Production of Environmental Protection Mobile Toilets in Gansu
The production of environmental protection mobile toilets in Gansu covers multiple aspects, including material selection, modular forming, steel structure frame welding, internal integrated system assembly, environmental protection application design, maintenance and end-of-life disposal, as well as technological innovation.
In terms of material selection, color-coated steel sheets are chosen as the primary structural material. Their outer layers, coated with aluminum-zinc, offer resistance to ultraviolet rays and salt-alkali, making them suitable for the local environment characterized by large temperature differences between day and night and alkaline soil. The interior is filled with polyurethane foam to form a sandwich structure, providing thermal insulation.
During the modular forming stage, color-coated steel sheets are processed into three basic modules—wall panels, roof panels, and floor panels—using CNC pressing equipment. The joints between these modules feature a labyrinth-style slot design, combined with ethylene propylene diene monomer rubber seals, ensuring that the airtightness of the assembled structure meets the third-level standard for building envelopes.
For steel structure frame welding, carbon dioxide arc welding is employed, enhancing the tensile strength of the welds to over 85% of the base material. The internal integrated system assembly includes water-saving flushing devices that consume less than 1.8 liters of water per flush, and a ventilation system with a bidirectional fresh air design that achieves an air exchange rate of over 15 times per hour.
In environmental protection application design, composite microbial agents are added to the septic tanks, enabling a 70% decomposition rate of organic waste within 72 hours. Monocrystalline silicon photovoltaic panel modules can be installed to meet the all-weather energy demands of lighting and ventilation systems. The structure is connected to a concrete foundation using anchor bolts, with wind load capacity designed according to the 50-year return period wind pressure standard of 0.45 kN/㎡ in Gansu. The exterior wall surface is treated with a sand-textured coating process to extend its weather resistance lifespan.
Regarding maintenance and end-of-life disposal, based on the principle of modular replacement, damaged components can be replaced within 30 minutes, with an overall repairability rate of the structure reaching 92%. The recycling rate of color-coated steel sheets can reach 75%, and polyurethane foam can be converted into recycled plastic raw materials through pyrolysis treatment.
Technological innovation is reflected in the modular connection method of the frame system, with some manufacturers introducing Building Information Modeling (BIM) technology to optimize component cross-sectional dimensions. The biological treatment system utilizes specific microbial communities to decompose organic waste. The flushing water undergoes multiple purification mechanisms to achieve water resource recycling. Spectral analysis is required for materials upon arrival to determine the proportion of metal components, and finished product inspections include airtightness tests and water pressure tests.
