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Mobile Toilet Gray Water Tank

Admin September 21, 2026

The mobile toilet gray water tank is a storage device used to collect non-fecal wastewater such as hand-washing wastewater or flushing water, featuring differentiated designs and functions in different types of mobile toilets.

Gray water tanks in trailer-mounted mobile toilets These gray water tanks usually form a sewage storage system together with black water tanks (which collect fecal wastewater). Their core function is to collect wastewater generated by sinks, faucets, etc., preventing direct discharge from causing environmental pollution. Some high-end models integrate small-scale sewage treatment modules, such as membrane bioreactors, which achieve water recycling through biodegradation and membrane filtration technologies, significantly reducing water consumption. The capacity design of gray water tanks needs to be determined based on the foot traffic in the usage scenarios (such as scenic spots and construction sites) to ensure effective storage of wastewater between two maintenance intervals.

Gray water tanks in marine vacuum toilet systems Taking the Norwegian JETS 080806534 model as an example, its gray water tank has a volume of 8L and mainly serves a dual function: firstly, temporarily storing flushing water to reduce the need for frequent drainage; secondly, acting as a buffer device for air pressure regulation to maintain the stability of the vacuum system. The material is marine-specific polyethylene, which is resistant to seawater corrosion and has low-temperature stability. The wall thickness is optimized to 3-5 millimeters, balancing strength and lightweight requirements. The interface adopts an internationally recognized quick-connect clamp structure, and the sealing ring is made of ethylene propylene rubber material to ensure reliable sealing in a vibrating environment. In addition, it is equipped with a liquid level sensor that triggers an alarm when the water level reaches the threshold, prompting timely cleaning.

Application of intelligent monitoring technology The new type of gray water tank monitors the internal vacuum degree through integrated pressure sensors, and the data is transmitted to the control center via the marine Internet of Things. This design allows for real-time monitoring of the operating status of the gray water tank. For example, abnormal vacuum degrees may indicate pipe blockages or seal failures, and the system can provide early warnings and arrange maintenance in advance to prevent faults from expanding. Intelligent monitoring not only improves equipment reliability but also reduces the cost of manual inspections, making it especially suitable for large ships or mobile toilets that are unattended for long periods.