微波效应对畜禽废水磷素晶化过程的增效机制研究

Phosphorus crystallization process can be affected by coexisting matter in animal manure wastewater. Coexisting matter can decrease phosphorus crystallization efficiency due to the inhibition of crystal granulation, and decrease product phosphorus availability due to the adulteration of crystal product. In our project, phosphorus crystallization process in actual and synthetic animal manure wastewater by microwave enhancement treatment will be studied. The effect of microwave and coexisting matter on thermo-kinetics behavior of phosphorus crystallization will be examined by laser transmission response method, circulating fluidized crystallization method, and PHREEQC calculation. The microwave enhancement effect on phosphorus crystallization efficiency will be examined by standard sieve, SEM, XRD, and FTIR. The microwave enhancement effect on product phosphorus availability will be examined by water extraction test, soil leaching test, and pot trial test. The non-linear coupled relationship of microwave, coexisting matter, thermo-kinetics behavior of phosphorus crystallization, phosphorus crystallization efficiency and product phosphorus availability will be investigated by Artificial Neural Network modeling. The coexisting matter effect and microwave enhancement for thermo-kinetics behavior of phosphorus crystallization will be elucidated. The optimal microwave enhancement mechanism for phosphorus crystallization efficiency and product phosphorus availability will be elucidated. The mathematic modeling of microwave process control for phosphorus crystallization will be developed. The project results of phosphorus crystallization process will provide theoretical basis for phosphorus artificial recycle utilization and improve the develepment of circulation agriculture.

畜禽废水伴存物质会影响磷素晶化过程，干扰结晶造粒而降低晶化效能，干扰结晶产品晶体性质而降低磷素有效性。针对此问题，本项目围绕磷素晶化过程，通过模拟与实际畜禽废水比对方式，研究微波效应对磷素晶化的增效机制。采用激光透射响应法、循环流化结晶控制法等确定微波和伴存物质对磷素晶化过程热动力学行为的作用机理；采用标准筛分法、SEM、XRD、FTIR等分析微波效应对磷素晶化效能的调控机制；采用水溶性浸提法、土柱淋溶法、盆栽试验法等分析微波效应对产品磷素有效性的优化机制；采用人工神经网络模型考察微波、伴存物质、磷素晶化热动力学行为、磷素晶化效能和产品磷素有效性的非线性耦合关系。最终揭示磷素晶化过程热动力学行为的伴存物质影响特征和微波作用机理，阐明磷素晶化效能和产品磷素有效性的微波增效机制，建立磷素晶化过程的微波控制数学模型。项目结果将为磷素晶化技术在养分资源人工循环领域的应用提供支撑，推动循环农业发展。

畜禽废水伴存物质会影响磷素晶化过程，干扰结晶造粒而降低晶化效能，干扰结晶产品晶体性质而降低磷素有效性。针对此问题，本项目围绕磷素晶化过程，通过模拟与实际畜禽废水比对的方式，研究了微波效应对磷素晶化的增效机制。采用激光透射响应法、循环流化结晶控制法等确定了微波和伴存物质对磷素晶化过程热动力学行为的作用机理；采用标准筛分法、SEM、XRD、FTIR等分析了微波效应对磷素晶化效能的调控机制；采用水溶性浸提法、土柱淋溶法、盆栽试验法等分析了微波效应对产品磷素有效性的优化机制；采用人工神经网络模型考察了微波、伴存物质、磷素晶化热动力学行为、磷素晶化效能和产品磷素有效性的非线性耦合关系。最终揭示了磷素晶化过程热动力学行为的伴存物质影响特征和微波作用机理，阐明了磷素晶化效能和产品磷素有效性的微波增效机制，构建了磷素晶化过程的微波控制数学模型。项目结果为磷素晶化技术在养分资源人工循环领域的应用提供了支撑，推动循环农业发展。