Mobile Toilet Fecal Treatment System
Common methods for mobile toilet fecal treatment systems include chemical treatment, anaerobic digestion, compression and storage, multi-functional sewage outlet cleaning, mechanical treatment, water-flush and non-water-flush suction, circulating water flushing, dry packing, foam sealing, microbial decomposition, three-chamber septic tanks, vacuum suction, and packing treatment, etc..
Chemical treatment involves adding chemical agents to decompose feces, control odors, and promote decomposition. The treated feces are further processed by equipment or sewage systems. Anaerobic digestion utilizes microorganisms to decompose feces, producing biogas (energy) and fertilizer (for agriculture/horticulture), reducing volume, and delaying treatment needs. Compression and storage reduce fecal volume through compression, suitable for scenarios such as camping or remote construction sites where access to treatment facilities is limited for extended periods. Multi-functional sewage outlets are equipped with fecal storage tanks or pre-installed septic tanks, requiring regular manual cleaning to maintain hygiene.
Mechanical treatment employs specialized equipment for solid-liquid separation, decomposition, and disinfection, minimizing environmental impact and ensuring hygiene and safety. Water-flush mobile toilets have water-flushing devices with relatively small sewage tank capacities, requiring timely suction; non-water-flush models lack flushing devices, with feces directly collected in bottom sewage tanks, necessitating higher suction frequencies. Circulating water-flush models are equipped with intermittent aerobic and anaerobic treatment devices, adding biological strains to accelerate fermentation and decomposition. The treated sewage is recycled for flushing, conserving water resources and reducing suction times.
Dry packing models lack water-flushing devices, with feces collected in biodegradable plastic bags. A new bag is automatically replaced after each use, and the used bags are collected and transported to treatment plants, conserving water and facilitating waste collection. Foam sealing models use foam generated from a foaming liquid mixture instead of water for flushing, covering the inner sides of the toilet bowl without odors. The system only requires hand-washing water to meet foaming water needs, maximizing water conservation. Microbial models separate feces through solid-liquid separation devices, which then enter fermentation tanks. Mixed with initial ingredients, sawdust, and biological strains, the feces decompose into CO₂ and H₂O under microbial action, with a degradation rate of ≥99%. Urine is filtered and enters a comprehensive treatment system for aeration, evaporation, and decolorization.
Three-chamber septic tanks achieve gradient treatment through three sealed tanks in series. The first tank retains 70% of solid sediments, the second tank decomposes remaining organic matter, and the third tank stores harmlessly treated fecal liquid. The entire process takes more than 30 days, ensuring a ≥95% kill rate of parasite eggs and intestinal pathogens. Vacuum suction technology uses negative pressure to rapidly suck feces into sealed storage tanks, preventing drips and odor diffusion. Packing treatment technology uses biodegradable films to individually wrap feces, facilitating subsequent centralized transportation and treatment.
