Where Does the Waste from Mobile Toilets Go?
The disposal of waste from mobile toilets varies depending on their type, as detailed below:
Water-flush and Non-water-flush Suction Mobile Toilets
Water-flush mobile toilets use water from a tank to flush waste through pipes into a sewage tank located at the bottom. Non-water-flush mobile toilets, lacking a flushing mechanism, directly collect waste from users in a sewage tank positioned beneath the toilet. Due to the relatively small capacity of these sewage tanks, regular and timely suction is required to prevent overflow, which could disrupt normal toilet use. The suctioned waste is typically transported to specialized sewage treatment plants for further processing and purification to meet environmental discharge standards.
Recirculating Water-flush Mobile Toilets
Recirculating water-flush mobile toilets are equipped with intermittent aerobic and anaerobic treatment devices for fecal sewage, along with the addition of biological strains. They utilize biofilm technology to accelerate the fermentation and decomposition of fecal sewage, which is then recirculated through a filtration system for toilet flushing. This approach not only conserves water but also reduces sewage discharge, making it more environmentally friendly.
Dry-pack Mobile Toilets
Dry-pack mobile toilets collect waste in biodegradable plastic bags placed beneath the fixtures. After use, these bags containing waste are collected and transported to a treatment plant for disposal. This method eliminates the need for sewage tanks, reducing the complexity of sewage treatment and facilitating the transportation and handling of waste.
Foam-sealed Mobile Toilets
Foam-sealed mobile toilets use foam generated from a foaming agent mixture instead of water for flushing. The foam covers the inside of the toilet bowl, forming a seal to prevent odor emission. Waste is collected in a specific location, and the system meets its foaming water needs solely by collecting hand-washing water. This method also conserves water and reduces sewage production.
Microbial Mobile Toilets
In microbial mobile toilets, waste enters a solid-liquid separation device through an automatically opening toilet bowl. Urine is filtered and enters a comprehensive urine treatment system, where it undergoes processes such as aeration, evaporation, and decolorization to be converted into reclaimed water for flushing the urinal. Feces are separated and enter a fermentation tank, where they are decomposed by microbial strains. This approach enables the resourceful utilization of waste and reduces environmental pollution.
