Mobile Toilet Storage

The storage design of mobile toilets primarily revolves around fecal wastewater storage tanks or fecal wastewater treatment devices, with variations in storage capacity, methods, and applicable scenarios among different types of mobile toilets.

Storage Capacity and User Frequency

Some mobile toilets employ a foot-operated water outlet design, with a fixed water output of 200 milliliters per use. The squat toilet has a built-in slope, allowing waste to be directly discharged into the storage tank. The storage capacity of such tanks can reach 350 liters, accommodating approximately 300 uses based on the amount of waste generated per use. This design maximizes the cleaning cycle of the storage tank by precisely controlling the water usage per flush, ensuring cleanliness while extending the interval between cleanings. It is suitable for scenarios with high foot traffic but limited cleaning frequency, such as temporary large-scale events and construction sites.

Sewage Treatment Methods and Storage Types

Mobile toilets can be categorized into four types based on sewage treatment methods, each with distinct storage design features:

1. Water-flush and Waterless Suction Mobile Toilets: Water-flush toilets use a water tank or external water source for flushing, with waste entering a storage tank that requires periodic suction for cleaning. Waterless suction toilets directly use negative pressure to draw waste into the storage tank, reducing water consumption. However, the storage tank must be equipped with a sealed structure to prevent odor leakage, making them suitable for water-scarce areas or scenarios with high hygiene requirements.
2. Recirculating Water-flush Mobile Toilets: These toilets utilize biological degradation or chemical treatment technologies to purify wastewater for reuse in flushing. The storage tank serves both as a wastewater collection and purification unit, requiring periodic replenishment of treatment agents or replacement of filters. This design significantly reduces water consumption and is suitable for long-term fixed installations, such as scenic spots and parks.
3. Dry Packaging Mobile Toilets: These toilets use biodegradable plastic bags or special containers to collect waste, eliminating the need for liquid media in the storage tank. Waste storage is achieved through mechanical packaging or manual replacement. This design produces no wastewater discharge, and the storage tank capacity can be customized according to needs, making it suitable for areas with strict environmental requirements or no sewer systems, such as remote mountainous regions and temporary construction sites.

Core Considerations in Storage Design

The storage design of mobile toilets must balance capacity, cleanliness, and maintenance costs: insufficient capacity requires frequent cleaning, increasing operational burdens; excessive capacity may occupy too much space or lead to waste accumulation. Additionally, the material of the storage tank must be corrosion-resistant and leak-proof, with an effective sealed structure to isolate odors, ensuring a positive user experience and environmental hygiene.