A sand filter is used for medium-sized granular layers of a specific size and depth that drains pre-purified water or refined effluent from the filtrate through the filter, and a large proportion of the particles in the entire bed are removed uniformly. The first thing to look at when designing a sandblast is to provide optimal quality water with minimal investment and guidance.
Designer sand filter designers
There are many factors in the design of the filtration process for medium sand filters:
- Topography of the place
- Workshop size
- Raw water quality
- Types of pre-treatment processes
- New and advanced filter types
- Types of filtering and cleaning systems
- Control the filtration rate
- Types of filter packages
- Chemical supply points
The topography of the refinery site should be carefully evaluated before design. Because the type and arrangement of each of the filtration processes is determined based on it. Available new filter sand filters, filter media and filter control systems are available at any moment in the marke.Although there are a variety of sandblasting products on the market, there may be a problem one or two years after shelling. For example, small companies can be named as small aluminum chips like filter media. The finished parts dissolve aluminum chloride slowly and cause the coagulation and flocculation to occur in the filter bed and eliminate the need for a coagulant.
The phenomenon is very interesting and makes the filters work well during the first three to six months. But after 9 to 12 months of navigation, the filter bed turns into large pieces with molten aluminum chips.
Sand filter wash system
The filter wash system has four designs:
- Aerial Wash Tank (Altitude)
- Direct Pumping
- Wash yourself
- Continuous flush filters
The self-waster filtering system may be a dedicated unit or a typical design engineered by an engineer. Filter selection based on the capacity of the refinery.