Can anyone give me reference(s) to actual operating cases wherein seawater upto 50 or 100 ppm TSS is filtered through a single or dual media filter. The reference can be of pressure type or gravity type filter. One of my client's engineer is asking for a single stage media filter capable of treating worst case of 100 ppm influent TSS. This is a highly unlikely situation to occur. But I would even appreciate references to filters handling 20 to 30 ppm influent TSS and given SDI15 less than 4.