Treatment Of Fermentation Type Of Pharmaceutical Wastewater By SMBBR

As a kind of organic industrial wastewater in the process of pharmaceuticalproduction, fermentation pharmaceutical wastewater was regarded as a seriousenvironmental pollution. However in the treatment process of fermentation pharmaceuticalwastewater, there were many problems in the industrial design, construction, operationmanagement et al. The poorer effect was exigisted in treating fermentation pharmaceuticalwastewater.Therefore, it can’t meet the requirement for the fermentation pharmaceuticalindustrial wastewater pollutant emission standard(GB21903-2008).There were many characteristics of fermentation pharmaceutical wastewater, such ascomplicated composition, toxicity, deep chromaticity, high upended solids and high saltcontent, poor biodegradability and so on. According the condition, the special moving bedbiofilm reactor was used on the study of the fermentation types of pharmaceuticalwastewater to study the treatment effect of SMBBR on high concentration, high ammonianitrogen, high COD and organic refractory wastewater.The fermentation pharmaceutical wastewater was pretreated in a special moving bedbiofilm reactor(SMBBR), at the same time adding the high-activity denitrifying bacteriaDNF409and biological carrier SDC-03. Packing filling ratio was30%and takingcontinuous water, at same time, adding20g high-activity denitrifying bacteria (namedDNF-409) into the SMBBR twice per day, seperately in the morning and evening.Condition of reaction temperature was22~26℃, DO=2~4mg/L,MLSS=2000mg/L,hydraulic retention time was16h, the fermentation type of pharmaceutical wastewater,hanging membrane cycle was about30d for fermentation pharmaceutical wastewater.SDC-03type biological carrier was beneficial to increasing the number of reaction poolmicroorganisms and enrich various bacteria, so it could improve the processing efficiencyof SMBBR system.The growth of biofilm in SMBBR reactor had undergone three stages approximately: the adaptation, growth and stability. In the hang membrane process of SMBBR forfermentation pharmaceutical wastewater, the removal rate of NH3-N and COD were notimprove synchronously. In the process of biofilm growing, the multiplication rate of goodkeep heterotrophic bacteria was very high, nitrifying bacteria was slower. The averageremoval rate of COD, NH3-N, TN and TP were72.45%,27.72%,18.54%and84.58%respectively, which indicates that the biodegradability of the wastewater was improved.After the success of the hanging membrane, comparation was made between theCASS and SMBBR on fermentation type of pharmaceutical wastewater treatment. Theresults was shown that the quality of the same kind of pharmaceutical fermentationwastewater treatment, SMBBR of removal rate of TP, SS and chroma was higher than thatof CASS, but the removal rate of NH3-N and COD than CASS advantage was not obvious.SMBBR didn’t need to set back, it has advantages less power consumption,lessexcess sludge, lowersludge disposal cost Comprehensived consideration, the treatmenteffect of SMBBR process was higher than that of CASS process slightly, the loweroperation maintenance cost and the flexible controlling was co-existed, and the operationmanagement was more simple. In the northern region, under the same operationparameters, using the SMBBR process to treat fermentation type of pharmaceuticalwastewater was better than CASS process.