Jiaxing Mobile Toilet Construction Plan

The construction plan for mobile toilets in Jiaxing should be systematically planned from three aspects: demand assessment, equipment selection, and installation process to ensure functional adaptability and construction standardization.

I. Demand Assessment and Plan Formulation

1. Quantification of Spatiotemporal Parameters
   It is necessary to combine the usage scenarios of the site to clarify the expected peak pedestrian flow (such as daily average/peak hourly usage numbers), the total duration of the activity (short-term events or long-term fixed usage), and estimate the gender ratio of the crowd (affecting the allocation of toilet cubicles). At the same time, it is essential to measure the planar dimensions (length and width) and vertical space height available for setting up equipment at the site to ensure compatibility between equipment size and the site.
2. Functional Module Decomposition
   Core functional modules should be divided according to usage needs:

• Excreta Treatment Module: Choose treatment methods such as water flushing, waterless flushing, biodegradation, or vacuum suction;
• Privacy Protection Module: Equip with independent cubicles, door locks, and ventilation systems;
• Cleaning and Maintenance Module: Design easy-to-clean inner walls, automatic spraying devices, or disinfection equipment;
• Special Population Adaptation Module: Add barrier-free access, handrails, and child-specific facilities.

3. Environmental Interface Assessment
   On-site surveys of geological conditions (such as the need for reinforcement in soft soil foundations), the distribution of underground pipelines (to avoid damaging water supply/sewage pipelines), surface drainage slopes (to prevent water accumulation), and the feasibility of connecting to municipal power/water supplies are required. If there are no municipal connections at the site, plans for self-contained energy sources (such as solar power) or the capacity of water/excreta storage containers need to be made.

II. Equipment Type Selection

1. Water-Flush Mobile Toilets
   Suitable for long-term fixed locations covered by municipal water supply/sewage networks (such as parks and scenic spots), requiring regular cleaning of septic tanks and connection to fecal suction trucks.
2. Waterless Packing Toilets
   Using biodegradable film bags to encapsulate excreta, requiring no water source or sewage pipelines, suitable for water-scarce areas or temporary events (such as music festivals and construction sites).
3. Biodegradable Toilets
   Through microbial decomposition of excreta into harmless substances, with high environmental protection, suitable for ecologically sensitive areas or long-term usage scenarios (such as nature reserves).
4. Vacuum Suction Toilets
   Utilizing negative pressure to suction excreta, with extremely low water consumption (about 0.5L per use), suitable for places with water scarcity or strict water usage restrictions (such as desert scenic spots).

III. Installation Process

1. Site Preprocessing
   According to the weight (such as approximately 1-3 tons for a single toilet unit) and dimensions of the equipment, the installation ground should be leveled (with a slope ≤ 2%) and hardened. Soft soil foundations require pouring concrete foundations or laying steel plates for reinforcement.
2. Foundation Installation

• Fixing the toilet main body: Use expansion bolts or ground anchors to fix the toilet unit, ensuring an anti-wind rating of ≥ Grade 8;
• Water and electricity connections: Connect to municipal water/power supplies (or configure water storage tanks/generators), lay sewage pipelines (for water-flush types) or install fecal storage containers (for waterless types);
• Sewage system laying: Septic tanks should be kept away from drinking water sources, with a slope ≥ 1% to ensure gravity drainage.

3. Environmental Protection Treatment
   High-end equipment needs to be equipped with sewage treatment systems (such as membrane bioreactors) to ensure that the effluent water quality meets the standards of the "Urban Sewage Reuse Urban Miscellaneous Water Quality" to avoid environmental pollution.