Tiexi District Mobile Toilet Construction

For the construction of mobile toilets in Tiexi District, reference can be made to the construction plan for waterless toilets, with the following key points:

I. Core Project Objectives and Equipment Selection The construction of mobile toilets in Tiexi District aims to address the issues of insufficient sanitation facilities in public places, water resource wastage, and winter pipe freezing. The project adopts waterless toilet technology, suitable for a temperate semi-humid continental climate (with an extreme winter low temperature of -22°C). The core equipment includes a feces-urine separation and treatment system: urine is treated with chemicals and converted into a light blue flushing solution, while feces are crushed and stirred to form a paper-pulp-like fluid, all without the need for an external water source. The system is equipped with a solar-assisted heating module (with an average annual sunshine duration of 2500 hours) to ensure that the equipment operates at a temperature no lower than 5°C in winter. It is planned to install 15 toilets in 10 areas, including Labor Park and Xinghua Street Business District, with each toilet covering an area of 8-12 square meters, accommodating an average of 300 people per day, and expected to save 16,000 tons of water and reduce emissions by 80 tons annually.

II. Key Pre-construction Preparation Steps

1. Drawing Refinement and Material Inspection: Adjust the dimensions of the equipment foundation according to the distribution of underground pipelines to ensure compatibility with the municipal pipeline network. Inspect specialized chemicals (pH regulators, deodorizers), polyurethane foam boards (with a thickness of no less than 50mm), and intelligent control systems (PLC controllers, temperature sensors), with a focus on verifying the startup performance of freeze-proof components at -30°C.
2. Site Preparation and Temporary Facilities: Excavate a 1.2m-deep foundation pit, backfill and compact it with graded sand and gravel (with a compaction coefficient of no less than 0.93). Construct a constant-temperature material warehouse (5-25°C) and a three-level power distribution system (with a grounding resistance of no more than 4Ω).
3. Project Schedule Planning: The foundation construction will take 15 days (including foundation pit excavation, concrete pouring, and embedded part installation), equipment installation will take 10 days (including main body hoisting, pipeline connection, and circuit laying), and commissioning and acceptance will take 5 days (including functional testing and freeze-proof linkage commissioning).

III. Core Construction Techniques

1. Foundation and Insulation: Use C30 frost-resistant concrete (with a frost resistance grade of F200) and embed DN50 drainage pipes (with a slope of 3‰). Wrap the exterior of the foundation with 20mm-thick XPS extruded polystyrene boards and cover the top with anti-slip steel plates (with a load capacity of no less than 2.5kN/m²).
2. Modular Installation: Secure the chassis (with a horizontal error of no more than 2mm/m), install 100mm-thick polyurethane sandwich color steel plate side walls and a roof integrated with solar collectors (at a 45° inclination). Equip the door with freeze-proof electric heating films (20W/m²) and fill the door frame with fire-resistant rock wool.
3. Urine Circulation System: Add a mixture of sodium hypochlorite and blue coloring agent at a ratio of 1:50 and start the circulation pump.

IV. Local Enterprise Resources Enterprises such as Tiexi District Jinfucheng Kiosk Distribution Center, Jingjie Ecological Sanitation Equipment (Shenyang) Co., Ltd., and Liaoning Lvyuan Environmental Protection Equipment Co., Ltd. provide design, production, leasing, and installation services for mobile toilets. Their products use environmentally friendly materials (such as HDPE high-density polyethylene) and offer advantages such as water and energy conservation and rapid installation.