Multi media filter for filtering impurities in sewage treatment plants

Multi media filter for filtering impurities in sewage treatment plants

1、 Working principle

A filter tank is a device that uses one or several filtering media to pass the raw liquid through the medium under a certain pressure, removing impurities and achieving the purpose of filtration. The fillers inside are generally quartz sand, anthracite, granular porous ceramics, activated carbon, etc. Users can choose to use them according to their actual situation.

The filter tank is one of the traditional water treatment methods that mainly uses fillers to reduce turbidity in water, intercept suspended solids, organic matter, colloidal particles, microorganisms, chlorine odors, and some heavy metal ions in the water, and purify the water supply.

2、 Application scope

Mechanical filtration is widely used in water treatment processes, mainly for turbidity removal in water treatment, reverse osmosis, and pre-treatment of ion exchange softening desalination systems. It can also be used for sediment removal in surface water and groundwater. The inlet turbidity requirement is less than 20 degrees, and the outlet turbidity can reach below 3 degrees.

3、 Performance characteristics

1. Low equipment cost, low operating cost, and easy management

2. The filter material can be used multiple times after backwashing, and the filter material has a long service life

3. Good filtering effect and small footprint

Multi media filters can remove large suspended particles in water, thereby reducing the SDI value of water and meeting the water quality requirements for deep purification. The equipment has low cost, low operating expenses, and simple operation; The filter material has the characteristics of being backwashed, reusable, and having a long service life.

Multi media filters are widely used in water treatment processes, mainly for pre-treatment of turbidity removal, softened water, electrodialysis, reverse osmosis, and can also be used for sediment removal in surface water and groundwater.

Multi media filters can be divided into manual and fully automatic types according to their control types. The manual type mainly controls the operation, forward washing, and backwashing of the filter through valve adjustment; The fully automatic type uses FLECK controller to control the operation of the filter, including forward and reverse washing. According to the tank material, it can be divided into fiberglass tanks, carbon steel tanks, and stainless steel tanks. The inner wall of the tank can be coated with epoxy coating or lined with adhesive for corrosion prevention according to user requirements.

Multi media filter for filtering impurities in sewage treatment plants