Slaughterhouse wastewater treatment system
Sewage of slaughterhouses have very high dose of pollutants and main organic compounds of mostly consist of blood, entrails, fecal and urinal contents, lipids, undigested foods, suspended materials, soluble proteins and particles. Slaughterhouse waste contains significant amounts of primary nutrients including phosphorus, nitrogen, potassium, COD, BOD, microbial pollutants and heavy metals, which are dangerous pollutants in water systems. In traditional methods Concrete ponds is used with or without aeration that this method cannot properly treat and purify such wastes. PGA biofiltration , using a combination system physical, chemical and biological methods based on biofilter is capable of purifying of sewage of slaughterhouse up to the standards of the Environmental Protection Organization and can be used again.