Filter Sand
- Tuna Silica Sand
- January 01, 2019
What is Filter Sand?
Filter sand consists of naturally sourced quartz and silica sands produced for use in treatment plants, swimming pools, and drinking water purification to filter, clean, and free water from sediments, eliminate turbidity, remove small suspended particles, eliminate iron and manganese, and oxidize ammonium. Filter sand is produced from natural quartz sands after washing and screening processes in full compliance with TS EN 12904 standards and is classified into the desired dimensions.
Properties of Filter Sand
Quartz sands used as filter sands do not dissolve in acid tests and do not undergo mass loss. It is mandatory for quartz filter sands to comply with TS EN 12904 standards. At our facility, filter sands and pool filter sands are subjected to special washing and classification processes and are sold in 25 kg bags and 1.5-ton big bags in line with TSE 12904 standards. When high-quality and correct products are selected, the purified drinking water quality increases accordingly. Please contact our company for filter sand, swimming pool filter sand, and pool filter sand prices.
Quartz filter sands used in filters have high abrasion resistance. Therefore, they offer long-term solutions in filtration processes.
High quality levels have been achieved by utilizing them especially in drinking water treatment plants, wastewater treatment plants, and swimming pools. The high silica ratio and high abrasion resistance offer premium quality and long-term solutions in filtration. In fast and slow sand filter systems, rapid sand filters generally operate with a nozzle and backwash system within the filter sand range of 0.800-1.200 mm. In slow sand filters, bedding is done with 15-25 mm gravel and 5-15 mm gravel. On top of this, 3-5 mm and 1-3 mm gravel are placed. The uppermost layer consists of filter sand placed at a height of approximately 1 meter within the range of 0.300-0.500 mm. The water flow rate is lower in slow filters. Slow or rapid sand filter selection is made according to the chemical structure of the water and the pollution rate. Sometimes, the upper layer filter sand dimensions can be 0.400-0.800 mm, 0.600-1.0 mm, or within a designated alternative size range.
There is a fine grading of 0.400-0.800 mm and 0.800-1.200 mm, and a coarse gravel grading available as 1-3 mm, 3-5 mm, 5-8 mm, 8-16 mm, and 16-32 mm.
Sand Filtration
Sand filters are highly efficient units designed to remove insoluble particles of various sizes and suspended solids from water. While sand filters trap suspended solids in the water, they also protect downstream units from sediment buildup, ensuring they fulfill their duties completely. Therefore, the main unit that must absolutely be present in a general treatment system is the sand filter.
Fully Automatic Sand Filters
Fully automatic sand filters feature a structure consisting of quartz and anthracite layers of different sizes inside polyethylene or steel tanks. Thanks to this established structure, filtration is not only limited to the top surface of the filter bed but spreads across all layers, ensuring higher efficiency.
Where is Filter Sand Used?
Quartz filter sand is mainly used in drinking water treatment plants, wastewater treatment plants, boiler filters, and swimming pools. It is extensively utilized in drinking water facilities, cleaning the wastewater of industrial enterprises, and rendering natural waters more potable by purifying them. Based on customer demand, it is processed as pool filtration sand or water treatment sand. It is produced by fully automated machinery through a hands-free system, and after establishing all hygienic conditions, it is shipped either via silobas (bulk powder tankers) or tipper trucks.
When Should Pool Filter Sand Be Replaced?
In cases where calcification or petrification does not occur in pool filter sands, it is generally recommended to replace quartz pool sands once every 5 years. Pool filter maintenance should be performed annually. During filtration, each backwash operation discharges a certain amount of sand into the drain. Therefore, while performing pool filter maintenance at the beginning of the season, it is mandatory to top up the missing sand, and if there is petrification in the quartz pool sands, the sand must be completely replaced with new sand.