Mobile Toilet Feces Decomposition
The decomposition of feces in mobile toilets is mainly achieved through microbial treatment, anaerobic and aerobic biological treatment, chemical treatment, foam sealing and foaming technology, packaged treatment, and recirculating water flushing technology.
Microbial treatment technology: This technology separates feces from urine using a solid-liquid separation device. The feces enter a fermentation tank and are mixed with sawdust and biological strains. Under the control of an automatic temperature control system, the feces are decomposed into carbon dioxide and water in a high-temperature environment, with a degradation rate of over 99%. Some microbial strains can directly act on the feces, decomposing them into water vapor and carbon dioxide, requiring almost no manual cleaning. Only regular replenishment of the strains is needed to maintain system operation.
Anaerobic and aerobic biological treatment: During anaerobic treatment, microorganisms decompose feces to produce biogas (which can be used as an energy source) and fertilizer (which can be used in agriculture or horticulture). Aerobic treatment accelerates the decomposition process through biofilm technology and combines with intermittent treatment devices to improve efficiency. The combined action of these two methods enables the resource utilization of feces.
Chemical treatment: Chemical agents are added to decompose excreta, control odors, and promote decomposition reactions. The treated excreta are further processed through specialized equipment or directly discharged into the sewage system for centralized purification. This method is suitable for scenarios with high requirements for treatment speed, but attention should be paid to the selection and dosage control of chemical agents.
Foam sealing and foaming technology: Foam generated by a foaming liquid mixture covers the inside of the toilet bowl, forming a seal to prevent odor emission. This technology requires only a small amount of water to operate, significantly saving water resources. The feces are ultimately collected and processed in a feces storage tank or biochemical treatment tank, making it suitable for areas with water shortages or inconvenient sewage discharge.
Packaged treatment: Biodegradable plastic bags are used under the toilet fixtures to collect excreta. After each use, the bags are automatically packaged and sealed. Sanitation workers regularly replace the bags and take them away for disposal. This method does not require a water source or sewage pipes and is easy to operate, but regular cleaning of the bags is necessary to avoid pollution.
Recirculating water flushing technology: Intermittent aerobic and anaerobic treatment devices are equipped, and biological strains are added to accelerate the fermentation and decomposition of fecal sewage. The treated water is purified through filtration, aeration, and other processes and then recirculated for toilet flushing, achieving water resource recycling. This technology is suitable for mobile toilet scenarios with high water-saving requirements.
