A Northwest Ohio commercial cleaning product manufacturer contacted IFM with regards to a pretreatment system for their industrial waste. Their industrial waste contains high concentrations of CBOD-5, total suspended solids, zinc and phosphorus.
Bench testing was completed on the manufacturer’s current facility so IFM could evaluate a variety of technologies for their pretreatment system and in the removal of zinc and phosphorus. Ultrafiltration and reverse osmosis were the two systems chosen to maximize the removal of waste and zinc and the recovery of clean water.
For more efficient removal of phosphorus it was determined that sodium aluminate must be added to the system. The sodium aluminate will coagulate with the phosphorus in the water and form a salt. This salt will then be rejected by the membranes and removed from the water.