filtration aerobic treatment waste water WASTE WATER FILTRATION ADI has the expertise to help any water purveyor (community, business, government) address their potable water issues and improve the water quality filtration supplied to their customers. Filtration separation is the quickest activated sludge separation method. Its speed makes it well catered for biological dephosphotation. Nothing is more reassuring than having a highly skilled and competent company overlooking water quality control. The water filtration experience ADI Systems possesses spans into many industries by offering such services as arsenic removal, manganese and iron removal, water decontamination, purification, and sterilization.