Mobile Toilet Fecal Treatment Process

The mobile toilet fecal treatment process mainly includes four methods: regular suction and centralized treatment, centralized collection and transportation treatment, on-site resource utilization treatment, and chemical degradation treatment.

Regular suction and centralized treatment: Mobile toilets are equipped with a sewage tank at the bottom to collect feces and sewage. When the capacity of the sewage tank reaches a certain limit, professional cleaning personnel will use vacuum suction trucks for regular suction. The sucked-out feces and sewage are transported to a specialized fecal treatment center, where they are converted into environmentally harmless substances through harmless methods such as biological degradation, chemical treatment, or physical treatment. These substances can be further converted into organic fertilizers for agricultural planting or used for other resource recycling, achieving waste resource utilization.

Centralized collection and transportation treatment: Before use, deodorants and flocculants are added to the fecal tank to reduce odors and the fluidity of the fecal liquid. After use, the sealed valve is closed to prevent leakage. Qualified sanitation or environmental protection companies use vacuum suction trucks to pump the feces into dedicated transfer tanks and then transport them to urban sewage treatment plants or fecal disposal stations. The end-stage treatment converts the feces into harmless reclaimed water and sludge through processes such as grid filtration, anaerobic fermentation, and aerobic treatment. After sludge dewatering, it can be used for composting or incineration, achieving waste reduction and harmlessness.

On-site resource utilization treatment: Biodegradable mobile toilets are equipped with microbial agents, such as compound Bacillus, which decompose feces into carbon dioxide, water, and a small amount of organic fertilizer through anaerobic/aerobic fermentation, eliminating the need for collection and transportation. The microbial agents need to be replenished every 3 to 6 months to maintain degradation efficiency. Some scenic spots or rural areas use biodegradable fecal bags to collect feces, which are then composted at high temperatures to kill pathogens and used as organic fertilizer for farmland, achieving on-site waste resource utilization.

Chemical degradation treatment: Strong oxidizing agents, such as sodium hypochlorite and potassium peroxymonosulfate composite salt, are added to quickly sterilize and decompose organic matter. The treated fecal liquid meets the tertiary discharge standard. Discharge into the municipal sewage network must comply with local environmental protection requirements. Small emergency mobile toilets use disposable degradation bags, which are sealed after adding chemical agents and can be temporarily stored for 7 to 10 days. They are then disposed of by professional institutions in a centralized manner, suitable for temporary or emergency scenarios.