Mobile Toilet Waste

The treatment of mobile toilet waste forms a closed-loop management system through three stages: collection, storage, and removal and disposal, with specific methods varying by toilet type.

1. Collection Stage

Different types of mobile toilets have distinct waste collection methods:

• Flush Type: Waste is flushed by water flow into an integrated storage tank at the bottom, typically made of high-strength fiberglass or polyethylene, featuring anti-corrosion and anti-leakage properties.
• Packaging Type: Waste is sealed in dedicated collection bags or buckets, preventing contact with the outside environment and reducing odor diffusion.
• Biodegradable Type: Microorganisms in the tank initially decompose the waste, reducing the difficulty of subsequent treatment.
• Waterless Suction Type: Waste is directly collected in a bottom sewage tank, suitable for water-scarce environments.
• Foam Sealing Type: Foam generated by mixing a foaming agent covers the inside of the toilet bowl, with waste collected in a specific device, reducing water usage for flushing.
• Microbial Type: Solid and liquid waste are separated by a solid-liquid separation device, with urine entering a comprehensive treatment system and feces undergoing biological decomposition.

2. Storage Stage

During the storage stage, it is essential to ensure the safety and sealing of the waste. Storage tanks or sewage tanks are typically made of corrosion-resistant materials and equipped with sealed delivery and suction ports to prevent leakage and odor diffusion. During storage, waste is temporarily sealed, awaiting subsequent removal or treatment.

3. Removal and Disposal Stage

The final disposal method is selected based on the toilet type and waste characteristics:

• Professional Suction Removal: A fecal suction truck uses a vacuum pump and hose to suction waste from the storage tank into a tanker, which is then transported to a sewage treatment plant or fecal treatment center for harmless treatment and discharge upon meeting standards.
• Packaging Disposal: Sealed waste bags or buckets are removed as a whole and transported as special solid waste to a garbage disposal station for harmless treatment through incineration or landfilling.
• Utilization of Biodegraded Products: Fully decomposed waste can be handed over to professional institutions for use as green compost, achieving resource utilization.
• Recirculating Flush Type Treatment: Intermittent aerobic and anaerobic devices and biofilm technology accelerate the fermentation and decomposition of fecal sewage, which is then filtered and recirculated for toilet flushing.
• Microbial Recirculating Treatment: Urine is treated through aeration, evaporation, decolorization, and other processes to form reclaimed water, which is then used to flush the urinal, forming a closed loop.

In addition, simple mobile toilets may employ chemical treatment (to decompose waste and control odors), anaerobic digestion (to produce biogas and fertilizer), compressed storage (to reduce volume and delay treatment), or mechanical treatment (for solid-liquid separation and disinfection).