预处理-水解酸化-接触氧化处理汽车配件废水研究  

Pretreatment-Hydrolysis Acidification-Contact Oxidation Treatment of Auto Parts Wastewater

作　　者：朱加豪 张序 周云[2,3] 王钧 ZHU Jiahao;ZHANG Xu;ZHOU Yun;WANG Jun(School of Environmental Science and Engineering,Suzhou University of Science and Technology,215009;School of Civil Engineering,Suzhou University of Science and Technology,215009;Suzhou Branch of the Grand Canal cultural Belt Construction Research Institute,215006,Suzhou,China)

机构地区：[1]苏州科技大学环境科学与工程学院,215009 [2]苏州科技大学土木工程学院,215009 [3]大运河文化带建设研究院苏州分院,江苏苏州215006

出　　处：《水处理技术》2023年第5期125-128,134,共5页Technology of Water Treatment

基　　金：水体污染控制与治理科技重大专项(2017ZX07201001);东吴智库—大运河文化带建设项目(18SZDYH002)。

摘　　要：通过将物化预处理和水解酸化-接触氧化工艺组合,对汽车配件废水的污染物去除效率和微生物的生物活性进行了研究。结果表明,物化预处理过程中对汽车配件废水的最佳组合为:pH为9.97,PAM为2.67 mg/L,PAC为1.59 g/L,最佳组合下对COD去除效率最高达到80.0%。水解酸化-接触氧化工艺对物化预处理后的废水,在HRT为10 h、DO为2~3 mg/L时,其主要污染物指标BOD5和COD的去除率分别高达92.7%±0.53%和88.2%±0.27%。激光共聚焦图像表明水解酸化池和接触氧化池的生物活性较高,有利于微生物对废水中的污染物进行降解。Through the combination of physical and chemical pretreatment and hydrolysis acidification-contact oxidation process,the pollutants removal efficiencies of auto parts wastewater and the biological activity of microorganisms were studied.The results showed that the best combination of physical and chemical pretreatment processes in the auto parts wastewater treatment was:pH=9.97,PAM=2.67 mg/L,PAC=1.59 g/L,and the highest COD removal efficiency under the best combination was 80.0%.For the wastewater after physical and chemical pretreatment,followed by the hydrolysis acidification-contact oxidation process,the removal rates of the main pollutants BOD5 and COD were as high as 92.7%±0.53%and 88.2%±0.27%,respectively with 10 h of HRT and 2~3 mg/L of DO.The laser confocal image showed that the biological activity of the hydrolysis acidification tank and the contact oxidation tank was high,which was conducive to the degradation of pollutants in wastewater by microorganisms.

关 键 词：水解酸化 接触氧化 混凝沉淀 汽车配件废水 

分 类 号：X703.1[环境科学与工程—环境工程]