生活污水系统按排放形式可分为:重力式和真空式。真空式生活污水系统不同于传统的重力式生活污水系统,由于其管径小、占用的空间小、冲洗水量少,整个系统重量轻,因此适用于大型客船、渡船以及有特殊要求的货船等。%The Vacuum Sanitation System is different from gravity sanitation system. The pipes in the system use little room, and have a little weight, and use little water. So, many ships want to use this system.
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