Examples of using Sand filters in English and their translations into Vietnamese
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Sand filters larger particles.
This is especially important if treatment is by slow sand filters.
In combination with sand filters to remove impurities suspended in water.
Such as, under drain media retention elements, flow distributors in demineralizers,water softeners in pressure and gravity sand filters.
Pumps, 141 sand filters and 70 protein skimmers keep the tank waters clean and habitable.
Lower Town- supplied by water straight from slow sand filters(in the Powiśle and Praga districts).
To wrap it up, sand filters are the most economical option but require periodic backwashing.
Advances in media technology and balanced flow design providedirt-loading capabilities up to 15 times greater than sand filters of equivalent size.
Pumps, 141 sand filters and 70 protein skimmers keep the tank waters clean and habitable.
Much of the early work of hydrobiologists concentrated on the biological processes utilised in sewage treatment andwater purification especially slow sand filters.
Swimming pool sand filters Fiberglass swimming pool sand filter Side mount sand filter. .
Side mount bobbin wound fibreglass sand filter with multiportvalve for swimming pool The Side mount sand filters are heavy-duty and combine the world's best filtration technology.
Sand Filters- Dirt is removed from a sand filter by“backwashing” or reversing the water flow.
Throughout the 1800s, hundreds of slow sand filters were constructed in the UK and on the European continent.
Sand filters are more efficient when they are slightly dirty; consequently, they should only be backwashed when required by the increase in pressure.
Chemical reagents such as flocculants and sand filters may also be used to decrease the contamination of groundwater.
The sand filters are applicable for use in all types of pools such as in-ground pools, in-ground spas, as well as other water features.
Pikes high performance top mount sand filter Sand filters are used as a step in the water treatment process of water purification.
Sand filters in pools are used to extract impurities from the water by utilizing sand to collect debris as tiny as twenty microns.
Other common filtration processes, including slow sand filters, diatomaceous earth filters and membranes will remove 99% of Cryptosporidium.
Sand filters are the most commonly used technology but other technologies such as drum filters and membranes can also be used for filtration.
In addition to the components mentioned above, most rapid sand filters contain a flow controller, or filter control system, which regulates flow rates of water through the filter. .
This process is called in-depth filtration, as the impurities are not simply screened out or removed at the surface of the filter bed,as is the case in slow sand filters.
Throughout the 1800s, many slow sand filters were created within the United Kingdom and on the European continent.
Slow sand filters use a biological process to purify raw water to produce potable water.[11] They work by using a complex biological film that grows naturally on the surface of sand. .
Often referred to as a bio-sand filter for its presence of biological activity,slow sand filters contain very find sand, allowing for the removal of particles that are smaller than the spaces between the sand grains.
Commercial Sand Filters satisfy the requirements of the most demanding installations including pools installed with in poor cleaning systems, spas, fountains, public swimming pools, aquariums and industrial water treatment.
The sand used in rapid sand filters is coarser than the sand used in slow sand filters.
While simple sand filters and cartridge filters can easily achieve the SDI limits of the Rochem system the much lower limits required by other membrane systems can only be achieved by more complex filtration and chemical treatments.
The World Health Organization claims that slow sand filters offer the greatest quality in the improvement in the physical, chemical, and bacteriological of treated surface water.