Selecting An Industrial Sand Filter
There are many different options to remove suspended solids and particulate matter from water. While there are some very complicated and require a lot of equipment and maintenance, others are relatively simple but also highly effective.
One such simple yet practical type of system to remove suspended solids in water is the use of an industrial sand filter. The key to these systems is the depth of the sand, allowing for maximum points of contact between the individual sand particles and the suspended solids in the water or fluid.
There are different types of industrial sand filter models. When making a choice in the model and the options for the filter system, there are several essential factors to keep in mind.
The capacity of the industrial sand filter to process the water is always going to be a factor of the tank size, the tank bed area as well as the flow rate and the concentration of solids in the water. While the nominal or average flow rate is always the most relevant number for typical operation, it is also essential to consider the maximum flow rate as well. Failing to do so in any type of application can result in times of operation where the filtration system does not have the capacity to meet the input, resulting in potential overflow or backup problems through the system.
Backwashing the System
With any type of filter media, backwashing is an important part of maintaining efficiency. With a sand filter for industrial use, carefully considering the backwashing process is essential.
Some systems use water from the filter itself, known as a self-source backwash. This prevents the need for a clean water source at the filter. The backwashing pushes contaminants and particulate matter out of the sand, restoring efficiency.
Ideally, look for a system that uses self-source water and completes an auto-backwash. This moves the backwash through the different tanks in the filter, while still keeping the filter in operation.