臭氧氧化+UASB+SBR+深度脱碳工艺处理制药废水

Oxidation-UASB-SBR-Deep Decarburization Combined Process for Treatment of Pharmaceutical Wastewater

采用"臭氧氧化+UASB+SBR+深度脱碳"工艺处理含乙酰类化合物的制药废水,结果表明,添加NaOH中和预处理,调节pH值至8.0~9.5,可使Zn^2+质量浓度由12 000~18 000 mg/L下降至8 mg/L以下;臭氧氧化化学合成制药废水,臭氧最佳投加质量浓度为60 mg/L;UASB+SBR生化反应,进水CODCr质量浓度为8 000±232 mg/L,NH4^+-N质量浓度为70±10 mg/L,CODCr和NH4^+-N去除率分别为95%,91%以上,处理效果稳定;深度脱碳"混凝沉淀+臭氧氧化+生物活性炭(BAC)"组合工艺,混凝沉淀去除悬浮状的COD_(Cr),可降低臭氧氧化投加量,臭氧最佳投加质量浓度为15 mg/L,臭氧氧化后再配合BAC使用,无需曝气和更换活性炭。组合工艺CODCr,NH4^+-N,SS去除率分别为98%,98%和94%以上,出水优于GB 21905—2008《提取类制药工业水污染物排放标准》排放标准,处理费用仅为每t 1.8元,为制药企业废水处理的工艺选择提供科学的参考依据。

"Oxidation+UASB+SBR+Deep decarbonization"process to treat pharmaceutical wastewater containing acetyl compounds,the results showed that adding NaOH to neutralize the pretreatment and adjusting the pH to 8.0~9.5 can reduce Zn2+from 12000~18000 mg/L to less than 8 mg/L;Using ozone to oxidize chemical synthesis pharmaceutical wastewater,the optimal ozone dosage was 60 mg/L;The biochemical reaction with UASB and SBR,CODCr and NH4+-N of influent were equal to 8000±232 and 70±10 mg/L,the removal rate of CODCr and NH4+-N were above 95%and above 91%,the treatment effect was stable;Using the“Coagulation sedimentation+Oxidation+BAC”combined process for deep decarburization,coagulation sedimentation to remove suspended CODCr,which can reduce the dosage of ozone of Oxidation,the optimal dosage was 15 mg/L.After oxidation,it was used with BAC without aeration and replacement of activated carbon;The removal rates of CODCr,NH4+-N and SS of this combined process were above 98%,98%and 94%,the effluent was better than the emission standard of GB 21905—2008“Exhaust Standards for Extracting Pharmaceutical Industry Water Pollutants”,and the treatment cost was only 1.8 yuan/t,and it can provide a scientific reference for the selection of wastewater treatment processes of similar pharmaceutical companies.