Pysicochemical-biochemical process for treating ammonia-nitrogen sewage from catalytic cracking catalyst production

Application Number  00129420 Application Date  2000.12.21
Publication Number  1359863 Publication Date  2002.07.24
Priority Information    
Applicant(s) Name  Qilu Petro-Chemical Co., China Petro-Chemical Corp  
Inventor(s) Name  Pan Xianfeng;Yang Xiaoyi;Huang Bin  
Patent Agency Code  37212 Patent Agent  gong tonghai
AbstractA process for treating sewage containing ammoniacal nitrogen of catalytic cracking catalyst includes physiochemically pretreating, filtering to remove suspended substance, optional regulation of pH value to 11-11.5 and reverse stripping, mixing it with house sewage, adding methanol, and anaerobic denitrifying and aerobic nitrating. Its advantage is high effect (ammoniacal nitrogen less than 25 mg/L, COD less than 60 mg/L and SS less than 150 mg/L).