How to Select a Self Cleaning Filter

1. Pre-treatment
Pre-treatment in water filtration refers to the process of removing or reducing suspended solids and colloids in water to a certain level, meeting general water use requirements.

Common pre-treatment methods for water filtration include:

1. Sedimentation

   • Using natural sedimentation (e.g., grit chambers) or chemical softening (e.g., adding chemical agents) to precipitate and remove silt, large suspended particles, and temporarily hardened sediments.

2. Filtration

   • Passing the water through granular filter media to trap and remove impurities. This is typically achieved using equipment such as self-cleaning filters, fully automatic filters, backwash filters, or brush-type filters.

3. Coagulation and Clarification

   • Using coagulants to promote the contact and adsorption of solid particles in water, altering their size, shape, and density to facilitate separation from the water.

2. Key Factors for Self Cleaning Filter Selection

1. Water treatment capacity
2. System pipeline pressure
3. Required filtration precision
4. Concentration of suspended solids in the filtered impurities
5. Physical and chemical properties of the filtration medium

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Kris

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