Beihai Mobile Toilet Installation

The installation of mobile toilets in Beihai should be systematically advanced from four aspects: project planning, construction preparation, main construction, and key points of environmental protection construction:

I. Project Planning and Standards The installation of mobile toilets in Beihai aims to enhance public service levels, with a focus on covering tourist attractions, parks, and other areas. The configuration of each toilet strictly adheres to standards: 3 male toilet stalls (including 1 urinal), 4 female toilet stalls, 1 accessible stall, and a management room, equipped with smart sensor washbasins, hand dryers, LED lighting, and other facilities. The environmental protection system employs rainwater collection and filtration, sewage biochemical treatment (MBR membrane reactor with a treatment capacity of 500L/d and a degradation rate of ≥95%), and solar power supply (monocrystalline silicon panels of 300W each, ensuring ≥3 days of power during cloudy and rainy days). It adheres to a first-class cleaning standard, requiring a material recycling rate of ≥90%, an average daily power consumption of ≤8 kWh, and a water-saving rate of ≥30% (compared to traditional toilets). Sewage discharge must comply with the Class I A standard of GB18918-2002.

II. Key Points of Construction Preparation

1. Site Conditions: The ground flatness error should be ≤5cm, with a bearing capacity of ≥15kPa. Avoid low-lying areas prone to water accumulation. The site should be close to areas with high pedestrian traffic and maintain a distance of ≥5m from surrounding buildings. Temporary power supply (220V/380V) or an average daily sunlight exposure of ≥4 hours (for solar systems) is required.
2. Survey Content: Measure the site dimensions, slope, and distribution of underground pipelines (avoiding gas and power pipelines). Evaluate the aesthetic harmony (e.g., adopting an antique style for tourist attractions). Develop a leveling plan, specifying the amount of earth excavation and backfill materials (prioritizing graded sand and gravel).
3. Materials and Equipment: The main structure uses hot-dip galvanized square steel (80×80×3mm) and aluminum-plastic composite panels, with a wind load resistance of ≥0.55kN/m² and a fire rating of Class B1. Water-saving equipment includes sensor faucets (6L/min) and vacuum toilets (single flush ≤1.5L). The smart system integrates a PLC controller and a 4G remote monitoring module, supporting toilet stall occupancy display and energy consumption statistics.

III. Main Structure Construction

1. Foundation Treatment: Use C25 concrete independent foundations (800×800×500mm, spaced 2.5m apart). For silty clay foundations, lay a 300mm thick graded sand and gravel cushion (compaction coefficient ≥0.93) and pre-embed Q235 steel plates (200×200×10mm).
2. Structure Installation: Color steel modules are connected with high-strength bolts and sealed with sealant, requiring no wet operations. The foundation is leveled using concrete prefabricated blocks or steel frame bases to adapt to terrain undulations.

IV. Key Points of Environmental Protection and Construction

1. Environmental Protection Attributes: The recyclability of color steel plates reduces the environmental impact throughout the lifecycle. Microbial degradation technology reduces sewage discharge, and the vacuum collection system achieves a water-saving rate of ≥60%.
2. Construction Key Points: Use a level gauge for horizontal calibration and fill joints with neutral silicone sealant. Cable and water pipe wall penetrations should use dedicated waterproof connectors and undergo pressure testing. The electrical system uses low-voltage DC power or solar power supply, with wiring routed through pipes and insulated from metal structures.

The project duration totals 30 days, including 7 days for site preparation, 10 days for main construction, 8 days for system installation, and 5 days for commissioning and acceptance. It requires the collaboration of a project manager, a technical leader, and 3 construction teams.