Water Supply and Drainage Requirements for Mobile Toilets
The water supply and drainage requirements for mobile toilets mainly include two aspects: the water supply system and the sewage discharge system, as detailed below:
Water Supply System
There are generally two types of water supply systems for mobile toilets. One is the self-contained water tank type, where a clean water tank is installed on the top of the toilet, with a capacity typically ranging from 100 to 300 liters. This water supply method is achieved through either a water pump or gravity flow. Water pump supply ensures stable water supply at various positions and heights, while gravity flow utilizes the height difference between the water tank and the water usage point to allow water to flow naturally without additional power, although it requires reasonable design of the water tank height and pipe slope. The other type is the external water source type, which can be directly connected to the municipal water supply. This method ensures a continuous and stable water supply without concerns about insufficient water in the tank, but it requires ensuring that the water pipes at the connection points are well-sealed to prevent leaks. Additionally, some mobile toilets use water-saving flushing devices, consuming approximately 0.8 to 1.2 liters of water per flush, significantly saving water resources compared to traditional flushing devices and meeting environmental protection and sustainable development requirements.
Sewage Discharge System
Conventional water-flushing mobile toilets require connection to water supply and drainage pipes, with sewage discharged manually or automatically through sensors. The sewage is discharged into septic tanks or municipal sewage networks, necessitating reasonable slope design of the sewage pipes to ensure smooth sewage discharge and prevent blockages. Vacuum sewage systems utilize negative pressure principles, using vacuum pumps to suck sewage and waste into collection containers. This system offers high sewage discharge efficiency and effectively reduces odor emissions. Water-storage sewage systems discharge waste into storage tanks through water flushing. When the sewage in the public toilet reaches a preset water level, the flushing device automatically activates, flushing the waste into the storage tank, which requires regular cleaning. The traditional method involves placing a sewage tank at the bottom of the mobile toilet, typically with a capacity of 200 to 500 liters, requiring regular sewage suction. During sewage suction, appropriate equipment and operating methods should be selected to prevent sewage leaks. Modern environmentally friendly products employ foam sealing or microbial degradation technologies. Foam sealing prevents odor emissions, while microbial degradation technology breaks down waste into harmless substances, significantly reducing sewage volume and odor. Meanwhile, mobile toilets should be equipped with anti-clogging pipe systems and have independent sewage outlets at the bottom for easy regular cleaning. It is recommended to choose models with anti-overflow designs to prevent sewage overflow.
