此外，添加电荷可使硬度指数降低至少 60%。当碳化温度高于800℃时，温度每升高50℃，碳化产品的硬度指数下降约5%。本研究表明，在碳化氧化处理高盐有机废水过程中，加入金属氧化物可有效降低焦化硬度，为后续碳化氧化处理高盐有机废水提供理论支持。温度每升高 50°C，碳化产品的硬度指数降低约 5%。本研究表明，在碳化氧化处理高盐有机废水过程中，加入金属氧化物可有效降低焦化硬度，为后续碳化氧化处理高盐有机废水提供理论支持。温度每升高 50°C，碳化产品的硬度指数降低约 5%。本研究表明，在碳化氧化处理高盐有机废水过程中，加入金属氧化物可有效降低焦化硬度，为后续碳化氧化处理高盐有机废水提供理论支持。