Sand Carbon Filtration
Sand filtration is one of the oldest wastewater treatment technologies known. If properly designed, constructed, operated and maintained, a sand filter produces a very high quality effluent. Sand filters are beds of granular material, or sand, drained from underneath so that pretreated water and wastewater can be treated, collected and distributed to the land application system.
Carbon filters uses Granular activated charcoal, is made from raw materials (such as coconut shells or coal) that are high in carbon. Heat is used to increase (activate) the surface area of the carbon; this is why these filters are sometimes referred to as “charcoal” filters.
The activated carbon removes Colours, Bad Odours, Dissolved Organic impurities and other chemicals that are dissolved in water passing through a filter containing GAC by trapping the chemical in the GAC. However, other chemicals, like sodium or nitrate, are not attracted to the carbon and are not removed. Eventually, the ability of the GAC to bind and remove chemicals is used up and new, or regenerated, GAC is needed.
The Sand and Carbon Filters are used individually or in combinations for below applications:
- Pretreatment of R.O./D.M./U.F./Softener
- Posttreatment of Waste Water before Discharge
- Municipal Water Filtration
- Industrial Water Purification
- Chemical Purification