Flush toilet
Also known as: flush toilets · water closet · WC
- 1The system uses water force to transport waste to a treatment facility.
- 2A water seal in the trapway prevents sewer gases from entering the room.
- 3Designs include both sitting and squatting variations.
- 4Porcelain is the most common material used for residential units.
- 5The device is a critical component of modern sanitation infrastructure.
A flush toilet is a toilet that disposes of human waste by collecting it in a bowl and then using the force of water to channel it through a drainpipe to another location for treatment, either nearby or at a communal facility. Flush toilets can be designed for sitting or squatting. Most modern sewage treatment systems are also designed to process specially designed toilet paper, and there is increasing interest for…
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technological innovation that exacerbated the pollution
The widespread adoption of the water closet in Victorian London significantly increased the volume of waste flushed directly into the Thames, overwhelming the existing cesspool system.
A flush toilet is a sanitation device that utilizes the force of water to transport human waste from a bowl into a drainage system for subsequent treatment. This mechanism is a cornerstone of modern public health, as it effectively separates human waste from living environments, significantly reducing the transmission of waterborne diseases. The design typically includes a trapway that maintains a water seal, preventing sewer gases from entering the building.
Flush toilets with cisterns Top: A sit toilet Bottom: A squat toiletWikimedia Commons: File:Toilet_photo.jpgA flush toilet bowl during flushing actionWikimedia Commons: File:Flushing_toilet.jpgVacuum toilet in a train in SwitzerlandWikimedia Commons: File:Vacuum_toilet_in_a_train.jpgThe ballcock or float valve is often used to regulate the filling of a tank or cistern. When the fluid level drops, the float descends, levering the valve opening and allowing more fluid to enter. Once the float reaches the 'full' position, the arm presses the valve shut again.Wikimedia CommonsOne type of concentric float valve. The concentric float valve opens when the fluid level is low, allowing more fluid to enter [Figure 1]. When the fluid level returns to the full level, the valve is shut [Figure 2].Wikimedia CommonsA simplified diagram of a siphonic WC cistern. The siphon is formed of a vertical pipe (1) that links the flush pipe (2) to a domed chamber (3). A perforated disc (4) covered by a flexible plate or flap (5) is joined by the siphon rod (6) to the flush lever (7).Wikimedia CommonsAn elevated cistern produces a high-pressure flush using hydrostatic pressure.Wikimedia CommonsSloan pressure vesselWikimedia Commons These toilets are manufactured in various configurations, including both sitting and squatting models, to accommodate different cultural preferences and infrastructure requirements. While porcelain is the standard material for residential use due to its durability and ease of cleaning, public facilities often utilize more robust materials like stainless steel. Modern systems are engineered to handle specific waste products, such as toilet paper, though they require careful management to prevent blockages and ensure the efficiency of sewage treatment plants.