催化湿式氧化预处理H酸生产废水
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摘要
采用催化湿式空气氧化-生物接触氧化组合工艺处理H酸生产废水,经小试考察,确定催化湿式氧化最佳操作条件为:反应温度为260℃,反应压力为6.0 MPa,催化剂添加量为1 g/L。在上述条件下,H酸生产废水COD去除率>60%,脱色率>80%,催化湿式氧化预处理后废水生化可行性显著提高,经组合工艺处理有利于达标排放。
Catalytic wet air oxidation-biological contact oxidation combine process was employed to treat H-acid production wastewater.Based on a bench scale study,the optimum catalytic wet oxidation process conditions were as follows: reaction temperature 260 ℃,reaction pressure 6. 0 MPa,catalyst dosage 1 g/L. In the conditions,COD removal rate was higher than 60%,decolorization rate was higher than 80%. Biodegradability of wastewater pretreated by the process could be improved significantly,and the wastewater was favorable for discharge standards.
Catalytic wet air oxidation-biological contact oxidation combine process was employed to treat H-acid production wastewater.Based on a bench scale study,the optimum catalytic wet oxidation process conditions were as follows: reaction temperature 260 ℃,reaction pressure 6. 0 MPa,catalyst dosage 1 g/L. In the conditions,COD removal rate was higher than 60%,decolorization rate was higher than 80%. Biodegradability of wastewater pretreated by the process could be improved significantly,and the wastewater was favorable for discharge standards.
引文
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[3]刘瑛.H酸生产技术改进及市场需求[J].化工科技市场,2001,24(4):12-14,18.
[4]杨志林,董自斌,王开春,等.络合萃取法预处理H酸废水[J].环境科技,2015,28(6):44-47.
[5]刘晓霞,王家彩,宋明川.催化氧化-EGSB-接触氧化处理PVB废水工程实例[J].环境科技,2015,28(1):28-30,34.
[6]肖羽堂,李志花,许双双,等.p H对大孔弱碱性树脂吸附处理H酸废水的影响[J].工业水处理,2010,30(9):63-65.
[7]董振海,李利敏,闫海生,等.催化湿式氧化预处理造纸黑液[J].化工环保,2011,31(4):338-341.
[8]秦传高,崔瑞宇,高迎明,等.Cu-Mn-Fe催化湿式氧化苯酚废水的研究[J].化工技术与开发,2015,44(9):50-53.
[9]程迪,马文静,付丹丹,等.染料及中间体生产废水治理[J].染料与染色,2016,53(1):56-62.