The fully automatic car cleaning water treatment equipment is a system designed specifically for the recycling and reuse of car cleaning wastewater. By efficiently treating wastewater containing pollutants such as oil, sediment, and detergents generated during the cleaning process, it achieves water resource recycling, reduces operating costs, and minimizes environmental pollution. The following provides a detailed explanation from three aspects: principle, structure, and function:
1、 Core working principle
This device is based on a multi-stage treatment process of “pretreatment+deep purification+water quality regulation”, which works together through physical, chemical, biological and other means to remove pollutants from wastewater, making the water quality meet the standards for automotive cleaning water (usually close to the requirements of tap water or circulating water).
Physical separation: Remove suspended particles (such as sediment and vehicle impurities) through filtration, precipitation, centrifugation, and other methods.
Chemical purification: Using chemicals such as coagulants and emulsifiers to decompose or adsorb organic pollutants such as oil stains and detergents, reducing COD (chemical oxygen demand).
Deep filtration: By using precision filter cartridges, ultrafiltration membranes, etc. to further intercept small impurities and colloids, the water quality is ensured to be clear.
Sterilization and disinfection: Some equipment is equipped with ultraviolet or ozone sterilization devices to prevent the growth of microorganisms in circulating water and avoid residual odors or bacteria on the vehicle body.
2、 Main structure and function
The fully automatic car cleaning water treatment equipment usually consists of the following modules, and is automatically operated through a PLC control system (such as automatic water replenishment, backwashing, chemical addition, etc.):
Wastewater collection tank
Function: Collect wastewater from car cleaning (including sediment, oil stains, cleaning agents, etc.), and preliminarily precipitate large particle impurities.
Grille/hair filter
Function: Intercept large debris such as hair, fibers, and plastic fragments in wastewater to prevent subsequent equipment blockage.
Coagulation sedimentation tank/air flotation device
Construction: Includes a dosing system (for adding coagulants such as PAC and PAM), a reaction tank, a sedimentation tank (or an air flotation tank).
Function: By using chemicals, tiny suspended particles and oil stains are condensed into large flocs, which are then separated by gravity precipitation in sedimentation tanks or bubble adsorption in air flotation tanks, removing over 80% of suspended solids and some oil.
Sand filter/carbon filter tank
Construction: filled with quartz sand (coarse filtration), activated carbon (adsorption of odors, pigments, residual detergents).
Function: Further filter fine particles, adsorb organic pollutants and residual chlorine, improve water quality, taste and transparency.
Precision filtration system
Construction: Security filter (5-10 μ m filter element), ultrafiltration membrane module (optional).
Function: To intercept micrometer level impurities (such as colloids and bacterial debris) in water, ensuring that the water quality meets the clarity requirements of cleaning water.
Disinfection device
Common types: UV sterilizer, ozone generator.
Function: To kill bacteria, viruses, and algae in water, and prevent microbial contamination caused by long-term use of recycled water.
Clear water tank and circulation system
Function: Store processed clean water and connect it to the car washing machine through a water pump to achieve water resource recycling; Equipped with a liquid level sensor, it automatically replenishes new water to maintain water balance.
PLC control system
Function: Integrate sensors (such as liquid level, water turbidity, pH value) and actuators (such as valves and pumps) to automatically control the operation process of equipment (such as backwash cycle, dosage of chemicals), reduce manual operation, and ensure stable operation.
3、 Core role
Water conservation and emission reduction
The recovery rate of car cleaning wastewater can be increased to 70% -90%, significantly reducing the amount of fresh water used (traditional car washing consumes about 100-200L of water per vehicle, which can be reduced to 30-50L after recycling treatment), especially suitable for water scarce areas or places with strict environmental requirements.
Reduce operating costs
Reducing the cost of purchasing tap water and wastewater discharge (some regions charge for industrial wastewater discharge) can significantly save costs for long-term use.
protect the environment
Avoid discharging wastewater containing detergents and oil directly into municipal pipelines or natural water bodies, reduce pollution to soil and water sources, and comply with environmental regulations (such as the Comprehensive Wastewater Discharge Standard).
Ensure the quality of car washing
The treated water is clear and free of impurities, which can avoid the residual calcium and magnesium ions (scale) after traditional tap water car washing, reduce scratches on the car body, and improve the cleaning effect.
summarize
The fully automatic car cleaning water treatment equipment achieves efficient purification and recycling of car washing wastewater through modular design and intelligent control, with the triple advantages of water conservation, environmental protection, and economy. It is an ideal supporting equipment for modern car beauty salons, 4S stores, and other places. Its core value lies in transforming “wastewater” into “usable resources”, which not only responds to environmental policies but also reduces costs and increases efficiency for enterprises.
Post time: Jul-11-2025