Truck wash wastewater needs to be specially treated due to a variety of waste components in the stream that a municipal sewer cannot handle or because the truck wash is not tied into a municipal drain. Wastewater treatment system can help in either case.
Washing trucks out on the street has been restricted for a long time in many communities. The reasons for the restriction were mainly ecological considerations, because the washing water contains oils, lubricants, tar, suspended matter, heavy metals and micro-organisms, which often end up in soils and thus are a danger to the groundwater.
A typical truck wash will have a pit or large holding tank that captures the dirty water. Specific treatment steps can be incorporated to fit a specific facility needs, including:
- A coarse particle separator for large solids and stones
- A grease trap for capturing grease from the trucks
- An oil water separator for removing oil from the waste stream
Lower flow rate system will be treated in a cone bottom tank. This tank will include metering pumps for adding chemistry and a large mixer. For larger flowrates the flow will go through a flocculation chamber for chemical addition and then a clarifier. The clarifier will further separate the solids from the liquid solution. The solution will then be run through a filter press for dewatering. The dried and captured solids can be hauled away. The clean water filtrate can either:
- Discharged to the municipal drain
- Be returned as process/cleaning water
Additional treatment steps may include microfiltration, reverse osmosis (RO), and/or Deionization (DI) can be added to further clean the water for reuse.
Across the country and around the world, the need for washing vehicles correctly is becoming an important factor in everyone’s environmental compliance. Wash bays keep mud and sludge, harmful chemicals, noxious weed seeds, invasive species and other nasty stuff from draining off in the ground or sewer, polluting our rivers and streams or spreading harmful vegetation. Read about compliance throughout this site.
Wash bays should do a lot more than create a safe zone for vehicle washing. They need to be equipped with powerful water or foam spray systems, including under carriage nozzles, that wash off damaging grime. They should filter and contain that harmful run-off, and then recycle wastewater. When it comes to rugged equipment, there are two types of wash racks: above-ground steel or permanent concrete wash pads. Each option is specifically tailored to the kind of equipment and particular needs of your company or organization.
Wash Rack Filtration Systems
- Modular systems can be expanded to meet future requirements
- Systems can be adapted to almost any truck wash layout
- Line-mounted flow meters
- Computerized system design
- Rotary vane pumps, the industry standard for trouble-free service, efficiency and corrosion resistance
- Pressure relief valves
- Custom Control systems
- Needle valves for precise flow and pressure control
- All gauges, meters and controls are mounted next to the control panel for ease of operation
- Feed-water solenoid valve, shuts off feed-water when system is not operating
- Low-pressure switch, protects the pump from cavitation and damage caused by inadequate inlet pressure
Wash Rack ApplicationsOil, mud, grease, heavy metals, soaps, detergents, and other chemicals and particulate matter are all substances that build up on industrial vehicles, trucks and worksites. It’s important to have a system in place that cleans equipment and disposes of wash water and debris properly to prevent these substances from becoming pollutants.
Industrial wash racks should feature water treatment and filtration systems to clean the water recycling systems ensure an eco-friendly operation. These closed-loop wash rack systems offer 100% water reclamation systems designed for industrial users who want to clean and degrease parts, large tools and equipment on their shop floor or manufacturing plant. Look for a low profile 5” high rack with full width ramp for easy and safe access for even unsteady equipment like forklifts, man lifts, dollies and maintenance equipment. You’re really addressing two issues: creating a movable and enclosed washing area, while also assuring effluent can be adequately processed for proper discharge for sustainable, compliant operations.
Wash Racks Can Save You Money
- The above ground wash racks are ideal in places where the operator must meet track-out requirements without acquiring leasehold improvements.
- The right wash rack will reduce your material and labor costs to keep your equipment clean.
- On site wash racks eliminate the need to use commercial car or truck washes.
- Wash water recycling cuts water usage, detergent and solvent usage
- Eliminate fines and stop work orders: comply with local, state and federal regulations on proper wash water disposal.
- Concrete containment pads are designed for heavy or medium mud loads often associated with trenchers, garbage trucks, street sweepers, dump trucks and many other pieces of equipment.
- No construction required. Above ground wash racks are ideal on properties in which a semi-permanent installation is preferred.