集成电路工业尾水深度处理中试研究
|
摘要
深圳市某集成电路工业尾水中有机物浓度低,氨氮、硝态氮、总氮浓度高,BOD5/COD低于0.3,C/N低于1.3,属于低C/N难生物降解废水。现应用生态-A/O生物接触氧化复合系统对该尾水进行中试规模强化生物深度处理。经研究表明,C/N为2.0,HRT为12.4 h是反应系统最佳操作参数,此条件下系统运行60 d后,COD、氨氮、总氮去除率分别为82.7%、84.3%、65.9%,当中COD、总氮去除率比现有实际深度处理工程出水分别高10%、45%左右,反应系统水生植物茎叶葱绿,植物根系和生物填料微生物挂膜情况良好,微生物量较大。
The tail water in an integrated circuit industrial wastewater treatment plant, Shenzhen, China, contains low-concentration organic matter,high-concentration of ammonia nitrogen,nitrate nitrogen,and total ammonia,and the BOD5/COD is lower than 0.3, and C/N lower than 1.3. The tail water falls into low C/N refractory biodegraded wastewater. The pilot scale enhanced biological advanced treatment of the tail water has been accomplished by the combined system, ecological-A/O biological contact oxidation. The results from the research show that the optimal operation parameters of the reaction system are as follows,C/N is 2.0 and HRT 12.4 h. Under these conditions, and after the system runs for 60 days, the removing rates of COD,ammonia and total nitrogen(TN) can reach 82.7%,84.3% and65.9%,respectively. The removing rates of COD and TN are 10% and 45%, respectively, higher than that of the effluent from the present actual and advanced treatment project. The aquatic plants in the reaction system grow well,the membrane forming mode of plant root system and biological filler microbes are good, and the quantity of microbes are large.
The tail water in an integrated circuit industrial wastewater treatment plant, Shenzhen, China, contains low-concentration organic matter,high-concentration of ammonia nitrogen,nitrate nitrogen,and total ammonia,and the BOD5/COD is lower than 0.3, and C/N lower than 1.3. The tail water falls into low C/N refractory biodegraded wastewater. The pilot scale enhanced biological advanced treatment of the tail water has been accomplished by the combined system, ecological-A/O biological contact oxidation. The results from the research show that the optimal operation parameters of the reaction system are as follows,C/N is 2.0 and HRT 12.4 h. Under these conditions, and after the system runs for 60 days, the removing rates of COD,ammonia and total nitrogen(TN) can reach 82.7%,84.3% and65.9%,respectively. The removing rates of COD and TN are 10% and 45%, respectively, higher than that of the effluent from the present actual and advanced treatment project. The aquatic plants in the reaction system grow well,the membrane forming mode of plant root system and biological filler microbes are good, and the quantity of microbes are large.
引文
[1]刘宇斌,汪晓军,黄志聪,等. BAF深度处理PCB废水的实验研究[J].工业水处理,2012,32(5):18-20.
[2]游震中,魏江洲,丁扣林.印制板废水处理工艺简析[J].印制电路信息,2003(3):52-54.
[3]林衍,汤红花,欧阳嘉,等.人工湿地技术用于重庆市村镇生活污水处理现状[J].环境工程,2016,34(4):29-32.
[4]赵薇,张艳桥.人工湿地在雨水处理与湖泊水质改善中的应用研究[J].环境保护科学,2010,36(1):24-27.
[5]陈晓东,张帆,张华,等.新型复合流人工湿地处理食品加工废水的探索[J].环境科学与技术,2016,39(5):28-31.
[6] Wang T,Zhang H M,Yang F L,et al. Start-up and long-term operation of the Anammox process in a fixed bed reactor(FBR)filled with novel non-woven ring carriers[J]. Chemosphere,2013,91(5):669-675.
[7]刘雯,丘锦荣,卫泽斌,等.植物-生物膜氧化沟处理生活污水的中试研究[J].中国给水排水,2009,25(15):8-11.
[8] Hong J M,Hua M M,Sun R,et al. Unraveling characteristics of nutrient removal and microbial community in a novel aerated landscape-activated sludge ecological system[J]. Bioresource Technology,2016,212:280-288.
[9]方雨. BFBR立体生态处理技术在市政污水处理厂改造工程中的应用[J].中国高新技术企业,2017(10):117-118.
[2]游震中,魏江洲,丁扣林.印制板废水处理工艺简析[J].印制电路信息,2003(3):52-54.
[3]林衍,汤红花,欧阳嘉,等.人工湿地技术用于重庆市村镇生活污水处理现状[J].环境工程,2016,34(4):29-32.
[4]赵薇,张艳桥.人工湿地在雨水处理与湖泊水质改善中的应用研究[J].环境保护科学,2010,36(1):24-27.
[5]陈晓东,张帆,张华,等.新型复合流人工湿地处理食品加工废水的探索[J].环境科学与技术,2016,39(5):28-31.
[6] Wang T,Zhang H M,Yang F L,et al. Start-up and long-term operation of the Anammox process in a fixed bed reactor(FBR)filled with novel non-woven ring carriers[J]. Chemosphere,2013,91(5):669-675.
[7]刘雯,丘锦荣,卫泽斌,等.植物-生物膜氧化沟处理生活污水的中试研究[J].中国给水排水,2009,25(15):8-11.
[8] Hong J M,Hua M M,Sun R,et al. Unraveling characteristics of nutrient removal and microbial community in a novel aerated landscape-activated sludge ecological system[J]. Bioresource Technology,2016,212:280-288.
[9]方雨. BFBR立体生态处理技术在市政污水处理厂改造工程中的应用[J].中国高新技术企业,2017(10):117-118.