Where Does the Feces from Mobile Toilets Go?
The destination of feces from mobile toilets varies depending on the type of toilet and the treatment method, including natural treatment, septic tank treatment, centralized collection by fecal suction trucks, chemical treatment, anaerobic digestion, compression and storage, multi-functional sewage outlets with manual cleaning, mechanical treatment, and flush and non-flush suction treatment methods.
Natural treatment: Some eco-friendly mobile public toilets are equipped with fecal tanks that utilize bacterial decomposition or parasitic earthworms for biological sedimentation, breaking down organic matter into harmless substances. This method is suitable for settings with low environmental impact requirements, such as parks and scenic spots.
Septic tank treatment: Through sedimentation and anaerobic fermentation techniques, suspended solids and colloidal substances in sewage are removed, and the purified water can be recycled or discharged into the environment. The treated feces can be used as fertilizer and applied to farmland or greenbelts through seepage pits.
Centralized collection by fecal suction trucks: In remote areas or temporary event venues, feces from mobile toilets are regularly collected by fecal suction trucks and transported to specialized fecal treatment plants for harmless treatment. This method ensures timely cleaning and effective treatment of feces, preventing environmental pollution.
Chemical treatment: Chemical agents are added to control odors and promote the decomposition of excreta. The treated excreta is further processed through specialized equipment or discharged into the sewage system to ensure compliance with environmental standards.
Anaerobic digestion: Microorganisms are used to decompose excreta, producing biogas (usable for energy) and fertilizer (usable for agriculture or horticulture). This method is suitable for scenarios requiring prolonged absence from treatment facilities, such as construction sites in the wild or campsites.
Compression and storage: Compression is used to reduce the volume of excreta and delay treatment needs. This method is suitable for camping or construction sites in the wild, effectively reducing cleaning frequency and transportation costs.
Multi-functional sewage outlets with manual cleaning: Mobile toilets equipped with fecal storage tanks or pre-buried septic tanks require regular manual cleaning and centralized treatment of feces. Although relatively traditional, this method remains practical in certain specific settings.
Mechanical treatment: Specialized equipment is used for solid-liquid separation, decomposition, and disinfection, reducing environmental impact and ensuring hygiene and safety. This method is suitable for settings with high hygiene requirements, such as hospitals and schools.
Flush and non-flush suction treatment: Flush mobile toilets may require a higher frequency of suction to maintain cleanliness; while circulating flush types accelerate fermentation and decomposition through anaerobic treatment devices and biological strains, reducing suction frequency and conserving water resources.
