Zhenjiang Water Circulation Mobile Toilet

The Zhenjiang water circulation mobile toilet achieves water resource recycling through independent water tanks and greywater filtration technology, combined with vacuum suction flushing and coordinated waste treatment, forming an efficient water-saving mobile toilet solution.

Composition and Operational Mechanism of the Water Circulation System

The water circulation system operates independently of municipal water supply, with its core components being the independent water tank and the greywater filtration module. The independent water tank comes in two forms: built-in or external, and is regularly replenished with water by service vehicles to ensure continuous system operation. Greywater filtration technology is a key innovation: handwashing wastewater is initially filtered to remove suspended solids and impurities through a multi-stage filtration membrane (such as PP cotton and activated carbon), then enters a UV or chemical disinfection module to kill pathogens, and is finally reused for toilet flushing, forming a closed-loop cycle of 'water use - wastewater - purification - reuse'. Some models are also equipped with water quality monitoring sensors to continuously monitor indicators such as turbidity and residual chlorine in the reused water, ensuring water safety.

Flushing Methods and Water-Saving Design Optimization

Flushing technology is divided into two categories: direct flush and vacuum suction flush. Direct flush relies on gravity-driven water flow, with a simple structure but relatively high water consumption (about 6-8L per flush); vacuum suction flush generates negative pressure through airtight pipes, requiring only 0.6-0.8L per flush to complete the process, achieving a water-saving efficiency of over 90%. When combined with the water circulation system, the vacuum suction technology can further reduce the water consumption per flush to 0.3-0.5L, significantly reducing reliance on external water supply. For example, a certain model of vacuum suction water circulation toilet can reduce freshwater consumption by about 2 tons per day (based on 200 uses per day).

Waste Treatment and Coordinated Water Circulation Technology

The water circulation system operates in conjunction with the waste treatment module:

• Storage and transportation treatment: Solid waste is independently collected in sealed fecal storage tanks and regularly transported by suction trucks; the water circulation system only treats handwashing wastewater, avoiding contamination of the filtration module by waste and extending equipment lifespan.
• Biological/physical-chemical treatment: Some models incorporate liquid waste (such as urine) into the water circulation filtration process, decomposing organic matter through membrane bioreactors (MBR) or electrochemical oxidation technology, and treating solid portions with biodegradable bacterial agents to convert them into harmless residues, reducing the frequency of waste removal. For example, a model integrating biological treatment technology can extend the waste removal cycle from 3 days to 7 days.

Market Applications and Product Types

The rental market in the Zhenjiang area offers products such as 'environmentally friendly plastic water-flush storage-type mobile toilets' that clearly indicate water-flush functionality, with some models integrating water circulation technology. Rental prices range from 300 to 988 yuan per set per day, depending on brand (such as Hongliyu, TORO) and configuration differences. High-end models are equipped with intelligent monitoring systems and emergency backup water tanks, suitable for large-scale events or long-term use scenarios.