First time I've ever asked for help here- imagine a 'cave' that holds 60,000 gals of dirty water. Cave is divided in two - a 50,000 gal side and 10,000gal side- by a 'weir' extending almost to the ceiling.The fine particles in the water are supposed to settle on the large side and the 11 stage centrifugal pump draws from the smaller side. However, the retention time is not suffiecient for settling, so I end up pumping 'dirty water'. Cleaning the accumulated 'sludge' is almost impossible & its impractical to construct another cave. The pumps operate automatically (ie no attendant)for approx 12 hrs/day. A strainer is impractical because no-one there to clean it constantly.My question- is there anything else I can install on suction line to remove very fine particles? hydroclone etc? Suction size is 4", length approx 20', pump is 11 stage, 325gpm, 1125' head
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