Treatment of Slaughterhouse Wastewater recycling issues to consider using biological methods. After a certain treatment sludge, sewage treatment Qinghai dead pigs can be used as animal feed slaughter sewage generally reddish brown, dead pig sewage treatment factory with an unpleasant stench, which contains a lot of blood, fat mass, wool, meat scraps, bone chips, offal debris, undigested food, feces and other contaminants, suspended solids content.