How to backwash outdoor water filter?

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Written By John Stephen
I’m John, the person behind the aquahow blog. I love to investigate water conditions and ways of building water filters. Mostly for my aquariums and home use.

Backwashing the water filter is essential for keeping the water filter in excellent condition. The backwashing water filter comes with a large tank. The filter is designed in a way that cleans and restores itself by Backwashing.

The backwashing process consists of reversing the water flow in the other direction during the cleaning. The method enables the filter to remove the dirt and harmful particles from the water tank.

During the cleaning, water moves from the bottom of the tank where the filter bed is fitted. The water lifts and rinses the bed and exits the water outside through the top of the tank.

How does backwash outdoor water filter work?

The outdoor water filter mechanism design to remove the dust, harmful bacteria, and a large chunk of material passed through the water. The filter bed contains a granular substance. Every filter will have a different type of powdery substance based on types and need. 

The granular substances are often made of carbon, sand, garnet, Zeolite, granular manganese dioxide, anthracite, and greensand. These substances are known for filtering the water effectively.

When the water passes through these substances, the harmful material is trapped in the granular substance making the water clean. Some substances are known for killing harmful bacteria, e.g., granular carbon matter.

Carbon is a natural element that prevents bacteria from passing through the water.

As a final result, you get clean drinkable water in your home. Remember, the granular substances have a limit to hold the harmful substances. After some time, the large amount of the material trapped in the tank would make the water squalid. Therefore, it is advisable to clean the tank regularly to keep the tank bed clean.

Pictorial depiction of the Backwash outdoor water filter:

In the image, you can see the backwash outdoor water filter filled with water. The mechanism of cleaning the water in the filtration process is quite simple.

The tank filled with unfiltered water enters from the left side. You can control the force using the control valve. Once the water enters the tank, it then passed through the medium. The medium is used with different materials that clean and remove the harmful particles from the water. In the process, water moves from one medium to another. In every step, the water removes the substances dissolved in the water.

The water reaches the bottom of the tank, where all the harmful substances are collected. From there, the water again moves to the top by center tube. The tube is called “Riser” or “Dip Tube.” The water also moves the top and exits through the right side of the filter.

Additionally, the filter also consists of a drain line that is used when you want to clean the filter. You can see on the top of the picture where the drain line pipe is fixed. The drain line is closed during the water filtration process. It serves when you want to remove the stored substances at the bottom of the tank during the cleaning.

Backwash Monitor:

During the Backwashing, you will generally lose some amount of water in the process. It is estimated that the average household loses 2 – 3 % of water annually. Therefore, it is essential to track the loss using the meter reading.

The monitoring system would allow you to record the water loss. The sensor collects the water loss data and presents it to the users, which then can be analyzed later. You can prevent water loss by using the system smartly.

Sensors actively record the media level and regulate the expansion.  The media blocks any substance from flowing with the water. It traps them at the bottom layer and concedes clean water to exit from the pipe. It scrubs out harmful particles making the water clean.

The expansion process in the media is crucial for cleaning the water. The low pressure would result in the loss of water. In contrast, the high expansion rate would push the filter media to escape the exit pipe filter. The filter should be running on the predefined setting, making it more reliable during the filtration process.

Importance of Filter Media:

The backwash outdoor water filter comes in different sizes and shapes. The crucial part of the water filtration process lies under the filter media. When you decide to purchase the Backwash outdoor water filter for your home or offices, always look for the filter media content specification.

There are several types of filter media used in the filters. The filter media cleans the particles from the water and traps them in the filter’s bottom layer.

The material you find in the filter varied depending on the use. For example, some filter media uses only sand to clean the water. You will also find the filter media made of crumb rubber, crushed glass, or granite.

You have options to select the filter media based on your water treatment requirement. You can also go with a multi-media filter. This type of water filter comes with a different layer of media. The water passes through each media before it exits the filter.

The purpose behind having multiple layers is the one type of media would not be sufficient for cleaning the water. The water still may contain harmful particles. The different layers of the media guarantee clean water.

Some high-end backwash outdoor water filter can remove harmful germs, iron, chlorine, sulfur, sediment, etc. Anything that makes the water contaminated will be removed during the filtration process.

Benefits of Backwash Outdoor Water filter:

01. The system is entirely autonomous. Once it is installed, it runs continuously without needing a manual operation, reducing the operation cost.

02. The system adjusts the pressure effectively during the filtration process.

03. The material used in the water filter provides long term sustainability. It is not susceptible to leakage or biological growth around or internal area of the filter.

04. Fully customization of the filter process is possible. You can change the media, the pressure based on your water quality problem.

05. Require less preparation and installation time and make it active for the filtration process.

06. The backwash system cleans the filter itself when the system detects a partial clog in the water. You do not need to regulate the filter for cleaning.

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