Gray water treatment in car washes
Gray water treatment in car washes has many advantages, which prompts us to spread this culture at all levels. Treating this water will contribute to reducing part of the required need for freshwater, which is estimated at 30% to 50% of the individual’s needs, and the consequent savings in the cost of water bills and the reduction of water quantities will contribute to the rationalization message and maintain a clean environment.
Gray water treatment plants
Gray water is the water that comes out of sinks, bathtubs, washing machines, and floor basins. This type of water takes its name from the gray color it turns into after domestic or industrial use in washing, and this water is characterized by the fact that it does not contain organic materials.
Where is gray water used?
- Car wash stations
- Buildings attached to green spaces such as hotels and clubs.
- Domestic gray water treatment for showers and tubs
- Industrial gray water for washing plants and water recycling
Features of gray water treatment in general
Gray water treatment plants are stations designed to recycle and reuse water in the same place or other places such as car washes, irrigation, agriculture, and landscaping, and the features of their use include:
- This water constitutes approximately 55-74% of the water used in buildings.
- It contains a low contamination percentage of organic materials and nitrogen (nitrates, nitrites), as well as germs and microbes that are difficult to deal with during the purification stages.
- Low treatment costs compared to toilet water (black water).
- Human acceptance of reusing that water.
- Recycling and reusing them is harmless to the environment and health if the specified conditions and specifications are applied.
Features of gray water treatment in car washes
- Less water consumption of up to 40 liters of fresh water per wash.
- Wastewater and treated water are characterized by the control of chemical, physical and biological parameters.
- The quality of the washing result in terms of aesthetic quality due to the purification of the water and the smell.
- Protection from corrosion and scales, as the water is free of chemical hazards.
Considerations to be taken when building a gray water treatment plant
- The suitability of the plant technology for the quality of the water to be reused.
- The design capacity of the station is commensurate with the actual need for its use.
- Achieving the station’s return to the required efficiency.
- Achieving the efficiency of the station required specifications.
- The suitability of the station for the site and the number of users.
- Low cost, ease of operation, and maintenance.
Gray water treatment requirements
Commitment to the implementation of two water recycling networks when developing specifications and plans for the construction of new facilities:
The first is for the disposal of gray water, which is collected in a ground tank for treatment and then recycled in parcel and agricultural bins, as it requires the construction of a special tank for collecting treated water and a network for property and agricultural bins.
The second is for black water drainage.