Mobile Biochemical Toilet

A mobile biochemical toilet is a type of public toilet that achieves harmless treatment of excrement through microbial degradation. Its core technology involves utilizing the metabolic activities of specific microbial communities (such as Bacillus and yeast) to decompose the organic matter in feces into carbon dioxide, water, and a small amount of inorganic salts.

Mechanism of Action and Advantages

Unlike traditional flush toilets that rely on large amounts of clean water for flushing and sewer networks for waste disposal, the decomposition process in a mobile biochemical toilet takes place within a closed biochemical reaction chamber. The reaction temperature is typically maintained at 15-40℃, eliminating the need for additional heating devices. The volume of the decomposed residue accounts for only 5%-10% of the initial excrement, presenting as a dry, odorless powder that can be directly used as a base material for organic fertilizers in landscaping. Compared to chemical-agent toilets, it avoids secondary pollution of soil and groundwater caused by chemicals and eliminates the need for regular pumping and transportation of waste liquid.

Scenario-Based Configurations

Mobile biochemical toilets offer differentiated configurations tailored to different scenarios:

• Tourist attractions or commercial districts: They adopt an integrated design that combines microbial reaction modules, flushing circulation systems, and solar power supply units within a 2-3 square meter container. The reaction modules use biological carriers such as coconut shell charcoal fibers or polyurethane sponges, with a specific surface area of 1000-2000 square meters per cubic meter, providing ample space for microbial attachment. The flushing system uses treated recycled water, requiring only 0.3-0.5 liters per flush, achieving a water-saving rate of over 90%.
• Construction sites or temporary disaster relief points: They emphasize rapid deployment and anti-interference capabilities. Some units are equipped with intelligent monitoring modules that continuously monitor the temperature, humidity, pH value, and microbial activity within the reaction chamber. When the metabolic efficiency of the microbial community declines, the system automatically initiates heating or microbial replenishment procedures to ensure continuous and stable degradation.

Degradation Efficiency and Countermeasures

The microbial degradation rate is influenced by the type of microbial community, environmental conditions, and the composition of the excrement. Taking the subtropical monsoon climate in Yichang as an example, the degradation time for a single batch of feces is approximately 4-8 hours in summer and may extend to 12-24 hours in winter. The equipment is equipped with a dormancy and resuscitation mechanism: when the temperature drops below 10℃, the microbial community enters a dormant state with a survival period of 30-60 days; when the temperature rises again, an activator restores the microbial activity within 2-4 hours. For excrement with high fat or cellulose content, the equipment is equipped with an automatic emulsifier dosing module that decomposes fats into small-molecule fatty acids, shortening the treatment cycle.