Study On Sulfur Erythromycin Pharmaceutical Wastewater Treatment

Antibiotic production wastewater is a typical kind of nonbiodegradable industrial organic wastewater which has characteristic of high COD concentration, complicated compositions, and high concentration of nonbiodegradable organies. More than200enterprises in domestic produce about70kinds of antibiotics which has a20%～30%share of the world production, the wastewater emission is huge. Domestic and overseas treatment for antibiotics production waste water has many kinds of methods. Erythromycin thiocyanate in antibiotic production proportion is very big, and erythromycin thiocyanate pharmaceutical wastewater contains large number of SCN-which has inhibitive, poisonous effect on the microorganisms, which makes great influence on the biological treatment of wastewater. The treatment process for the sulfur erythromycin pharmaceutical wastewater is very rare, therefore, research and design a set of sulfur erythromycin pharmaceutical wastewater treatment process has a very important research significance and good application prospect.This paper taking a pharmaceutical factory sulfur erythromycin pharmaceutical waste water as raw water, analysis and design a set of sulfur erythromycin pharmaceutical wastewater treatment process, and distinguish the high concentration sulfur erythromycin wastewater between antibiotic mycelium residue wastewater, reaching antibiotic mycelium residue wastewater resourceful treatment purpose. The waste water treatment processes including enzyme-complexation reaction system, multi-dimension-catalytic system, catalytic-oxidation system, hydrolytic acidification system, IC system and ABR system; antibiotic mycelium residue wastewater treatment process is UBF system and ABR system. This paper check the process treatment capacity of sulfur erythromycin pharmaceutical wastement by the step-feeding and continuous feeding. The results are as following.(1) This process enzyme-complexation system in the pH of3.5-4, constant temperature35℃, and additives0.03%PFS, the removal rate of SCN-is90%, and COD removal rate can reach to50%.(2) The multi-dimension-catalytic system adopts iron-carbon micro-electrolysis model, iron/carbon ratio1:1, and based on this condition test the system optimal operation pH value, the study found that, when the pH value is greater than4, this system COD removal rate dropped substantially, so the system pH is set to4, continuous running after a while, the multi-dimension-catalytic system COD removal rate is between25%and35%, and the removal rate of SCN-is around18%.(3) To add1%NaClO to Catalytic-oxidation system, and based on this condition test the system optimal operation pH value, the study found that, with the pH value increases, the ammonia nitrogen removal rate to rise gradually, but when pH value higher than8.5, ammonia nitrogen removal rate began to fall, so the system pH is set to8-8.5, in such conditions, this system ammonia nitrogen removal rate is as high as87.8%, the COD removal rate is about30%, and the removal rate of SCN" is around50%.(4) Dosing facultative anaerobe into hydrolytic acidification system, temperature is RT, pH is6.5. The hydrolysis acidification system COD shows ascendant trend, proves that this system operation effect is great, and indirect proof that enzyme-complexation reaction system, multi-dimension-catalytic system and catalytic-oxidation system have a great removal effect for antibiotic composition and SCN-in the sulfur erythromycin pharmaceutical wastewater, the water will not affect the subsequent microbial normal growth and reproduction.(5) The IC system constant temperature35℃, pH8.5. IC system COD removal rate is above75%, ABR system COD removal rate is about50%.(6) During the continuous operation process of wastewater treatment, the system runs stably, and has a great treatment effect.(7) The antibiotic mycelium residue wastewater in the UBF-ABR reaction system has been pretreated by microwave process. UBF system has a constant temperature35℃, pH value8.5, COD removal rate is more than90%, at the same time, the highest under water concentration is13OOOmg/L, during the process of operation, it will produce a large amount of methane which can achieve resourceful treatment.