Experimental Study on Pretreatment of Production Wastewater in Bone Pellet Plant
The wastewater produced by the bone pellet plant has a high Chemical Oxygen Demand(COD),as well as a large amount of protein colloidal substances and bone powder.In the past,evaporation concentration was used to treat production wastewater,which had high treatment costs and certain safety risks.The production wastewater contains high concentrations of organic matter and is biodegradable.This paper explores the pretreatment methods of bone pellet plant production wastewater through experiments,and analyzes the separation effect of different agents on protein in production wastewater.After pretreatment,the bone powder and protein in the production wastewater are separated,and the deproteinized wastewater is subjected to biochemical treatment,and the treated wastewater is further reused to achieve zero discharge of wastewater.The research results indicate that the protein separation effect of the raw water from bone pellet plant production wastewater is better after being treated with a coagulant combination of Polyaluminum Chloride(PAC),Polyacrylamide(PAM),and lime.
bone pellet plant production wastewaterpretreatmentprotein separationcoagulant
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