What Are The Dimensions Of The Sand Filter?

The homogeneous sand filter has a 0.9–1 m deep bed and typically of

0.85–1.7 mm of

sand (effective size 0.9 mm) placed on a 50 mm layer of 4–8 mm or 75 mm of 6.7–13.2 mm gravel. Homogeneous sand of effective size up to 1.3 mm has also been used.

How many square feet is my sand filter?

Sand filters usually have a filter rate

about 15 GPM per square foot

, DE filters can filter about 2 GPM per square foot, and cartridge filters are capable of about 0.25 GPM per square foot. For example, if you needed 22 GPM and you wanted a DE filter, you would need a filter size of at least 11 square feet.

What size is my sand filter?

To identify your filter’s size, you can measure specific parts of the filter to determine its size. For sand filters,

measure the diameter of the tank

. There are a couple of ways to measure the tank’s diameter: measure the circumference, then solve for the diameter, or you can use two sticks and a measuring tape.

What is the surface area of a 24 sand filter?

How much sand does a sand filter need?

How Much Sand to Add to Pool Filters? Sand filters are not filled completely full of sand, but only

about 2/3 full

, to allow “Freeboard” space in the tank, above the sand bed.

Can a pool filter be too big?

No. The reason being is that

there is no true “minimum flow rate” of a filter

. The tank may take longer to fill up if we have a 1⁄2 HP pump on a 800 pound commercial sand tank but the filter will still scrub the water to the same standard.

What size sand filter do I need for a 15000 gallon pool?

For instance,

a 16” sand filtered

system has a 1.55′′ sq. ft filtered area, making it ideal for a 15,000- gallon pool.

What is the filter on a pool?

How Your Filter System Works: The Short Answer. Your pump pulls the pool water from the skimmer(s) on the pool wall and the main drain(s) on or near the bottom of the pool. The water flows through the pump to the filter, which

removes dirt, debris

, and (if the filter is good) bacteria.

How many square feet should my pool filter be?

Most D.E. filters have an effective filtration area of

20–100 square feet

.

What is the formula for filter sizing?

The filter flow rate is defined as the amount of water filtered over a given period of time, expressed in gallons per minute. Filter flow rate formula:

Filter area x filter rate = filter flow rate in gpm

. The “filter area” is the surface area of the filter medium. It is measured in square feet.

How do you calculate the flow rate of a sand filter?

Multiply the surface area of the filter by the velocity of the water through the filter

to obtain the volumetric flow rate in gallons per minute. For example, for a surface area of 100 square feet and a velocity of 0.1 gallons per minute per square foot, (100 ft^2)*(0.1 gpm/ft^2) = 10 gallons per minute.

What is surface area of a 30 sand filter?

How do you calculate the area of a pool filter?

Another rule of thumb I have for pool filter size is to look at the swimming pool size in gallons. If you’ve never calculated this before, take some measurements. The formula is

Length x Width x Average Depth x 7.5

, for rectangular pools. For oval pools, change the multiplier from 7.5 to 5.9.

How often should you backwash a sand filter?

How Often Should You Backwash a Pool Sand Filter? As a general rule of thumb, you should backwash and rinse your filter

about once a fortnight

. The optimal time is right after you vacuum the pool. However, if your pool has had a lot more use than normal, it may be necessary to backwash once a week.

What happens if you put too much sand in a sand filter?

Too much sand and your

filter will likely not run correctly or may break when reassembling

. Too little sand and you will have cloudy water no matter how much your filter runs. For this reason check your filter manufacturer’s specs.

How many bags of sand does a pool filter take?