Capacity of Mobile Toilets

The capacity of mobile toilets can be comprehensively evaluated from two aspects: the number of people served simultaneously and the capacity of the sewage storage tank, as detailed below:

Number of People Served Simultaneously: Determined by the Number of Toilet Cubicles and Turnover Rate

The capacity of mobile toilets is first reflected in the number of people served simultaneously, a metric closely related to the number of toilet cubicles and the turnover rate.

• Small Mobile Public Toilets: Typically equipped with 3-5 toilet cubicles, the theoretical maximum number of people served simultaneously is 3-5. Calculated based on the peak-hour turnover rate (each cubicle serving 8-12 people per hour), a small public toilet with 5 cubicles can serve 40-60 people per hour.
• Medium Mobile Public Toilets: With 6-10 toilet cubicles, the simultaneous service capacity increases to 6-10 people. Taking a 10-cubicle toilet as an example, it can serve 80-120 people per hour during peak hours, suitable for medium-scale events or construction sites.
• Large Mobile Public Toilets: Featuring more than 10 toilet cubicles, the simultaneous service capacity exceeds 10 people. Some toilets designed for large events can further expand the number of cubicles to over 20 through optimized layout, meeting the needs of high-density pedestrian flow.

The turnover rate is significantly influenced by the usage scenario: For instance, at large events like music festivals, where pedestrian flow is concentrated, the turnover rate of toilet cubicles may approach the upper limit (12 people per hour); whereas at construction sites, where usage frequency is lower, the turnover rate may drop below 8 people per hour.

Sewage Storage Tank Capacity: Classified by Usage and Design Differences

The capacity of the sewage storage tank directly affects the continuous usage time of mobile toilets and must be selected according to the usage scenario.

• Small Single-Unit Toilets: Commonly found in parks or temporary events, these toilets have a sewage storage tank capacity of approximately 200-300 liters. Based on an average daily usage of 50-100 people, they can operate for 1-2 days without needing to be emptied, suitable for short-term, low-frequency usage scenarios.
• Medium Trailer-Mounted Toilets: Used at construction sites or for long-term outdoor operations, these toilets have an increased sewage storage tank capacity of 400-600 liters. Through optimized structural design, they can operate for 3-5 days without needing to be emptied, reducing maintenance frequency and lowering operational costs.
• Large Container Toilets: Often seen at large events like music festivals, these toilets have a sewage storage tank capacity of 800-1000 liters. Some models are equipped with dual sewage storage tanks, extending service time through alternating usage and meeting high-intensity usage demands.

The design of the sewage storage tank capacity must balance space occupation and usage efficiency: For example, a 200-liter sewage storage tank used in a high-frequency scenario with an average daily usage of 200 people may require daily emptying; whereas a 1000-liter tank can still maintain a service cycle of over 2 days in a scenario with an average daily usage of 500 people.