Our approach to wash water filtration systems
|How we determine what water filtration system you need for your wash bay|
|Selecting the correct filtration or recycle system for your wash bay wastewater treatment needs is critical. EnviroConcept ensure a thorough review of your individual site requirements is undertaken by our engineering team prior to recommending the most appropriate solution for your needs.Our process involves determining the following parameters when solving your wash water filtration requirements:|
1. Primary Solids
|During vehicle and equipment washing processes there are varying amounts of solids including dirt, sand, silt, clay and gravel that are produced. These solids must be collected along with the polluted wastewater in a collection system. This is generally achieved through an in-ground pit, or where portability is a factor, an EnviroConcept above-ground wash pad. The primary solids are collected and then transferred to an above-ground Solids Settling System for removal from the waste stream.|
2. Secondary Solids
|In most wash bay applications there will be free-floating (suspended) solids that do not readily drop-out of the water in a settling tank. As a result, an active solids separation filter is necessary. EnviroConcept provide a unique Continuous Media System (CMS) that acts like a cartridge filter but does not require cartridge changes.The EnviroConcept CMS filters the waste water to 5-microns nominal (with other micron ratings available upon request). By reducing secondary solids early in the filtration and wastewater treatment process, maintenance is significantly reduced on finer water filtration methods used later in the system.|
3. Oils & Grease
|If oil or grease is present in the waste stream it must be removed – most commonly to less than 50 parts per million (PPM). Consult your local Trade Waste Department for discharge limitations on oils, grease and hydrocarbons. Free-floating oils can be coalesced and then skimmed. EnviroConcept use a coalescing plate pack system and an active oil skimming belt system to remove free floating waste oils from the water.|
|When you have a high concentration of oils and greases, light hydrocarbons, antifreeze, pesticides, organic nitrogen, soaps and other organics our Bioreactor is the answer. The Biomass inside our Bioreactor increases the surface area for our Bugs to grow and our automatic dosing system allows for precise use of a Biological product for maximum digestion of waste within the waste water system.|
5. Emulsified Oils & Grease
|For emulsified oils, deep bed media filtration is required. Our approach to hydrocarbon removal depends on several things.|
Where heat, soaps, solvents or acid are used, oils are emulsified and remain suspended in the water column. It is then more difficult to remove. Our oil adsorbing media can reduce hydrocarbons to less than 10-PPM. By making multiple passes through the media, these emulsified oils can be removed.
6. Heavy Metals & Re-circulation Systems
|This final step can be skipped if no heavy metals are present in systems. When metals are present, we use a secondary polishing system with specialised media. By making multiple passes through the filter media (polishing) we obtain very good metals reduction rate. By filtering to this fine level, water clarity is optimized and maintenance is reduced on pressure washing equipment.|
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