基于无机颗粒基质的好氧颗粒污泥快速培养研究——以牡蛎壳和硅藻土为例

Research on the Rapid Cultivation of Aerobic Granular Sludge Based on Inorganic Particle Matrices—Taking Oyster Shells and Diatomite as Examples

摘要: 本文以序批式活性污泥法反应器为实验装置，开发了一种以硅藻土、牡蛎壳作为无机颗粒基质的好氧颗粒污泥(aerobic granular sludge, AGS)快速培养工艺，并考察了其对污染物的去除效能。通过优化基质粒径等参数，成功实现了AGS的高效形成与长期稳定运行。结果表明，添加牡蛎壳的AGS在化学需氧量(COD)与总磷(TP)去除方面表现突出，COD最高去除率达95.87%，TP去除率稳定维持在60%以上。形貌观察表明，成熟的AGS呈现椭球形结构，表面呈多孔形态，有利于微生物附着及物质传递。本研究为AGS技术在市政污水、工业废水及中小城镇污水处理中的工程应用提供了技术参考。

Abstract: This study employed a sequential batch reactor (SBR) as the experimental apparatus to develop a rapid cultivation process for aerobic granular sludge (AGS) using diatomaceous earth and oyster shells as inorganic granular substrates, while evaluating its pollutant removal efficiency. Through optimization of parameters such as substrate particle size, the process successfully achieved efficient AGS formation and long-term stable operation. Results indicate that AGS supplemented with oyster shells demonstrates outstanding removal of chemical oxygen demand (COD) and total phosphorus (TP), achieving a maximum COD removal rate of 95.87% and maintaining stable TP removal above 60%. Morphological observations reveal mature AGS exhibits helical or ellipsoidal structures with porous surfaces, facilitating microbial attachment and mass transfer. This study provides technical references for the engineering application of AGS technology in municipal sewage, industrial wastewater, and small-to-medium town wastewater treatment.