Construction of Mobile Toilets in Chongqing Scenic Areas

The construction of mobile toilets in Chongqing scenic areas must adhere to strict standards and scientific procedures, covering multiple aspects such as site selection, structure, treatment systems, and full-cycle services.

Construction Background and Standards

As a core urban area, Shapingba District in Chongqing promotes the upgrading of public sanitation facilities with the concept of "small toilets, big livelihoods." Newly built toilets must meet the standards of urban public toilets of Class II or above, with a main structure resistant to wind speeds of up to 12 and earthquakes of magnitude 7, and a service life of no less than 10 years. Adaptive designs for special populations are mandatory, including barrier-free access and handrails; the ratio of toilet stalls strictly follows the principle of "more for women than men" to alleviate queuing issues for women.

Site Selection Planning and Site Preparation

Site selection requires triple verification through heatmap analysis of pedestrian flow, geological assessment, and environmental simulation to ensure scientific and practical outcomes. Site preparation adopts a graded construction method:

• Hardened ground must be set with a drainage slope of 2%-3% and equipped with drainage ditches and standpipes connected to the municipal sewer network;
• Soft soil foundations require reinforcement with crushed stone or concrete replacement to prevent settlement;
• Ecologically sensitive areas must avoid vegetation roots to minimize environmental disruption.

Main Structure and Material Technology

• Steel Structure Framework: Utilizes modular construction, with welding nodes requiring full penetration welding and flaw detection. Steel components are derusted and then coated with epoxy zinc-rich primer and polyurethane topcoat to form a long-lasting anti-corrosion system.
• Wall Construction: Adopts a "sandwich" composite structure (metal panel + insulation layer + decorative panel), with panel seams sealed with silicone sealant and butyl tape for double protection against leakage and airtightness.

Excreta Treatment System Selection

Different solutions are matched according to the conditions of the scenic area:

• Direct Discharge Type: Suitable for areas close to the municipal sewer network, such as visitor centers;
• Vacuum Collection Type: Uses negative pressure suction for water conservation, commonly used in high-end scenic areas or long-distance transportation vehicles;
• Microbial Degradation Type: Utilizes bacterial strains to decompose organic matter, requiring no external water source or sewer lines, suitable for mountainous or ecologically protected areas, such as Jinfo Mountain and Wulong Karst scenic areas.

Full-Cycle Service Process

Local enterprises in Chongqing provide one-stop services including site selection consultation, transportation and installation, commissioning and maintenance, and waste removal:

• During installation, the base must be fixed, water and electricity (if available) connected, and the flushing and sewage systems commissioned;
• Daily maintenance includes adding disinfectants, replenishing cleaning supplies, and regularly pumping out septic tanks;
• Some companies monitor toilet stall occupancy and waste storage capacity through IoT to achieve dynamic scheduling of waste removal vehicles, ensuring continuous availability.

Special Product Types

• Fiberglass Mobile Toilets: Lightweight, high-strength, leak-proof, and corrosion-resistant, they can be quickly deployed at observation decks, parking lots, and other nodes, supporting increased allocation during peak seasons and reduced allocation during off-peak seasons;
• Antique-Style Toilets: Feature traditional elements such as blue bricks and carved window lattices on the exterior, with modern sanitation facilities inside, balancing heritage preservation with functional needs.