Waste in Mobile Toilets

There are various ways to handle waste in mobile toilets, with different treatment technologies depending on the type of toilet. The main categories are simple mobile restrooms, mobile public toilets, and mobile restrooms in scenic areas.

Treatment methods for simple mobile restrooms include: Chemical treatment: Chemical agents are added to decompose organic matter in excreta, suppress odor generation, and accelerate the decomposition process. The treated waste is discharged through specialized equipment or flows into the sewage system for further treatment. Anaerobic digestion: Microorganisms are used to decompose excreta in an oxygen-free environment, producing biogas (usable for energy) and fertilizer (usable for agriculture or horticulture), while reducing waste volume and delaying treatment needs. Compression and storage: Mechanical compression is used to reduce the volume of excreta, suitable for scenarios such as camping or remote construction sites where access to treatment facilities is unavailable for long periods. Storage containers need to be cleaned regularly. Multi-functional sewage outlets: Equipped with fecal storage tanks or pre-installed septic tanks, manual regular cleaning and centralized treatment of feces are required to maintain hygiene. Mechanical treatment: Equipment for solid-liquid separation, decomposition, and disinfection is used to reduce the environmental impact of waste and ensure hygiene and safety. Flush and non-flush suction types: Flush types use a flushing device to discharge waste into a bottom sewage tank; non-flush types directly receive excreta in a sewage tank, which requires regular suction and cleaning. The circulating flush type reduces suction frequency through biological treatment.

Treatment methods for mobile public toilets include: Conventional flush type: Connected to water supply and drainage pipes, it discharges sewage to a septic tank or municipal sewer network through manual or automatic sensing, suitable for environments with water and relatively low construction costs. Vacuum sewage system: Using negative pressure principles, a vacuum pump sucks sewage and waste into a collection container. When the sewage reaches a preset level, it automatically activates, offering high efficiency and low water consumption while preventing leaks and odor diffusion. Water storage sewage system: Waste is flushed into a storage tank through water flushing. When the sewage reaches a preset level, the flushing device automatically activates. When the storage tank is full, it needs to be cleaned and replaced, suitable for locations with sufficient water supply and easy cleaning. Biodegradation technology: Organic matter in sewage is converted into harmless substances before discharge, being environmentally friendly and reducing environmental pollution.

Treatment methods for mobile restrooms in scenic areas include: Flush and non-flush suction types: Flush types have a flushing device with a sewage tank at the bottom of the toilet; non-flush types have no flushing device and receive excreta in a sewage tank, requiring timely suction and cleaning. Circulating flush type: Equipped with a biological treatment device and a filtration system, it accelerates fermentation and decomposition through biofilm technology, recycling treated fecal sewage for toilet flushing, saving water resources, and reducing suction frequency. Dry packing type: Degradable plastic bags are used to receive excreta, automatically replaced with a new bag after each use. After use, they are collected and transported to a treatment plant for disposal, saving water resources and facilitating waste collection. Foam sealing type: Foam generated by a foaming liquid mixture covers the inside of the toilet bowl, replacing the flushing function, with no odor and requiring only a small amount of hand-washing water for foaming. Microbial type: Excreta passes through a solid-liquid separation device. Urine is filtered into the treatment system, while feces are decomposed into carbon dioxide and water by microbial bacteria, with a degradation rate of ≥99%.