What is a fabric bag filter? Applications in water treatment

A fabric bag filter is a filter tank that contains one or more filter bags that are placed inside the bag filter housing to remove suspended solids from water. Specific bag filters vary depending on the industry in which they are used. This filtration method is both versatile and cost-effective for quickly filtering a wide range of capacities. They are great for reducing the amount of silt, sand, dirt, and other sediments in your water.

Bag filters remove everything from sediment to other solids to some forms of liquid from water in both commercial and industrial applications. With high sediment holding capacity, high flow rates, and easy replacement, bag filter systems are one of the top choices for water filtration. As the name suggests, a bag filter is a bag of filter media that sits in a filter housing. Bag filter systems work on a simple principle. A seal is created between the bag filter and the housing, preventing filtered contaminants or unfiltered water from escaping after filtration. Filtered water can pass through while everything else remains in the filter bag. Made from unique materials, each bag is constructed to be durable and does not allow any pollutants or other harmful particles to pass through.

Bag filter water treatment is an effective method of reducing particles in large volumes of water at high flow rates. Other filtration methods are not cost effective for such large volumes of water. Bag filters are an excellent choice for industrial applications, brewing, pre-filtration, etc.

Think of bag filter water treatment as a way to remove large (lots) of things with large volumes of water at high flow rates – it is not a dedicated filtration method.

Benefits of water treatment by bag filter

• Filters large volumes of water at high flow rates – easily filters 90 – 2,400 gallons per minute (depending on filter and filter housing)
  
• Bag filters have high dirt holding capacity – less frequent bag filter changes than cartridge filters
  
• Withstands exposure to a wide variety of liquids
  
• Bag filters are easy to install and replace
  
• One of the most cost-effective ways to treat large volumes of water – cartridge filters cannot compete at the same flow rate for price

Disadvantages of water treatment by bag filter

Most importantly, bag filtration does not remove fine particles, bacteria, or chemicals. (If fine particles, bacteria, or chemicals are not a problem in your water, skip this point.) Filtering with cartridges or membranes provides more precise results including the ability to remove fine particles, bacteria, or chemicals. However, cartridges and membranes are more expensive, so it is important to consider what your end goal is and what your budget is. When applied correctly, bag filtration can be more efficient and cost-effective than cartridges and membranes.

What are the applications of water treatment using filter bags?

• Agricultural Round
  Pretreatment
  Brewing
  Final Product Cleaning Not So Important
  Remove Coarse Particles That Could Damage Your Equipment
  Remove Tough Contaminants From Liquid Streams
  Groundwater Filtration
  Cooling Water Filtration
  Industrial Process Water
  Wastewater

See more: What is a Pressure Filter Tank? Structure of Pressure Filter Tank, Operating Principle

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