How Does a Mobile Environmental Toilet Defecate?
Mobile environmental toilets have diverse defecation methods, with common treatment approaches including water-flush and waterless suction types, circulating water-flush types, dry packing types, foam sealing types, microbial degradation types, and vacuum suction types. Discharge often relies on vacuum sewage suction pumps, fecal suction trucks, or traditional ditches.
In the water-flush and waterless suction types, the water-flush type uses a water tank to flush feces into a bottom sewage tank, requiring regular suction by a vacuum sewage suction pump or a sealed fecal suction truck. The waterless suction type directly receives excreta in a sewage tank without flushing, but also requires frequent suction. Both methods are commonly used in fixed or semi-fixed mobile toilets.
The circulating water-flush type employs biofilm technology to treat fecal sewage through aerobic and anaerobic processes, adding microbial strains to accelerate decomposition. The treated water is recycled for toilet flushing, achieving efficient water utilization and suitable for scenarios with water scarcity or high environmental protection requirements.
The dry packing type uses biodegradable plastic bags to receive excreta, automatically replacing with a new bag after each use and transporting them collectively to a treatment plant. This method requires no water flushing, isolates feces from the outside environment, reduces odors and pollution, and is suitable for arid regions or temporary event venues.
The foam sealing type generates foam from a foaming agent to cover the toilet bowl, blocking odors and lubricating for flushing, with extremely low water consumption and effective inhibition of bacterial transmission, suitable for occasions with high hygiene and water-saving requirements.
The microbial degradation type separates solid and liquid waste, with solid feces mixed with sawdust and microbial strains for fermentation, decomposing into carbon dioxide and water. Urine is treated through aeration and evaporation into reclaimed water for reuse, achieving harmless treatment and resource utilization of feces.
The vacuum suction type (for vehicle-mounted mobile toilets) uses a vacuum pump to suck excreta into a collection tank, suitable for vehicle-mounted mobile toilets for easy transportation and cleaning.
In terms of discharge, mobile public toilets typically use vacuum sewage suction pumps or sealed fecal suction trucks and other equipment. A vacuum sewage suction pump or other types of sewage pumps installed below the toilet body suck excreta through pipes for treatment. Sealed fecal suction trucks can also be used to collect feces and transport them to a sewage treatment plant for processing. In remote or poorly conditioned areas, traditional drainage ditches may be used to discharge fecal water.
