Hello The filter clogging ...

Hello

The filter clogging is due to the formation of mud balls in that case, which increases the pressure on the filter that's what cause a salting-out of the particles previously retained on the filter which will rise the turbidity after filtration.

That turbidity after filtration could be also due to a bad backwach of the filter or a saturation of the media if it has been used for a long time.

And also if there is no pretreatment i think that coagulation floculation followed by a decantation could be a solution to reduce the mud ball formation and consequently a less rapid clogging of the filter which lead at the end to a good quality after filtration in terms of turbidity.