Yunnan Mobile Toilet Septic Tank
The septic tanks used in mobile toilets in Yunnan are mainly integrated three-chamber septic tanks, which are made of fiberglass composite materials and feature high strength, efficient treatment, and environmental protection applications. The following is an explanation from three aspects: structure, performance, and treatment effects:
1. Structural Design: Circumferential Dense Ripples Enhance Compressive Strength
The integrated three-chamber septic tank is made of fiberglass composite materials and features a circumferential dense ripple structural design, significantly enhancing its overall compressive and impact resistance. The standard model can withstand the pressure of a 15-ton truck, while the reinforced model can handle up to 40 tons, making it suitable for the complex terrain in Yunnan and the frequent relocation needs of mobile toilets. Its integrated molding process avoids the leakage risks associated with traditional septic tanks caused by splicing, providing better sealing and a service life of over 20 years.
2. Hierarchical Treatment: Three-Stage Anaerobic Chambers Achieve Efficient Purification
The septic tank is internally divided into three chambers: a primary anaerobic chamber, a secondary anaerobic chamber, and a clarification chamber. Feces first enter the primary anaerobic chamber, where organic matter is decomposed through anaerobic fermentation, reducing the concentration of suspended solids. It then flows into the secondary anaerobic chamber for further decomposition of residual organic matter and killing of some parasite eggs. Finally, it enters the clarification chamber, where after sedimentation, parasites and pathogenic microorganisms in the fecal liquid are largely removed, meeting harmless standards. This hierarchical treatment model improves the fecal liquid treatment efficiency by over 50% compared to traditional single-chamber septic tanks.
3. Environmental Protection Application: Treated Fecal Liquid Can Be Directly Used for Farmland Fertilization
The fecal liquid treated through the three stages meets the standards of the "Hygienic Requirements for Harmless Disposal of Feces" (GB 7959-2012), with a nutrient retention rate of nitrogen, phosphorus, and potassium exceeding 80%. It can be directly used for farmland irrigation or fertilization, achieving resource recycling. Some areas in Yunnan have applied it to the cultivation of economic crops such as tea gardens and orchards, reducing the use of chemical fertilizers and lowering the risk of fecal pollution to the environment. Additionally, this septic tank does not require an external power supply and has low operating costs, making it suitable for mobile toilets in remote areas and tourist attractions in Yunnan.
