Portable Sewage Druge Concentrator can be used in sewage monitoring and traceability work. In the process of sample processing, the flow rate of various solutions through the column is automatically controlled, and it has functions such as negative pressure elution, continuous injection of large volumes, and automatic enrichment. Ensure the recovery and purity of target analytes, reduce relative deviation, and avoid cross-contamination between samples. The enrichment results can be used for test strip detection, and the equipment is easy to operate and maintain.