How to Handle the Feces in Mobile Toilets
The feces treatment methods for mobile toilets mainly include six types: regular suction and centralized treatment, water-flush and non-water-flush suction types, circulating water-flush type, dry-packing type, foam-blocking type, and microbial type.
Regular suction and centralized treatment is the basic method for feces treatment in mobile toilets. Mobile toilets are equipped with a sewage tank at the bottom to collect feces and sewage. When the number of users reaches a certain scale or the sewage tank approaches its capacity limit, professional personnel need to use suction equipment to extract the feces to prevent overflow. The suctioned feces are then transported to a specialized treatment center for harmless treatment through biological degradation, chemical treatment, or physical treatment methods to ensure compliance with environmental protection standards.
Water-flush and non-water-flush suction types are two common types of mobile toilets. Water-flush mobile toilets provide flushing water from a top water tank, and the bottom sewage tank collects the excreta; non-water-flush types directly receive the excreta in the sewage tank without flushing. Both types require relatively frequent suction maintenance to prevent the sewage tank from overflowing and ensure the normal use of the toilet.
Circulating water-flush type mobile toilets are equipped with intermittent aerobic and anaerobic treatment devices and add biological bacteria to accelerate the fermentation and decomposition of feces. The treated sewage is purified through a filtration device and can be recycled for toilet flushing, significantly reducing the number of suction operations and saving water resources. This method is suitable for scenarios with limited water conditions or long-term use requirements.
Dry-packing type mobile toilets use biodegradable plastic bags to receive excreta, and a new bag is automatically replaced after each use. After use, they are collected and transported to a treatment plant for disposal. This method requires no water flushing at all, is easy to operate, and the plastic bags are biodegradable, having a relatively small impact on the environment.
Foam-blocking type mobile toilets use foam generated by a foaming liquid mixture to cover the inside of the toilet bowl, replacing the flushing function. The water used for hand washing is collected to meet the water demand for foam generation, further saving water resources. Foam blocking can effectively isolate odors and improve the user experience.
Microbial type mobile toilets treat excreta through a solid-liquid separation device. The feces enter a fermentation tank and are mixed with biological bacteria to decompose into carbon dioxide and water, while the urine is treated and then recycled to flush the urinal. This method achieves the resource utilization of feces and is environmentally friendly and efficient in the treatment process.
Precautions: During the treatment process, regular maintenance of toilet hygiene is required, and the sewage tank and toilet bowl should be inspected to ensure the normal operation of the equipment. The suction and treatment links should be operated by professional personnel to ensure safety and efficiency.
