可回收瓶的循环利用流程Returnable bottles: follow the loop and the exit

The diagram illustrates a simplified system in which empty glass bottles are collected, prepared for reuse and returned to customers through shops. It also shows a separate route for bottles that are unsuitable for further use. Overall, there are six main stages in the return loop, from collection to customer use and return. Inspection divides the flow: reusable bottles continue towards washing and refilling, whereas damaged bottles are taken out of circulation and sent for glass recycling. At the beginning of the sequence shown, empty bottles are collected and then inspected. Those identified as damaged leave the main route at this point. The remaining bottles are washed before moving to the refilling stage. The diagram does not show the subsequent treatment of the glass sent for recycling. After refilling, the bottles are delivered to shops, following the lower row from right to left. Customers then use and return them. The empty containers re-enter the cycle at collection, so a further inspection takes place before they can be washed and refilled again.