旋转填充床中臭氧氧化处理兰炭废水生化出水  

Advanced treatment of semi-coking wastewater by ozonation in rotating packed bed

作　　者：常佳伟 樊金梦 王伟 赵磊 邵磊[1,2] CHANG Jiawei;FAN Jinmeng;WANG Wei;ZHAO Lei;SHAO Lei(State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China;Research Center of Ministry of Education for High Gravity Engineering and Technology,Beijing University of Chemical Technology,Beijing 100029,China;Beijing Water Business Doctor Co.Ltd.,Beijing 100875,China)

机构地区：[1]北京化工大学有机无机复合材料国家重点实验室,北京100029 [2]北京化工大学教育部超重力工程研究中心,北京100029 [3]北京万邦达环保技术股份有限公司,北京100875

出　　处：《化工环保》2020年第2期131-136,共6页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金项目(21676008)。

摘　　要：以旋转填充床(RPB)为反应器,采用臭氧氧化工艺处理实际兰炭废水一级生化池出水。考察了臭氧浓度、RPB转速、气液比、初始废水pH、废水温度和RPB处理级数对废水处理效果和臭氧利用率的影响。实验得到的适宜工艺条件为:保持进气流量90 L/h不变,不调节废水pH和温度,控制臭氧质量浓度50 mg/L、气液比5∶1、RPB转速1500 r/min,进行二级处理。在上述工艺条件下,处理COD为340.0 mg/L、BOD5/COD为0.18、pH为7.77、温度为24.7℃的废水,处理后出水COD去除率为19.7%,BOD5/COD为0.34,可生化性大幅提高,可满足后续生化处理要求。The effluent of the primary biochemical pool of actual semi-coking wastewater was treated by ozonation process in a rotating packed bed(RPB)reactor.The effects of ozone concentration,RPB rotation speed,gas-liquid ratio,initial wastewater pH,wastewater temperature and treatment stage of RPB on wastewater treatment and ozone utilization efficiency were investigated.The suitable processing conditions for secondary treatment were determined as follows:controlling the ozone mass concentration of 50 mg/L,the gas-liquid ratio of 5∶1 and RPB rotation speed of 1500 r/min,while maintaining the gas flow rate at 90 L/h and not adjusting wastewater pH and temperature.After the wastewater with COD of 340.0 mg/L,BOD5/COD of 0.18,pH of 7.77 and temperature of 24.7℃was treated under the above conditions,the COD removal rate reached 19.7%and BOD5/COD increased to 0.34,indicating that the biodegradability of the wastewater was improved significantly and can meet the requirement of subsequent biochemical treatment.

关 键 词：兰炭废水 旋转填充床 臭氧 COD BOD5/COD 

分 类 号：X703[环境科学与工程—环境工程]