How to Handle Feces in Mobile Toilets
There are various methods for treating feces in mobile toilets, including water-flush and non-water-flush suction types, circulating water-flush types, dry-packing types, foam-sealing types, microbial types, as well as regular suction and centralized treatment methods.
Water-flush and Non-water-flush Suction Types: Water-flush mobile toilets are equipped with a water-flushing device, and the sewage tank is located at the bottom of the toilet. Non-water-flush types, on the other hand, have no flushing device, and excreta directly falls into the sewage tank at the bottom. Due to the limited capacity of the sewage tank, suction is required in a timely manner when a specified number of people have used it; otherwise, it is prone to overflow. The suctioned feces and sewage are usually transported to a specialized treatment center for harmless treatment.
Circulating Water-flush Type: This type of mobile toilet is equipped with an intermittent aerobic and anaerobic treatment device for fecal sewage, and biological strains are added. Through biofilm technology, it accelerates the fermentation and decomposition of fecal sewage, and then the treated sewage is recycled through a filtration device for flushing toilet fixtures. This method reduces the number of suction operations and saves water resources.
Dry-packing Type: Dry-packing mobile toilets have no water-flushing device, and excreta is received by a biodegradable plastic bag at the lower part of the toilet fixture. Each time a person uses it, the system automatically replaces the plastic bag with a new one. After use, these plastic bags are collected and transported to a treatment plant for disposal. This method does not require water flushing at all, saving water resources and facilitating the collection of waste.
Foam-sealing Type: Foam-sealing mobile toilets use foam generated by a foaming liquid mixture instead of toilet flushing water. The foam covers the inside of the toilet bowl, effectively preventing the emission of odors. This system can meet the water demand for foam generation simply by collecting hand-washing water, thus saving water resources to a certain extent.
Microbial Type: The excreta in microbial mobile toilets enters a solid-liquid separation device through an automatically opening toilet bowl. Urine is filtered and enters a comprehensive urine treatment system to be processed into reclaimed water for flushing the urinal; feces are separated and enter a fermentation tank, where they are decomposed under the action of microbial bacteria, ultimately separating into CO₂ and H₂O, with a degradation rate of over 99%.
Regular Suction and Centralized Treatment: Mobile toilets are equipped with sewage tanks at the bottom to collect feces and sewage. When a certain number of people have used them or the sewage tank reaches a certain capacity, professional cleaning personnel perform regular suction. The suctioned feces and sewage are transported to a specialized treatment center for harmless treatment, including biological degradation, chemical treatment, or physical treatment methods, and can be further converted into organic fertilizers or used for other resource recycling purposes.
