Hubei Trailer-mounted Mobile Toilet

Customizing a trailer-mounted mobile toilet in Hubei requires comprehensive consideration of multiple factors, covering key aspects such as the trailer chassis, sewage circulation system, wall materials, and ventilation system.

The trailer chassis serves as the foundation and needs to use hot-dip galvanized steel frames to resist corrosion in humid environments. The load-bearing design should be based on stress calculations according to the actual positions of the weights of the internal water tank, septic tank, and equipment in the toilet. For example, if a 1000-liter freshwater tank is placed at the front of the trailer, the thickness of the chassis longitudinal beams should be increased from the conventional 6 millimeters to 8 millimeters. The choice of wheelbase affects maneuverability. In the mountainous areas of western Hubei, the wheelbase should be controlled within 3 meters to facilitate driving on narrow village roads. In the Jianghan Plain, a long wheelbase (over 4.5 meters) can enhance straight-line driving stability and reduce the risk of side-tilting during emergency braking.

The sewage circulation system is the core and is equipped with an independent system consisting of a solid-liquid separation chamber, a microbial degradation tank, and a freshwater recovery device. The solid-liquid separation chamber uses cyclone separation technology. In the microbial degradation tank, anaerobic bacteria decompose organic pollutants into carbon dioxide and water at temperatures between 25 and 35℃. The volume of residues is reduced by more than 70%. After being adsorbed by an activated carbon filter layer to remove odor molecules, the water is reused for toilet flushing, with a circulation rate of about 85% of the daily water consumption. In winter in Hubei, where temperatures are low, heating tapes need to be wrapped around the outer walls of the pipes to prevent freezing.

For wall materials, fiberglass-reinforced plastic (FRP) panels are chosen for their resistance to acid and alkali corrosion, but they have a high thermal conductivity. In the hot and humid summers of Hubei, when customizing, a 5-centimeter-thick polyurethane foam layer should be laminated on the inner side of the FRP panels to reduce thermal conductivity, and double-sided aluminum foil reflective films should be installed to block thermal radiation. In mountainous areas such as Yichang and Enshi, butyl rubber sealing strips should be used at the wall joints to prevent rainwater from flowing backward and causing panel delamination. The hardware for the toilet doors should be made of 304 stainless steel to adapt to high-humidity environments.

In terms of the ventilation system, odor control in enclosed spaces relies on an active ventilation system. Conventionally, exhaust fans are installed on the top of the toilet, but the impact of the prevailing wind direction in summer in Hubei on the exhaust efficiency should be considered. In addition, there are also related products for trailer-mounted eco-friendly toilets in scenic spots in Hubei, such as the Fuhuajicheng FHJC - 02 from Dalian Fuhua Hengrun Industrial Co., Ltd., which can be customized and is made of anti-corrosion wood with various practical functions.