Heihe Mobile Toilet Septic Tank
The design of the septic tank for mobile toilets in Heihe focuses on the collection and treatment systems, achieving efficient and environmentally friendly treatment through technologies such as sealed sewage storage and physical-chemical separation.
Collection System: Innovative Design of Sealed Sewage Storage Units
The septic tank collection system for mobile toilets in Heihe employs sealed sewage storage units, breaking through the limitations of traditional septic tanks that rely on passive storage. This unit uses gravity and air pressure control to achieve directional collection of waste: when waste enters the storage unit, gravity causes it to naturally settle, while the air pressure regulation device uses negative pressure principles to guide waste flow to specific areas, preventing overflow or backflow. This design not only improves collection efficiency but also effectively blocks odor diffusion through its sealed structure, reducing mosquito and fly breeding, and meeting public health requirements. Additionally, the modular design of the sealed sewage storage units facilitates easy disassembly and transportation, adapting to the flexible deployment scenarios of mobile toilets.
Treatment System: Rapid Purification Path through Physical-Chemical Separation
The treatment system abandons the complex process of traditional biochemical reactions that rely on microbial communities, instead adopting physical separation and chemical stabilization principles to achieve rapid purification of waste. Its core structure is a solid-liquid separation layer: when waste enters the treatment system, large solid particles (such as feces and tissues) are intercepted and settled by the separation layer, forming solid sludge; the liquid portion then passes through the separation layer to the next stage. In liquid treatment, the system adds disinfectants (such as chlorine-based disinfectants or peroxide-based disinfectants) to kill pathogens through oxidation, while adjusting the liquid pH to neutral, transforming it into water that meets discharge standards. This process does not require microbial cultivation, shortening the treatment cycle to less than one-third of traditional methods and avoiding treatment interruptions caused by microbial death or reduced activity.
Technological Advantages: Balancing Environmental Protection and Practicality
The design of the septic tank for mobile toilets in Heihe reflects the dual goals of environmental protection and practicality. The physical-chemical treatment method reduces the use of chemical agents (only required during the disinfection stage), and the solid sludge can be converted into organic fertilizer through centralized treatment, achieving resource recycling; the liquid discharge meets the neutral and harmless requirements of the Administrative Measures for the Permission of Urban Sewage Discharge into Drainage Networks, allowing direct connection to municipal sewage networks or use for green irrigation. Furthermore, the overall energy consumption of the system is low, requiring no electrical drive (only the air pressure regulation device needs a small amount of energy), making it suitable for remote areas without municipal power supply or temporary event scenarios.
