Back to blog
Article

Internal Circulation Mobile Toilet

Admin September 24, 2026

The internal circulation mobile toilet is a type of mobile toilet with water-saving and environmentally friendly features, primarily achieving efficient water use and fecal treatment through an internal water circulation system.

Structural Composition

The core structure of an internal circulation mobile toilet includes the cabinet, toilet bowl, toilet bowl bottom trough, flushing trough, suction pump, water supply pump, aeration fan, regenerated water trough, and decomposition trough. Taking the product of Weihai Guangyang Environmental Protection Technology Co., Ltd. as an example, it adopts a one-time water injection circulation system equipped with a microbial decomposition device and solid filtration materials. The microbial decomposition device treats feces through anaerobic and aerobic reactions, while the solid filtration materials are responsible for separating, adsorbing, and purifying sewage to ensure the water quality meets colorless and odorless standards.

Working Principle

The working principle of an internal circulation mobile toilet is divided into two stages:

  1. Solid Decomposition and Separation: The aeration pump continuously aerates the bottom trough and decomposition trough, accelerating the decomposition and sedimentation of solid feces to achieve solid-liquid separation. The suction pump draws the waste from the bottom trough to the decomposition trough, and the aeration fan intermittently supplies air to enhance microbial decomposition efficiency.
  2. Water Circulation and Reuse: The decomposition trough is connected to the upper part of the regenerated water trough, and the water supply pump delivers the regenerated water to the flushing trough, forming a closed-loop circulation. The product from Weihai Guangyang achieves a fecal removal rate of over 98% through microbial decomposition, and the sewage, after treatment by solid filtration materials, maintains clean water quality for a long time without the need for an external water source.

Features and Advantages

  1. Water-saving and Efficient: By utilizing an internal water circulation system, it significantly reduces the amount of flushing water. The product from Weihai Guangyang even achieves infinite circulation after one-time water injection, making it suitable for scenarios with water scarcity or no water supply.
  2. Environmentally Friendly and Low-carbon: Microbial decomposition and solid filtration technologies avoid the use of chemical agents, reduce sewage discharge, and lower environmental pollution.
  3. Easy Maintenance: The simplified structural design reduces the frequency of waste cleaning, saving manpower and resources. Its strong temperature adaptability enables stable operation in extreme climates.
  4. Wide Application: Its characteristic of not requiring an external water source and drainage system makes it suitable for diverse scenarios such as tourist attractions, construction sites, and temporary events.