Water quality is becoming more and more crucial in the industry, firstly because of international standards that require more pure equipment and products, and secondly because of contaminated supply sources brought on by population growth and waste regulation, which is slower than the rate of growth.
Netsol Water currently focuses on enhancing the quality of the water we utilise and recycling the waste industrial waters. However, let's first go over the categories and types of industrial water filters.
What do industrial water filters do?
A system that uses a number of processes to filter the water used in industrial applications, to get rid of undesired elements is known as an industrial water filter.
These substances consist of particles or sediments that are either solid or dissolved, chemicals, odours, minerals, or other contaminants. In addition to parts or machinery in industrial applications, the primary purpose of industrial water filters is to preserve human health, when water is a primary or secondary ingredient in the product being processed.
What are the Categories and types of Industrial Water Filters?
Depending on the requirements of the impurities you want to eliminate, you can select an industrial water filtering system. These consist of:
1: Sediment filters used in industry
Industrial surface filters that physically push water through a membrane or cartridge filter, are one type of industrial solid sediment water filter.
Another option is depth filters, which capture contaminants from the granular media, using porous materials like anthracites, sand, zeolites, etc.
Depth versus surface filtration
The reason the depth filters are the most popular for industrial water filtration is that they can contain more dirt, without experiencing pressure drops or collapsing alternative systems.
Pressurized fluid restrains impurities either by direct impact or attractive molecular forces, when it moves through the medium. Specific numbers and types of filters are needed for various industrial applications.
2: Bag or cartridge filters
They enable for the use of finer filtering (1 or 5 microns) than a deep-bed filter, when combined with several 7-cartridge holders (15 to 25 microns). The use of disc-shaped plastic cartridges, which do not experience accelerated wear and can last much longer than deep bed filters and on all cartridges, whose lifetime is extremely short, allows for the filtering of enormous volumes of water without the need to change cartridges frequently.
Furthermore, self-cleaning disc filters can be automated and backwashed sequentially, to prevent halting the production of filtered water while using much less water, than deep-bed filters.
· Industrial deep bed filters
The kind of impurities to be eliminated will determine the materials utilized in a deep bed filter. In order to filter materials of various sizes and produce a pressure drop across the filter, filter media are often stacked. To hold the larger particles in place at first, the grains are larger.
The filter medium's size is then decreased to hold smaller particles in the intermediate phase, and the final layer is a gravel medium, which supports the filter medium and distributes the water, so that it leaves through distributors or nozzles. The collector or distributor is responsible for removing clean water or product from the system.
· Cartridge filters
The body of the cartridge is made of pressed polyethylene fibres or as a fabric, one of the most cost-effective filter media, although, it has a very limited lifespan. The medium traps pollutants while discharging pure water, when tainted water flows through it.
When compared to deep bed filters, water filter cartridges are relatively less expensive, and have significantly higher filtration effectiveness. The most popular cartridge types are Polyspun, Yarn, and Pleated.
· Bag Filter
Although, it could have a little better water flow, and if we apply pressure, good results may be produced, using these filters is equivalent to using cartridge filters. The fibrous material used in the filters allows water to pass through, while trapping suspended and solid particles.
These filters are less expensive than alternative techniques, appropriate for a wide range of applications, and sometimes a good fit for certain processes. Similar to cartridge filters, they require routine replacement and attention to pressure variations.
· Disc filter
They were initially developed to filter drip irrigation water for use in agriculture, but the same idea works just as well in the workplace.
Because of these systems' advanced technology, we can clean deep-bed systems with less water and faster, adapting to smaller spaces in addition to taking up less space. They are modular systems that can expand by including more filters, when a higher flow is required.
3: Reverse Osmosis
Only water molecules may flow through the semi-permeable membrane used in this purification technique. It is designed for polluted water to be pushed through the membrane, by pumping equipment at a specific pressure in order to yield pure water on the other side.
This technique, which employs molecular filtration, is ideal for demineralizing or desalinating brackish or seawater. Additionally, it can eliminate any form of impurity, including organic molecules, ions, salts, minerals, heavy metals, and microbes.
Although slow, the process can reject up to 60% of its output since it constantly self-cleans. Using this water, which is very good quality and has already undergone pretreatment before to entering osmosis, the latter, which could be considered wastewater, can be reversed.
4: Activated carbon
They are also referred to as activated carbon filters, but in our opinion, they serve more the purpose of a purifier than a filter because they clean the water of undesired organic matter, rather than removing solid particles. These packages contain grains of activated carbon.
Chemical contaminants including chlorine, pesticides, iron, detergents, and hydrogen sulphide, can all be removed by them. They also enhance the water's quality by getting rid
of unwanted flavours and odours. When filters become clogged with pollutants, they need to be replaced.
5: Water softener: Ion exchange systems
The water softener, which is used to soften hard water, is the most common and used ion exchanger. Calcium and magnesium compounds found in hard water can precipitate to form layers, which can block pipes and harm industrial machinery, particularly which uses high-temperature water, such as boilers and heaters.
The two minerals that cause water to foul up the most are calcium and magnesium. When water travels through beads made of resin, softener resins exchange sodium (Na), retaining calcium and magnesium ions while releasing sodium. Therefore, it is required to regenerate with a brine solution to re-saturate the resin, with this element and release the calcium and magnesium so that it can continue to function, after it has become saturated with calcium and magnesium. The brine tank needs to periodically have salt (sodium) supplied.
6: Demineralizers using resins for ion exchange
Demineralization can apply to any water-treatment procedure that eliminates minerals, but it is typically only used to describe ion exchange procedures that remove practically all ionic minerals. Demineralization and deionization are frequently used interchangeably. Cation and anion exchange resins are used in demineralization, sometimes even in the same column or bed.
With all of the contaminants that might be present in water, it's critical to realise that they can be managed and controlled to make them less of an issue.
Your systems can be shielded from the harm that each pollutant may bring about, if the appropriate water treatment, water quality balancing for each system, and equipment are used.