A practical way of removing the waste from the fish tank is possible through mechanical filtration. Modern recirculating system have an outlet with a filter called the microscreen of mesh size 40 to 100 microns. The presence of the micro screen has some advantage such as it reduced the load on biofilter, removes the organic impurities, improves and facilitates the biofiltration process. The type of micro screen used is called a drum filter and has the following functions: Filters the elements present in the water. The elements are pushed to the backwash area by the rotation of the drum. The solid waste is removed into the sludge tray by spraying water on the filter. The sludge is removed with water from the tank and is sent to external waste treatment.
How Mechanical filters are useful in RAS fish farming?
