The vehicle wash industry appears to be more conscious of the need for wastewater treatment as the vehicle wash effluent has the potential to pollute waterways and groundwater. Scientifically-proven and advanced water technologies allow communities to reuse water for various purposes, including industrial, irrigation, cleaning and drinking. The water is treated differently depending upon the source and use of the water and how it gets delivered.
Vehicle-wash formulations are chemically based products, the majority of which are made up from a combination of three different types of surfactants. Wash water will contain 1% to 2% of chemical product diluted into water. Effluent leaving the vehicle-wash, in addition to its chemical composition, will contain dirt particles, organic matter, non-emulsified hydrocarbons, detergents, settlable materials, and oil residues. We, at Emvees, developed a unique Vehicle Wash Water Recycling Technology using Silicon Carbide membranes, focusing to meet the Recycling standards for reuse of water.
- Cost savings, with a very quick payback - often under 1.5 years.
- Reduces the volume of oily wastewater generated by up to 90%.
- Easy to operate the system, requires only simple maintenance.
- Incomparable manufacturer warranty on the membranes.
- Economical recycling of wastewater and replenishing valuable cleaning chemicals.
- Uses most modern technology of Silicon Carbide membranes developed by Cembrane- Denmark.
- Initially, water is pumped to an oil separation unit where the emulsified oil is separated by flotation.
- The oil free water is subjected to a chemical treatment by a flocculation unit, Where the added chemicals will aid in the formation of large flocs of the contaminants in the effluent and precipitation of suspended organic matter.
- Chemical treatment is followed by a sedimentation stage where the solids settle down to the bottom of the tank whereas the clear water rises up and flows out into a Filter Feed tank.
- The overflow from sedimentation tank is collected in a Filter feed tank, where sodium hypochlorite is added to chemically oxidize any residual color and organics remaining in the eff The water flowing into the Filter Feed is allowed to remain in the tank for a predetermined time so that there is enough contact time for the oxidant to totally disinfect the water.
- The outlet from Filter feed tank is pumped to the Pressure sand filter followed by Activated carbon filter to remove the remaining suspended particles and bad odor from the treated eff The outlet from the Activated carbon filter is the treated effluent. The Filters are to be backwashed from time to time with fresh water.
- The outlet from the Activated carbon filter is the treated effluent and is collected in a treated water tank.
- The treated water can be used again for vehicle washing purpose.