How to Handle the Bottom of a Mobile Toilet

The treatment of the bottom of a mobile toilet mainly involves two aspects: ground fixation and sewage disposal. The specific methods are as follows:

Ground Fixation Methods

1. Expansion Bolt Fixation Method
   Suitable for cement and hardened floors. During operation, use a level to position the four corners of the toilet bottom and mark the drilling positions. After drilling holes with an impact drill, insert expansion bolts and tighten them. Finally, connect the toilet chassis to the bolts. To enhance stability, it is recommended to use 2-4 bolts on each side. This method is easy to install and suitable for short-term or medium-term use scenarios.

2. Concrete Pouring Fixation
   For long-term fixation or heavy-duty mobile toilets, excavate a foundation pit according to the toilet size, lay a crushed stone bedding layer and compact it, set up formwork, pour concrete, and insert a steel reinforcement framework. After the concrete has fully solidified, connect the toilet chassis to the foundation. This method offers extremely high stability but requires prior application for a construction permit and has a long construction period, making it suitable for permanent or semi-permanent locations.

3. Counterweight Block Fixation Method
   Suitable for temporary scenarios or non-hardened floors (such as grasslands and sandy areas). Place prefabricated concrete blocks or sandbags around the bottom of the toilet, with each counterweight weighing no less than 50 kg. The total counterweight should be more than 1.5 times the self-weight of the toilet, and wrap the counterweight blocks with waterproof tarpaulin to prevent moisture. This method does not require damaging the floor but requires regular inspection to ensure the counterweight blocks do not shift.

Sewage Disposal Methods

1. Water-Flush and Waterless-Flush Suction Types
   Water-flush toilets have a water tank on top and a sewage tank at the bottom, flushing excreta with water flow; waterless-flush types directly receive excreta in the bottom sewage tank. Both methods require regular suction of the sewage tank to prevent overflow and are suitable for locations with access to sewage disposal vehicles.

2. Recirculating Water-Flush Type
   This method adopts an intermittent aerobic and anaerobic treatment system combined with biofilm technology to purify sewage. The treated reclaimed water is recycled for flushing the toilet. This approach significantly reduces water consumption and suction frequency but has higher equipment costs, making it suitable for areas with water scarcity or high environmental protection requirements.

3. Dry Packing and Foam Sealing Types
   The dry packing type uses biodegradable plastic bags to receive excreta, automatically replacing them with new bags after use; the foam sealing type generates foam with a foaming agent to cover the inside of the toilet bowl, blocking odors and reducing flushing water volume. Both methods do not require a sewage tank but require regular replacement of plastic bags or replenishment of the foaming agent, making them suitable for remote areas without sewage disposal conditions.

4. Microbial Type
   This method uses a solid-liquid separation device to treat feces and urine separately: feces are decomposed by microorganisms into harmless substances, and urine is purified into reclaimed water for reuse. This approach forms an ecological recycling system with almost no external waste discharge but requires high equipment maintenance, making it suitable for eco-tourism areas or high-end temporary event venues.

In addition, the bottom frame of a mobile toilet is usually welded with channel steel or I-beams, and the columns are made of square steel, forming a frame structure to meet lifting requirements and ensure stability during transportation and installation.